Asking help from within audacity triggers Firefox to open files it can't show although they are there :

No such file

Firefox can’t find the file at /usr/share/audacity/help/manual/man/devices_preferences.html.

Check filename syntax (whose upper/lowercase); Check file was not moved, rename or deleted. Vérifiez la syntaxe du nom de fichier (dont le respect des minuscules/majuscules) ;  
Vérifiez si le fichier n’a pas été déplacé, renommé ou supprimé.

Please what can I do to open these files? Replacing Firefox snap by apt does not seem to be the solution since Ubuntu forced (or at least highly recommanded) migration to snap.

Thank you

When I first logged in today my secondary monitor, which is in portrait mode, was forced into landscape mode but with the portrait parameters preserved; just scaled into landscape. This resulted in a squished and unusable screen.

Rotating to landscape through the settings in the GUI made it normal (but sideways) and rotating it back resulted in the same squished output.

I attempted to use kscreen-doctor output.2.rotation.right to rotate it, but that rotated my main screen into the same squished output. Rotating it back didn't fix it, just made it squished in a different way.

I found this old thread on the Gentoo forums where I found:

However, I do run three monitors, and occasionally I've had System Settings-->Display And Monitor-->Display Configuration go totally bonkers. In those cases deleting the files in .kde4/share/apps/kscreen and then logging back in seems to restore sanity and allows me to reconfigure my multi-monitor setup correctly.

However, I cannot find those files so perhaps those have moved in the decade since that was posted... where might I find them now, or similar files I can delete that will be restored at log-in?

Thanks.

Here are some pictures if my words are sub-par:

Both show the main screen as borked, but the first picture is what the secondary monitor looked like at startup and the second picture is what it looked like after I rotated it to landscape.

Here is a link to the bug I submitted to kde.

Initially I successfully installed Chrome Remote Desktop on my Ubuntu device and on my first remote connection, I realized that it was connecting to a new session, while blocking the local user to connect.

I tried to follow several recommendations in order to setup the application correctly, but no luck on that.

Anybody knows how to properly set it up?

I know it has been asked a few times already, but the solutions I found don't seem to work. A few months ago my computer (ThinkPad T14 Gen 2, running Ubuntu 24.04 iirc) crashed or something when booting and then nothing was the same. I had no more sound, Bluetooth and microphone. Through reinstalling stuff I managed to get the Bluetooth and sound back. Today, in an attempt to fix this, I clean reinstalled the whole OS, which did nothing.

I then saw a solution online saying to update the BIOS. I went to the webpage here where I got the latest version (1.69) of the BIOS. Then I flashed it on a fat32 USB thumb drive, booted and tried installing it, but to no avail. The BIOS update failed, and I got this error message: "The process does not recognize this system". I tried to find a solution, on this page on which someone recommended using a few tweaks to get it on fat16. I tried again, but to no avail.

I think updating my BIOS is really supposed to fix the problem, but I don't seem to be able to update it. I don't understand why as I'm not very used to doing this.

I am a new Ubuntu user transitioning from Windows, and I am currently struggling with a hurdle in my learning journey. While I have managed to get comfortable with basic sudo commands in the terminal, I cannot get Ubuntu to automatically recognize or display external media. When I plug in an external drive or SD card to transfer files from my old PC, no media pop-up appears, and nothing shows up in the Dock or in the Files app.

Interestingly the devices are visible in the terminal when I run lsblk, but imaging tools like balenaEtcher and Raspberry Pi Imager also fail to see the storage.

My goal is to archive my old files into new Ubuntu folders, but I am currently blocked by this lack of media access. I feel like I might be missing a basic "handshake" or some setting that requires activation is not activated. Can someone please point me in the right direction to get my external storage devices recognized in the GUI?

Since I upgraded to 6.8.0-1047, I’ve been experiencing persistent networking issues. Sometimes it works, sometimes it doesn’t, and it’s getting really frustrating. What’s the best way to fix this, or how can I downgrade to an earlier version?

Here’s some context from my system:

Welcome to Ubuntu 24.04.3 LTS (GNU/Linux 6.8.0-1047-raspi aarch64)
 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/pro
System information as of Tue Feb 10 12:53:58 EET 2026
 System load:  0.0                 Temperature:  67.8 C
 Usage of /:   17.2% of 469.12GB   Processes:    192
 Memory usage: 48%                 Users logged in: 1
 Swap usage:   0%                  IPv4 address for eth0: 192.168.3.2
This power supply is not capable of supplying 5A; power to peripherals
will be restricted
Failed to connect to https://changelogs.ubuntu.com/meta-release-lts. 
Check your Internet connection or proxy settings

I need to remove the directory /lib/modules/6.17.0-14-generic after a failed kernel installation. I initially tried sudo apt autoremove --purge which returned

warning: while removing linux-modules-6.17.0-14-generic, directory '/lib/modules/6.17.0-14-generic' not empty so not removed

Next, I tried apt purge linux-modules-6.17.0-14-generic which returned

Package 'linux-modules-6.17.0-14-generic' is not installed, so not removed  

How can I remove this directory properly?

I recently followed a guide on here that allowed me to install Ubuntu 24.04 lts on USB that was compatible with BIOS and UEFI. I have tested in on all of my computers and they all work great so far, except for my ARM based one, which of course won't work with this version of Ubuntu. I think it would be cool to also put windows 7 or 10 or something on a partition, but this may be beyond the scope of this project for me.

My question is, without ruining my partitions, how can I add other OS's to my USB stick that wont ruin my so far ultra compatible Ubuntu USB installation. I attached a link to the forum post on here that walked me through the first installation, as well as another post from the same user who detailed an older method for multiboot installation (see bottom of that post), but I think it may be out of date.

Current single boot method

Older multiboot method

Edit:

Thank you to karel for responding, basically I had to to set up my paritions in a very specific way according to those post to allow for booting with BIOS and UEFI. I am aware of tools to create multiboot usb drives, but if I use that tool will it ruin the way I had to set up my USB to be compatible with BIOS and UEFI? Should I resize my ext4 to unformated space and then use the multi boot tool on that space? Sorry, I am relatively new to live usbs and this project may be a bit advanced for me.

After upgrading the Linux kernel on Ubuntu (via sudo apt upgrade) to a newer version (in my case 6.17.0-14-generic), Wi-Fi stopped working. The laptop uses an Intel Wi-Fi 6E AX211 adapter with the iwlwifi driver. The device was detected by PCI tools, but the Wi-Fi interface was not usable and the device showed as UNCLAIMED in lshw.

Hardware / detection output:

aeart@aeart-ThinkBook-16-G8-IAL:~$ lspci | grep -i network
00:14.3 Network controller: Intel Corporation Device 7740
aeart@aeart-ThinkBook-16-G8-IAL:~$ lspci -knn | grep -iA2 net
00:14.3 Network controller [0280]: Intel Corporation Device [8086:7740]
 Subsystem: Intel Corporation Device [8086:0094]
 Kernel modules: iwlwifi
--
00:1f.6 Ethernet controller [0200]: Intel Corporation Device [8086:57a1]
 DeviceName: To Be Filled by O.E.M.
 Subsystem: Lenovo Device [17aa:3802]
aeart@aeart-ThinkBook-16-G8-IAL:~$ sudo lshw -class network
[sudo] password for aeart: 
  *-network:0 UNCLAIMED     
       description: Network controller
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix cap_list
       configuration: latency=0
       resources: iomemory:480-47f memory:48192c4000-48192c7fff
  *-network:1
       description: Ethernet interface
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 1f.6
       bus info: pci@0000:00:1f.6
       logical name: eno0
       version: 00
       serial: 84:ba:59:b6:c2:cc
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=6.17.0-14-generic firmware=0.1-4 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:146 memory:98200000-9821ffff
  *-network
       description: Ethernet interface
       physical id: 12
       bus info: usb@3:3
       logical name: enx6a1febda5995
       serial: 6a:1f:eb:da:59:95
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=rndis_host driverversion=6.17.0-14-generic firmware=RNDIS device ip=192.168.5.60 link=yes multicast=yes port=twisted pair

Kernel log / error: dmesg showed firmware load failures and the driver explicitly said that the required firmware versions were missing:

aeart@aeart-ThinkBook-16-G8-IAL:~$ sudo dmesg | grep iwlwifi
[sudo] password for aeart: 
[    2.462594] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
[    2.515914] iwlwifi 0000:00:14.3: Detected crf-id 0x400410, cnv-id 0x80930 wfpm id 0x80005b20
[    2.515930] iwlwifi 0000:00:14.3: PCI dev 7740/0094, rev=0x461, rfid=0x2010d000
[    2.515935] iwlwifi 0000:00:14.3: Detected Intel(R) Wi-Fi 6E AX211 160MHz
[    2.516006] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-bz-b0-gf-a0-100.ucode failed with error -2
[    2.516195] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-bz-b0-gf-a0-99.ucode failed with error -2
[    2.516231] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-bz-b0-gf-a0-98.ucode failed with error -2
[    2.516233] iwlwifi 0000:00:14.3: no suitable firmware found!
[    2.516238] iwlwifi 0000:00:14.3: minimum version required: iwlwifi-bz-b0-gf-a0-98
[    2.516241] iwlwifi 0000:00:14.3: maximum version supported: iwlwifi-bz-b0-gf-a0-100
[    2.516243] iwlwifi 0000:00:14.3: check git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git

I recently installed Ubuntu 24.04 LTS on my physical machine and successfully logged into the system. However, I am experiencing a strange issue with my keyboard, and I need help troubleshooting it.

Problem Details:

Initially, the keyboard worked perfectly after the installation. After some time of usage, the keyboard suddenly stopped responding completely. None of the keys seemed to register any input. While troubleshooting, I started pressing random keys on the keyboard, and I noticed that:

• Some keys eventually registered in a text editor or terminal, but it was extremely slow.
• The input was intermittent and random — not all keys were recorded, and there was a noticeable delay in response time.

Troubleshooting Steps I Have Tried So Far:

• I checked whether the keyboard was physically connected properly (USB port in this case) and even tried using different USB ports.
• I tested the keyboard on another machine, and it works without any issues, so the hardware seems fine.
• I restarted the machine, but the issue persists.
• I tried plugging in another external keyboard, but it showed the same behavior.
• I verified that the issue is not related to Num Lock or keyboard layout settings in the OS.

Environment Details:

• OS: Ubuntu 24.04 LTS (64-bit) installed on a physical machine
• Keyboard: USB wired keyboard

Additional Observations:

• The keyboard issue seems to occur randomly and not immediately after booting the machine.
• Mouse input and other peripherals are functioning normally.

Questions:

• Has anyone faced a similar issue with Ubuntu 24.04 LTS or other versions?
• Could this be related to a software bug, driver issue, or some background process interfering with the keyboard input?
• Are there specific log files I should check to diagnose this issue (e.g., system logs or kernel logs)?
• Would updating the kernel or reinstalling Ubuntu help, or is there a workaround to fix this without reinstalling?
• Are there any specific packages or drivers I need to install to ensure proper keyboard functionality?

I would greatly appreciate any guidance or suggestions to resolve this problem.

Thank you in advance!

I am using Ubuntu 22.04. My PC got stopped while updating. Now whenever I am giving the command sudo apt upgrade I am getting the below-mentioned error. I can not even open the GUI-based software update. Can anyone please suggest what to do?

Reading package lists... Done

Building dependency tree... Done
Reading state information... Done
E: The package linux-hwe-5.19-headers-5.19.0-35 needs to be reinstalled, but I can't find an archive for it.

Results of sudo apt update:

pamir@pamir:~$ sudo apt update
Hit:1 [http://cz.archive.ubuntu.com/ubuntu](http://cz.archive.ubuntu.com/ubuntu) jammy InRelease
Hit:2 [http://cz.archive.ubuntu.com/ubuntu](http://cz.archive.ubuntu.com/ubuntu) jammy-updates InRelease
Get:3 [http://cz.archive.ubuntu.com/ubuntu](http://cz.archive.ubuntu.com/ubuntu) jammy-backports InRelease [107 kB]
Get:4 [http://apt.insync.io/ubuntu](http://apt.insync.io/ubuntu) jammy InRelease [5,535 B]
Hit:5 [https://dl.google.com/linux/chrome/deb](https://dl.google.com/linux/chrome/deb) stable InRelease
Hit:6 [https://ppa.launchpadcontent.net/bitseater/ppa/ubuntu](https://ppa.launchpadcontent.net/bitseater/ppa/ubuntu) jammy InRelease
Hit:7 [http://security.ubuntu.com/ubuntu](http://security.ubuntu.com/ubuntu) jammy-security InRelease
Hit:8 [https://esm.ubuntu.com/apps/ubuntu](https://esm.ubuntu.com/apps/ubuntu) jammy-apps-security InRelease
Hit:9 [https://esm.ubuntu.com/apps/ubuntu](https://esm.ubuntu.com/apps/ubuntu) jammy-apps-updates InRelease
Get:10 [https://esm.ubuntu.com/infra/ubuntu](https://esm.ubuntu.com/infra/ubuntu) jammy-infra-security InRelease [7,453 B]
Get:11 [https://esm.ubuntu.com/infra/ubuntu](https://esm.ubuntu.com/infra/ubuntu) jammy-infra-updates InRelease [7,452 B]
Fetched 127 kB in 2s (70.4 kB/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
32 packages can be upgraded. Run 'apt list --upgradable' to see them.
pamir@pamir:~$ sudo apt upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
   E: The package linux-hwe-5.19-headers-5.19.0-35 needs to be reinstalled, but I can't find an archive for it.
pamir@pamir:~$ █

First of all, I'm not an experienced user so please be as clear as possible in all answers. I recently installed Ubuntu 22.04 on a new HP Victus laptop (This one except with Intel Core i7-12700H and GeForce RTX 3050 Ti). The wifi was working fine. I was not messing with any settings, it just suddenly disconnected and now it says "no wifi adapter found" in settings. I have already tried some solutions from similar questions but nothing works. I'm now online using a tethered android phone.

The wifi adapter does not show up using 'sudo lshw -C network':

  *-network                 
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:06:00.0
       logical name: eno1
       version: 16
       serial: a8:b1:3b:92:0a:eb
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.19.0-32-generic firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:19 ioport:3000(size=256) memory:82204000-82204fff memory:82200000-82203fff
  *-network
       description: Ethernet interface
       physical id: 12
       bus info: usb@3:3
       logical name: enx1e31043ced9f
       serial: 1e:31:04:3c:ed:9f
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=rndis_host driverversion=5.19.0-32-generic duplex=half firmware=RNDIS device ip=192.168.16.27 link=yes multicast=yes port=twisted pair

I ran a wireless-info script i found. The output is here.

sudo dmesg | grep iwl gives:

[    1.482435] Loading modules backported from iwlwifi
[    1.482436] iwlwifi-stack-public:master:10878:f4df8641

rfkill list gives:

0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

iwconfig gives:

lo        no wireless extensions.

eno1      no wireless extensions.

enx1e31043ced9f  no wireless extensions.

I hope I haven't messed things up even further trying things from other questions without knowing exactly what I was doing (there are so many, i've lost track of everything I've done). I will use this computer for studying and I've spent a lot of time setting up all the software I will need, CUDA for molecular dynamics simulations and onedrive etc. So I would really like to avoid a fresh install if possible. Thank you in advance for your help.

I'm getting this error when I use the command vulkaninfo ,im using Nvidia-driver-460 on Ubuntu 18.04

WARNING: [Loader Message] Code 0 : loader_icd_scan: Can not find 'ICD' object in ICD JSON file /usr/share/vulkan/icd.d/nvidia_layers.json.  Skipping ICD JSON
ERROR: [Loader Message] Code 0 : loader_scanned_icd_add: Could not get 'vkCreateInstance' via 'vk_icdGetInstanceProcAddr' for ICD libGLX_nvidia.so.0
ERROR: [Loader Message] Code 0 : /usr/lib/i386-linux-gnu/libvulkan_radeon.so: wrong ELF class: ELFCLASS32
ERROR: [Loader Message] Code 0 : /usr/lib/i386-linux-gnu/libvulkan_intel.so: wrong ELF class: ELFCLASS32
'DISPLAY' environment variable not set... skipping surface info
/build/vulkan-tools-136mCR/vulkan-tools-1.1.126.0+dfsg1/vulkaninfo/vulkaninfo.h:399: failed with ERROR_INITIALIZATION_FAILED

I have installed qemu/kvm on ubuntu 20.04 latest, and would like to manage the guests remotely with virt-manager.

I can successfully make a connection with: virt-manager -c 'qemu+ssh://myqemuuser1@myip:myport/system?keyfile=XX_PATH_TO_PRIV_KEY_XX'

and see all the guests, and can configure them. However, when trying to open the display of a guest (VNC, or spice), I get:

SSH tunnel error output: USERNAME@IP: Permission denied (publickey).

when changing the sshd_config to allow password-based authentication, all works well again (VNC asks me 1 time for a password, spice ~8 times, but I know about that).

VNC is configured as "localhost only" and Port "auto".

BTW: If I change this to "listen to all interfaces", I get a "guest disconnected" after some time (instead of the SSH tunnel error output: USERNAME@IP: Permission denied (publickey).)

/var/log/auth.log shows:

sshd[10383]: Connection closed by authenticating user myqemuuser1 XmyipX port XmyportX [preauth]

there is no error shown in /var/log/syslog, and none in the guest logs in /var/log/libvirt/qemu/XXguestXX.log

I found a solution for proxmox about double-checking the format of keys in authorized_keys:

https://forum.proxmox.com/threads/connection-closed-by-ip-port-xxxx-preauth.46734/

So I double-checked the format of the file, and it looks normal to me (keypair created with ssh-keygen -b 4096 -t rsa -f "/home/mylocaluser/.ssh/id_rsa_SERVERNAME"):

ssh-rsa A....public-key-data...w== myqemuuser1@IP

I also made sure it is read-accessible by any user (other) all the way to /home/xxx/.ssh/authorized_keys

I also copied it to /root/.ssh/authorized_keys, yet the same error.

It seems the error message "Permission denied" is pretty correct, so probably for VNC/spice I have to copy the public key somewhere else, or make a symlink? I didn't find anything using google ...

my changes of /etc/ssh/sshd_config from the default are:

Port XcustomX
PermitRootLogin no
ChallengeResponseAuthentication no
PubkeyAuthentication yes
PasswordAuthentication no
PermitEmptyPasswords no

(I tried virt-viewer along the way as well, but this didn't work either)

I had a look at the virt-manager debug log at ~/.cache/virt-manager/virt-manager.log:

1. working (password authentication enabled):

[Do, 03 Dez 2020 10:53:27 virt-manager 262723] DEBUG (xmleditor:12) Using GtkSource 4
[Do, 03 Dez 2020 10:53:27 virt-manager 262723] DEBUG (serialcon:17) Using VTE API 2.91
[Do, 03 Dez 2020 10:53:28 virt-manager 262723] DEBUG (vmwindow:177) Showing VM details: <vmmDomain name=XguestnameX id=0x7fcf510bc3c0>
[Do, 03 Dez 2020 10:53:28 virt-manager 262723] DEBUG (engine:391) window counter incremented to 2
[Do, 03 Dez 2020 10:53:28 virt-manager 262723] DEBUG (console:715) Starting connect process for proto=vnc trans=ssh connhost=XqemuIPX connuser=XqemuUserX connport=XsshportX gaddr=127.0.0.1 gport=5900 gtlsport=None gsocket=None
[Do, 03 Dez 2020 10:53:28 virt-manager 262723] DEBUG (sshtunnels:253) Pre-generated ssh command for ginfo: ssh -p XsshportX -l XqemuUserX XqemuIPX sh -c 'nc -q 2>&1 | grep "requires an argument" >/dev/null;if [ $? -eq 0 ] ; then   CMD="nc -q 0 127.0.0.1 5900";else   CMD="nc 127.0.0.1 5900";fi;eval "$CMD";'
[Do, 03 Dez 2020 10:53:28 virt-manager 262723] DEBUG (sshtunnels:277) Generated tunnel fd=20 for viewer
[Do, 03 Dez 2020 10:53:28 virt-manager 262723] DEBUG (sshtunnels:201) Opened tunnel PID=262803 ERRFD=18
[Do, 03 Dez 2020 10:53:35 virt-manager 262723] DEBUG (console:838) Viewer connected

There is not a single google search result with some of the keywords ... and I think the only thing missing is some permissions/symlink to the public key on the server-side for VNC/spice to access?

2. not working (authentication only with public key):

[Do, 03 Dez 2020 10:44:12 virt-manager 260859] DEBUG (xmleditor:12) Using GtkSource 4
[Do, 03 Dez 2020 10:44:12 virt-manager 260859] DEBUG (serialcon:17) Using VTE API 2.91
[Do, 03 Dez 2020 10:44:14 virt-manager 260859] DEBUG (vmwindow:177) Showing VM details: <vmmDomain name=XguestnameX id=0x7ffb1a0f71c0>
[Do, 03 Dez 2020 10:44:14 virt-manager 260859] DEBUG (engine:391) window counter incremented to 2
[Do, 03 Dez 2020 10:44:14 virt-manager 260859] DEBUG (console:715) Starting connect process for proto=vnc trans=ssh connhost=XqemuIPX connuser=XqemuUserX connport=XsshportX gaddr=127.0.0.1 gport=5900 gtlsport=None gsocket=None
[Do, 03 Dez 2020 10:44:14 virt-manager 260859] DEBUG (sshtunnels:253) Pre-generated ssh command for ginfo: ssh -p XsshportX -l XqemuUserX XqemuIPX sh -c 'nc -q 2>&1 | grep "requires an argument" >/dev/null;if [ $? -eq 0 ] ; then   CMD="nc -q 0 127.0.0.1 5900";else   CMD="nc 127.0.0.1 5900";fi;eval "$CMD";'
[Do, 03 Dez 2020 10:44:14 virt-manager 260859] DEBUG (sshtunnels:277) Generated tunnel fd=20 for viewer
[Do, 03 Dez 2020 10:44:14 virt-manager 260859] DEBUG (sshtunnels:201) Opened tunnel PID=260956 ERRFD=18
[Do, 03 Dez 2020 10:44:14 virt-manager 260859] DEBUG (sshtunnels:154) Close tunnel PID=260956 ERRFD=18
[Do, 03 Dez 2020 10:44:14 virt-manager 260859] DEBUG (console:829) Viewer disconnected
[Do, 03 Dez 2020 10:44:14 virt-manager 260859] DEBUG (console:821) SSH tunnel error output: XqemuUserX@XqemuIPX: Permission denied (publickey).

Using an Ubuntu VM on VMWare. The internet just stopped working out of the blue and even experts don't know why.

Some stats:

sudo lshw -C network

*-network DISABLED        
       description: Ethernet interface
       product: 82545EM Gigabit Ethernet Controller (Copper)
       vendor: Intel Corporation
       physical id: 1
       bus info: pci@0000:02:01.0
       logical name: ens33
       version: 01
       serial: 00:0c:29:d7:ef:66
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 66MHz
       capabilities: pm pcix bus_master cap_list rom ethernet physical logical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000 driverversion=7.3.21-k8-NAPI duplex=full latency=0 link=no mingnt=255 multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:19 memory:fd5c0000-fd5dffff memory:fdff0000-fdffffff ioport:2000(size=64) memory:fd500000-fd50ffff

Tried this , this and this (from this forum)

Can't find ifup and ifdown commands installed

Settings app:

I also reset the network settings on my VMWare but that was of no help.

It is very urgent and I would be grateful for any help!

My system:

Laptop Dell inspiron 15 3000
RAM: 16 GB
SSD 480 GB Kingston
Intel Core i3 7th Generation
OS: Ubuntu 18.04.4 with Software and System Updates
Web Browser: Mozilla Firefox, Google Chrome, Palemoon. All latest.
Terminal emulator: Yakuake, gnome-terminal.
Other Terminal: TTY1
Internet service provider connection speed: 100 Mbps (asymmetric)
Full upgrade: march 23, 2020

The problem

Just recently noticed that my mkv videos stopped working just after a system upgrade. That's why I requested help here: Error on videos (.mkv) after software upgrade. And the problem was partially solved.

Nevertheless I didn't notice that some other video overlay functions stopped working, like the overlay video which is used by AnyDesk to create the remote control session. Please see this screenshot.

Edit

Just entered the Ubuntu default desktop environment, and I noticed some weird green color artifacts on the desktop, which won't render on the top of the windows, just on the desktop.

Can somebody please help me to revert or fix the problem the upgrade created?

If you need further information please let me know. I don't know where to start the investigation and what I would do is to reinstall everything. But I would prefer not to.

Thanks in advance.

I have a HP Notebook-15-ac603tu. After switching to Ubuntu from Windows, the camera stopped working.

I have run the following commands with output:

• lsusb :

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 042: ID 0bda:57d6 Realtek Semiconductor Corp. 
Bus 001 Device 003: ID 0bda:b006 Realtek Semiconductor Corp. 
Bus 001 Device 002: ID 25a7:fa23  
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

• v4l2-ctl --list-devices :

HP Truevision HD: HP Truevision (usb-0000:00:14.0-5):
    /dev/video0

• ls -ltr /dev/video* :

crw-rw----+ 1 root video 81, 0 Mar 22 11:59 /dev/video0

• cheese :

(cheese:6397): Gtk-WARNING **: 12:11:18.227: Theme parsing error: cheese.css:7:35: The style property GtkScrollbar:min-slider-length is deprecated and shouldn't be used anymore. It will be removed in a future version

** (cheese:6397): CRITICAL **: 12:11:18.789: cheese_preferences_dialog_on_source_change: assertion '_tmp2_ > ((guint) 0)' failed

(cheese:6397): cheese-CRITICAL **: 12:11:18.789: cheese_camera_device_get_name: assertion 'CHEESE_IS_CAMERA_DEVICE (device)' failed

(cheese:6397): GLib-CRITICAL **: 12:11:18.790: g_variant_new_string: assertion 'string != NULL' failed

(cheese:6397): GLib-CRITICAL **: 12:11:18.790: g_variant_ref_sink: assertion 'value != NULL' failed

(cheese:6397): GLib-GIO-CRITICAL **: 12:11:18.790: g_settings_schema_key_type_check: assertion 'value != NULL' failed

(cheese:6397): GLib-CRITICAL **: 12:11:18.790: g_variant_get_type_string: assertion 'value != NULL' failed

(cheese:6397): GLib-GIO-CRITICAL **: 12:11:18.790: g_settings_set_value: key 'camera' in 'org.gnome.Cheese' expects type 's', but a GVariant of type '(null)' was given

(cheese:6397): GLib-CRITICAL **: 12:11:18.791: g_variant_unref: assertion 'value != NULL' failed

** (cheese:6397): CRITICAL **: 12:11:18.791: cheese_preferences_dialog_setup_resolutions_for_device: assertion 'device != NULL' failed

** (cheese:6397): CRITICAL **: 12:11:20.317: cheese_preferences_dialog_on_source_change: assertion '_tmp2_ > ((guint) 0)' failed

(cheese:6397): cheese-CRITICAL **: 12:11:20.318: cheese_camera_device_get_name: assertion 'CHEESE_IS_CAMERA_DEVICE (device)' failed

Cheese is displaying a black screen.

I tried almost everything, and I don't know how to proceed further. Please help me to work with my webcam.

Bluetooth stopped working in Ubuntu 19.10. I tried to enable it in the Settings app, but nothing happened.

GNOME Settings:

When I try to turn it on using bluetoothctl, nothing comes out of the console either.

andrei@HP-Laptop-15:~$ bluetoothctl
Agent registered
[bluetooth]# block
Missing device address argument
[bluetooth]# list
[bluetooth]# devices
No default controller available
[bluetooth]# version
Version 5.50
[bluetooth]# 

Results of hcitool scan:

andrei@HP-Laptop-15:~$ hcitool scan 
Device is not available: No such device
andrei@HP-Laptop-15:~$ hcitool -i dev
Invalid device: No such device
andrei@HP-Laptop-15:~$ 

Results of rfkill list:

andrei@HP-Laptop-15:~$ rfkill list 
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
3: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

The most interesting thing is that in Ubuntu 19.04 everything worked perfectly.

My device: HP 15-db0229ur

Upon invoking emacs, it report errrors:

Fontconfig error: "/etc/fonts/conf.d/90-synthetic.conf", line 6: invalid attribute 'version'
Fontconfig error: Cannot load config file from /etc/fonts/fonts.conf

Consult with the answer at Fontconfig error: cannot load default config file.

me@alpha:~:
$ echo $FONTCONFIG_PATH
/etc/fonts

Unfortunately, it still does not work.

How could solve the problem?

I'm trying to run an Qtstalker installed on schroot. Steps described here: How do I install Qtstalker on Ubuntu 17.10?

When I come to the last step schroot -c precise env DISPLAY=:0.0 qtstalker I get the error:

qtstalker: error while loading shared libraries: libqt-mt.so.3: cannot open shared object file: No such file or directory

I tried going to root schroot -c precise -u root, then tried sudo apt-get install qt3 as well as sudo apt-get install libqt-mt

Gettin the error

Unable to locate package libqt-mt

I had already added lists to sources.list in chroot as outlined in that solution.

deb http://archive.ubuntu.com/ubuntu precise main universe multiverse
deb http://security.ubuntu.com/ubuntu precise-security main restricted universe multiverse

@N0rbert

UPDATE. Downloaded https://launchpad.net/ubuntu/precise/amd64/libqt3-mt/3:3.3.8-b-8ubuntu3 and started installing on schroot with dependency and as well as debconf errors.. It even tries to remove libqt3-mt (see Bold markups please)

Any thoughts? Thanks very much again.

dpkg -i --force-all libqt3*.deb

dpkg: libqt3-mt: dependency problems, but configuring anyway as you requested: libqt3-mt depends on libaudio2; however: Package libaudio2 is not installed. libqt3-mt depends on libfontconfig1 (>= 2.8.0); however: Package libfontconfig1 is not installed. libqt3-mt depends on libfreetype6 (>= 2.2.1); however: Package libfreetype6 is not installed. libqt3-mt depends on libice6 (>= 1:1.0.0); however: Package libice6 is not installed. libqt3-mt depends on libjpeg8 (>= 8c); however: Package libjpeg8 is not installed. libqt3-mt depends on libmng1 (>= 1.0.10); however: Package libmng1 is not installed. libqt3-mt depends on libpng12-0 (>= 1.2.13-4); however: Package libpng12-0 is not installed. libqt3-mt depends on libsm6; however: Package libsm6 is not installed. libqt3-mt depends on libstdc++6 (>= 4.1.1); however: Package libstdc++6 is not installed. libqt3-mt depends on libx11-6; however: Package libx11-6 is not installed. libqt3-mt depends on libxcursor1 (>> 1.1.2); however: Package libxcursor1 is not installed. libqt3-mt depends on libxext6; however: Package libxext6 is not installed. libqt3-mt depends on libxft2 (>> 2.1.1); however: Package libxft2 is not installed. libqt3-mt depends on libxi6; however: Package libxi6 is not installed. libqt3-mt depends on libxinerama1; however: Package libxinerama1 is not installed. libqt3-mt depends on libxrandr2; however: Package libxrandr2 is not installed. libqt3-mt depends on libxrender1; however: Package libxrender1 is not installed. libqt3-mt depends on fontconfig; however: Package fontconfig is not installed. Setting up libqt3-mt (3:3.3.8-b-8ubuntu3) ... Processing triggers for libc-bin ... ldconfig deferred processing now taking place

apt-get install -f  

Reading package lists... Done Building dependency tree
Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: apt-utils binutils:i386 cpp:i386 cpp-4.6:i386 debconf debconf-i18n debianutils dpkg fontconfig fontconfig-config gcc:i386 gcc-4.6:i386 libapt-inst1.4 libapt-pkg4.12 libaudio2:i386 libc-dev-bin libc6-dev:i386 libdb5.1 libdrm-intel1:i386 libdrm-nouveau1a:i386 libdrm-radeon1:i386 libdrm2:i386 libexpat1 libexpat1:i386 libffi6:i386 libfontconfig1 libfontconfig1:i386 libfreetype6 libfreetype6:i386 libgcc1 libgcc1:i386 libgl1-mesa-dri:i386 libgl1-mesa-glx:i386 libglapi-mesa:i386 libglu1-mesa:i386 libgmp10:i386 libgomp1:i386 libice6:i386 libjpeg-turbo8:i386 libjpeg8:i386 liblcms1:i386 libllvm3.0:i386 liblocale-gettext-perl libmng1:i386 libmpc2:i386 libmpfr4:i386 libpam-modules libpam-modules-bin libpam0g libpciaccess0:i386 libpng12-0:i386 libqt3-mt:i386 libquadmath0:i386 libsm6:i386 libstdc++6 libstdc++6:i386 libtext-charwidth-perl libtext-iconv-perl libtext-wrapi18n-perl libtinfo5 libuuid1 libuuid1:i386 libx11-6:i386 libx11-data libx11-xcb1:i386 libxau6:i386 libxcb-glx0:i386 libxcb1:i386 libxcursor1:i386 libxdamage1:i386 libxdmcp6:i386 libxext6:i386 libxfixes3:i386 libxft2:i386 libxi6:i386 libxinerama1:i386 libxmu6:i386 libxrandr2:i386 libxrender1:i386 libxt6:i386 libxxf86vm1:i386 linux-libc-dev:i386 lsb-base manpages manpages-dev ncurses-bin passwd perl-base sed sensible-utils ttf-dejavu-core tzdata ucf uuid-runtime x11-common Suggested packages: binutils-doc:i386 cpp-doc:i386 gcc-4.6-locales:i386 debconf-doc debconf-utils whiptail dialog gnome-utils libterm-readline-gnu-perl libgtk2-perl libnet-ldap-perl libqtgui4-perl libqtcore4-perl apt gcc-multilib:i386 make:i386 manpages-dev:i386 autoconf:i386 automake1.9:i386 libtool:i386 flex:i386 bison:i386 gdb:i386 gcc-doc:i386 gcc-4.6-multilib:i386 libmudflap0-4.6-dev:i386 gcc-4.6-doc:i386 libgcc1-dbg:i386 libgomp1-dbg:i386 libquadmath0-dbg:i386 libmudflap0-dbg:i386 binutils-gold:i386 nas:i386 glibc-doc:i386 libglide3:i386 liblcms-utils:i386 libpam-doc pciutils:i386 libqt3-mt-psql:i386 libqt3-mt-mysql:i386 libqt3-mt-odbc:i386 man-browser Recommended packages: uuid-runtime:i386 The following packages will be REMOVED: libqt3-mt The following NEW packages will be installed: apt-utils binutils:i386 cpp:i386 cpp-4.6:i386 debconf debconf-i18n debianutils dpkg fontconfig fontconfig-config gcc:i386 gcc-4.6:i386 libapt-inst1.4 libapt-pkg4.12 libaudio2:i386 libc-dev-bin libc6-dev:i386 libdb5.1 libdrm-intel1:i386 libdrm-nouveau1a:i386 libdrm-radeon1:i386 libdrm2:i386 libexpat1 libexpat1:i386 libffi6:i386 libfontconfig1 libfontconfig1:i386 libfreetype6 libfreetype6:i386 libgcc1 libgcc1:i386 libgl1-mesa-dri:i386 libgl1-mesa-glx:i386 libglapi-mesa:i386 libglu1-mesa:i386 libgmp10:i386 libgomp1:i386 libice6:i386 libjpeg-turbo8:i386 libjpeg8:i386 liblcms1:i386 libllvm3.0:i386 liblocale-gettext-perl libmng1:i386 libmpc2:i386 libmpfr4:i386 libpam-modules libpam-modules-bin libpam0g libpciaccess0:i386 libpng12-0:i386 libqt3-mt:i386 libquadmath0:i386 libsm6:i386 libstdc++6 libstdc++6:i386 libtext-charwidth-perl libtext-iconv-perl libtext-wrapi18n-perl libtinfo5 libuuid1 libuuid1:i386 libx11-6:i386 libx11-data libx11-xcb1:i386 libxau6:i386 libxcb-glx0:i386 libxcb1:i386 libxcursor1:i386 libxdamage1:i386 libxdmcp6:i386 libxext6:i386 libxfixes3:i386 libxft2:i386 libxi6:i386 libxinerama1:i386 libxmu6:i386 libxrandr2:i386 libxrender1:i386 libxt6:i386 libxxf86vm1:i386 linux-libc-dev:i386 lsb-base manpages manpages-dev ncurses-bin passwd perl-base sed sensible-utils ttf-dejavu-core tzdata ucf uuid-runtime x11-common 0 upgraded, 95 newly installed, 1 to remove and 0 not upgraded. 1 not fully installed or removed. Need to get 0 B/52.0 MB of archives. After this operation, 144 MB of additional disk space will be used. Do you want to continue [Y/n]? y E: Cannot get debconf version. Is debconf installed? debconf: apt-extracttemplates failed: No such file or directory Extracting templates from packages: 31%E: Cannot get debconf version. Is debconf installed? debconf: apt-extracttemplates failed: No such file or directory Extracting templates from packages: 63%E: Cannot get debconf version. Is debconf installed? debconf: apt-extracttemplates failed: No such file or directory Extracting templates from packages: 94%E: Cannot get debconf version. Is debconf installed? debconf: apt-extracttemplates failed: No such file or directory Extracting templates from packages: 100% dpkg: regarding .../dpkg_1.16.1.2ubuntu7.7_amd64.deb containing dpkg, pre-dependency problem: dpkg pre-depends on coreutils (>= 5.93-1) coreutils is unpacked, but has never been configured. dpkg: error processing /var/cache/apt/archives/dpkg_1.16.1.2ubuntu7.7_amd64.deb (--unpack): pre-dependency problem - not installing dpkg Errors were encountered while processing: /var/cache/apt/archives/dpkg_1.16.1.2ubuntu7.7_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1)

Tried the next in schroot:apt-get install libqt3-mt and got the below error again with dependencies.. Ubuntu suggested apt-get -f install did that and re-tried to install libqt3-mt; again the same error.

Reading package lists... Done Building dependency tree
Reading state information... Done libqt3-mt is already the newest version. You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: coreutils : Depends: dpkg (>= 1.15.4) or install-info libc6 : Depends: libgcc1 but it is not going to be installed Depends: tzdata but it is not going to be installed libc6:i386 : Depends: libgcc1:i386 but it is not going to be installed Depends: tzdata:i386 libqt3-mt : Depends: libaudio2 but it is not going to be installed Depends: libfontconfig1 (>= 2.8.0) but it is not going to be installed Depends: libfreetype6 (>= 2.2.1) but it is not going to be installed Depends: libice6 (>= 1:1.0.0) but it is not going to be installed Depends: libjpeg8 (>= 8c) but it is not going to be installed Depends: libmng1 (>= 1.0.10) but it is not going to be installed Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be installed Depends: libsm6 but it is not going to be installed Depends: libstdc++6 (>= 4.1.1) but it is not going to be installed Depends: libx11-6 but it is not going to be installed Depends: libxcursor1 (> 1.1.2) but it is not going to be installed Depends: libxext6 but it is not going to be installed Depends: libxft2 (> 2.1.1) but it is not going to be installed Depends: libxi6 but it is not going to be installed Depends: libxinerama1 but it is not going to be installed Depends: libxrandr2 but it is not going to be installed Depends: libxrender1 but it is not going to be installed Depends: fontconfig Recommends: libgl1-mesa-glx or libgl1 Recommends: libglu1-mesa but it is not going to be installed or libglu1 Recommends: libxmu6 (>= 4.3.0.dfsg.1-4) but it is not going to be installed libqtstalker0:i386 : Depends: libgcc1:i386 (>= 1:4.1.1) but it is not going to be installed Depends: libqt3-mt:i386 (>= 3:3.3.8b) but it is not going to be installed Depends: libstdc++6:i386 (>= 4.1.1) but it is not going to be installed qtstalker:i386 : Depends: libgcc1:i386 (>= 1:4.1.1) but it is not going to be installed Depends: libqt3-mt:i386 (>= 3:3.3.8b) but it is not going to be installed Depends: libstdc++6:i386 (>= 4.1.1) but it is not going to be installed Depends: libx11-6:i386 but it is not going to be installed Depends: libxext6:i386 but it is not going to be installed Recommends: qtstalker-doc:i386 (= 0.36-2) but it is not installable qtstalker-plugin-mysql:i386 : Depends: libgcc1:i386 (>= 1:4.1.1) but it is not going to be installed Depends: libqt3-mt:i386 (>= 3:3.3.8b) but it is not going to be installed Depends: libstdc++6:i386 (>= 4.1.1) but it is not going to be installed qtstalker-quote-plugins:i386 : Depends: libgcc1:i386 (>= 1:4.1.1) but it is not going to be installed Depends: libqt3-mt:i386 (>= 3:3.3.8b) but it is not going to be installed Depends: libstdc++6:i386 (>= 4.1.1) but it is not going to be installed ta-lib0-dev:i386 : Depends: libc6-dev:i386 but it is not going to be installed or libc-dev:i386 E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

Thanks again.

****Per @N0rbert's advice I reinstalled. Qtstalker launced, but crashed **** with an error in the comments at first try of data retrieval.

During the re-installation, at the last command dpkg -i --force-all *.deb to install packages. I get the following errors. Not sure what's going on, it encountered errors libqt3-mt Perhaps that's the reason...

Preparing to replace libdb4.6:i386 4.6.21-16 (using libdb4.6_4.6.21-16_i386.deb) ... Unpacking replacement libdb4.6:i386 ... Preparing to replace libmysqlclient15off:i386 5.0.92-b23.87.lenny (using libmysqlclient15off_5.0.92-b23.87.lenny_i386.deb) ... Unpacking replacement libmysqlclient15off:i386 ... Selecting previously unselected package libqt3-mt. dpkg: error processing libqt3-mt_3.3.8-b-8ubuntu3_amd64.deb (--install): libqt3-mt: 3:3.3.8-b-8ubuntu3 (Multi-Arch: no) is not co-installable with libqt3-mt:i386 3:3.3.8-b-8ubuntu3 (Multi-Arch: no) which is currently installed Preparing to replace libqtstalker0-dev:i386 0.36-2 (using libqtstalker0-dev_0.36-2_i386.deb) ... Unpacking replacement libqtstalker0-dev:i386 ... Preparing to replace libqtstalker0:i386 0.36-2 (using libqtstalker0_0.36-2_i386.deb) ... Unpacking replacement libqtstalker0:i386 ... Preparing to replace libta-lib0:i386 0.4.0-2 (using libta-lib0_0.4.0-2_i386.deb) ... Unpacking replacement libta-lib0:i386 ... Preparing to replace qtstalker-doc 0.36-2 (using qtstalker-doc_0.36-2_all.deb) ... Unpacking replacement qtstalker-doc ... Preparing to replace qtstalker-plugin-mysql:i386 0.36.0-1 (using qtstalker-plugin-mysql_0.36.0-1_i386.deb) ... Unpacking replacement qtstalker-plugin-mysql:i386 ... Preparing to replace qtstalker-quote-plugins:i386 0.36-2 (using qtstalker-quote-plugins_0.36-2_i386.deb) ... Unpacking replacement qtstalker-quote-plugins:i386 ... Preparing to replace qtstalker:i386 0.36-2 (using qtstalker_0.36-2_i386.deb) ... Unpacking replacement qtstalker:i386 ... Preparing to replace ta-lib0-dev:i386 0.4.0-2 (using ta-lib0-dev_0.4.0-2_i386.deb) ... Unpacking replacement ta-lib0-dev:i386 ... Setting up libdb4.6:i386 (4.6.21-16) ... Setting up libmysqlclient15off:i386 (5.0.92-b23.87.lenny) ... dpkg: also configuring libqt3-mt:i386' (required bylibqtstalker0:i386') Setting up libta-lib0:i386 (0.4.0-2) ... Setting up qtstalker-doc (0.36-2) ... dpkg: also configuring libqt3-mt:i386' (required by qtstalker-plugin-mysql:i386') dpkg: also configuring libqt3-mt:i386' (required byqtstalker-quote-plugins:i386') dpkg: also configuring libqt3-mt:i386' (required byqtstalker:i386') Setting up ta-lib0-dev:i386 (0.4.0-2) ... Setting up libqt3-mt:i386 (3:3.3.8-b-8ubuntu3) ... Setting up libqtstalker0:i386 (0.36-2) ... dpkg: error processing libqt3-mt:i386 (--install): package libqt3-mt:i386 is already installed and configured Setting up qtstalker-plugin-mysql:i386 (0.36.0-1) ... dpkg: error processing libqt3-mt:i386 (--install): package libqt3-mt:i386 is already installed and configured Setting up qtstalker-quote-plugins:i386 (0.36-2) ... dpkg: error processing libqt3-mt:i386 (--install): package libqt3-mt:i386 is already installed and configured Setting up qtstalker:i386 (0.36-2) ... Setting up libqtstalker0-dev:i386 (0.36-2) ... Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: libqt3-mt_3.3.8-b-8ubuntu3_amd64.deb libqt3-mt:i386 libqt3-mt:i386 libqt3-mt:i386

BusyBox error message:

grub> prompt:

UUID description (results of ls -l):

GParted:

Results of blkid:

I have tried all the methods I could find on the internet. Unfortunately, nothing fixed my problem. All these are happening inside VirtualBox. It started happening after an audio update in Ubuntu. I can post the blkid and the UUID that creates the error if requested. I anyway dug the resume inside the conf file and it looks to be different.

I am not able to do sudo or edit the files inside initramfs or GRUB. Update 1: The blkid and uuid looks different. Do you have any idea how to edit them?

Note: I am unable to copy paste the error messagel, so I have attached the screenshots.

I have my little script to start an application and do some more things on my Ubuntu 16.04 which looks like this:

#!/bin/bash
./ROC-smi/rocm-smi -d 1 --setfan 90
./ROC-smi/rocm-smi -d 0 --setfan 90
./ROC-smi/rocm-smi -d 2 --setfan 110
./ROC-smi/rocm-smi -d 3 --setfan 110
./ROC-smi/rocm-smi -d 4 --setfan 110
cd teamredminer-v0.4.1-linux
/usr/bin/screen -dm ./teamredminer --algo=cnr --url=*** --user=*** --pass=*** --watchdog_script

I want to autostart it with sudo. I tried rc.local with:

sh /path/to/my/script.sh
exit 0

I also tried using crontab with:

@reboot /path/to/my/script.sh

nothing worked, rc.local didn't show any errors when I tested it with sudo /etc/init.d/rc.local start, but when I type sudo screen -xr or screen -ls or sudo screen -ls, I always got a message that there's no screen to attach.

I am trying to set up my Ubuntu 16.04 machine to communicate with a lidar scanner (Hokuyo) through my Ethernet port (eth0) and have my WiFi connect to the internet over wlan0. The lidar communication works fine, but I get no internet through wireless even though Network Manager says I am connected.

My /etc/network/interfaces file is as follows (I deleted all the wlan0 info while troubleshooting so as of now just have the eth0):

auto lo
iface lo inet loopback

#Hokuyo Sensor
auto eth0
iface eth0 inet static
  address 192.168.0.11
  netmask 255.255.255.0
  gateway 192.168.0.1
metric 800

The WiFi is connected through the regular network manager, however I don't get any internet and cannot ping any websites.

Results of ifconfig:

/etc/network$ ifconfig
eth0      Link encap:Ethernet  HWaddr 8c:16:45:30:97:eb  
          inet addr:192.168.0.11  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::8e16:45ff:fe30:97eb/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:50 errors:0 dropped:0 overruns:0 frame:0
          TX packets:47 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:6788 (6.7 KB)  TX bytes:6871 (6.8 KB)
          Interrupt:16 Memory:ed800000-ed820000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:3154 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3154 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:209714 (209.7 KB)  TX bytes:209714 (209.7 KB)

wlan0     Link encap:Ethernet  HWaddr a0:c5:89:a1:a8:15  
          inet addr:192.168.0.166  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::45e6:1af7:c161:97e1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:711 errors:0 dropped:0 overruns:0 frame:0
          TX packets:472 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:80467 (80.4 KB)  TX bytes:57784 (57.7 KB)

Results of sudo lshw -class network:

/etc/network$ sudo lshw -class network
[sudo] password for nicolaskk: 
  *-network
       description: Wireless interface
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: wlan0
       version: 78
       serial: a0:c5:89:a1:a8:15
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-33-generic firmware=34.0.1 ip=192.168.0.166 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:134 memory:ecd00000-ecd01fff
  *-network
       description: Ethernet interface
       product: Ethernet Connection (5) I219-LM
       vendor: Intel Corporation
       physical id: 1f.6
       bus info: pci@0000:00:1f.6
       logical name: eth0
       version: 31
       serial: 8c:16:45:30:97:eb
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.1-3 ip=192.168.0.11 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:124 memory:ed800000-ed81ffff

This will look like a duplicate but I assure you it's not. Unless I simply haven't found the solution yet from the correct post.

When boot-repair says, "Please do not forget to make your BIOS boot on sda1/EFI/ubuntu/shimx64.efi file!", how do I do this?

I would think that there should be NO difference between rebooting and turning off and then back on your computer. But in my case, there is.

Update: Now both restarting and turning off/on do not boot

I looked here: How do I make my BIOS boot on shimx64.efi file? (AND MANY OTHER SOURCES BUT TO NO AVAIL)

I tried, this: - as the previous post suggests. Update: along with reading the links that oldfred posted

ubuntu@ubuntu:~$ sudo efibootmgr -v

0001 shows that it points to my file. If I restart the computer, it boots (but very slowly), and it seems to be ok as long as I only restart (BUT if I turn off my computer, it will not boot and I am forced to use the USB live ubuntu install, and repeat the boot-repair install process. This is getting incredibly time consuming. Does anyone know how to force the system to always use this? I'm using the LVM setup on ubuntu install. And I believe i'm using EFI since the file is shimx64-efi.

Output from: (using live USB) ubuntu@ubuntu:~$ sudo efibootmgr -v

BootCurrent: 0008
Timeout: 0 seconds
BootOrder: 0001,0008,0006,0005,0000,0003,0004
Boot0000* Windows Boot Manager  VenHw(99e275e7-75a0-4b37-a2e6-c5385e6c00cb)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}....................
Boot0001* ubuntu    HD(1,GPT,f3e3baf6-59ba-457d-8dab-9b9770eace6e,0x800,0x100000)/File(\EFI\ubuntu\shimx64.efi)
Boot0003  UEFI: IP4 Realtek PCIe GBE Family Controller  PciRoot(0x0)/Pci(0x1c,0x0)/Pci(0x0,0x0)/MAC(2089840f7458,0)/IPv4(0.0.0.00.0.0.0,0,0)AMBO
Boot0004  UEFI: IP6 Realtek PCIe GBE Family Controller  PciRoot(0x0)/Pci(0x1c,0x0)/Pci(0x0,0x0)/MAC(2089840f7458,0)/IPv6([::]:[::]:,0,0)AMBO
Boot0005* Hard Drive    BBS(HD,,0x0)AMGOAMNO........o.S.T.1.0.0.0.L.M.0.2.4. .H.N.-.M.1.0.1.M.B.B....................A...........................>..Gd-.;.A..MQ..L.2.S.Q.R.9.J.C.F.0.A.5.0.6.6. . . . . . ......AMBOAMNO........u.K.i.n.g.s.t.o.n.D.T. .1.0.1. .G.2. .P.M.A.P....................A.............................B..Gd-.;.A..MQ..L.K.i.n.g.s.t.o.n.D.T. .1.0.1. .G.2. .P.M.A.P......AMBO
Boot0006* CD/DVD Drive  BBS(CDROM,,0x0)AMGOAMNO........o.T.S.S.T.c.o.r.p. .C.D.D.V.D.W. .S.N.-.2.0.8.B.B....................A...........................>..Gd-.;.A..MQ..L.8.R.9.F.G.6.C.E.0.9.D.0.Z.X. . . . . . ......AMBO
Boot0007  Could not parse device path: No such file or directory

I am about to restart my computer again (after reinstalling boot-repair, for the nth time), and am definitely not looking forward to repeating this process again. The reason for my post.

Update: Still did not reboot, created the following postbin: paste.ubuntu.com/p/PF3f4xNDjT On reboot, if I hit ESC at the splash screen, I get the following menu: menu of which none of these options work - they all just bring me straight back to this menu. And not one is this one which boot-repair said I need to boot to: sda1/EFI/ubuntu/shimx64.efi If I try 'other' and boot to rescue mode, it brings me to this prompt and stops: initramfs prompt As of 10/11/2018 10:10PM EST - I'm stuck

Thank you! I really appreciate any guidance here. This is driving me absolutely nuts!

I have a wireless TP-Link WN822N v4 usb wireless adapter I want to use in Ubuntu. Drivers rtl8192eu are not found in Lib/Modules after make install.

Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
$ uname -r 4.15.0-29-generic

I followed the instructions from an older post on this forum: How to install TP link WN822N on Ubuntu?

git clone https://github.com/jeremyb31/rtl8192eu-linux-driver
cd rtl8192eu-linux-driver
sudo make
sudo make install
sudo modprobe 8192eu

Everything ran successfully, except for the last command: sudo modprobe 8192eu.

modprobe: FATAL: Module 8192eu not found in directory /lib/modules/4.15.0-29-generic

All the 8192eu drivers are in my Home directory after the cd and make install . Here are 2 examples:

CC      /home/tomx2/rtl8192eu-linux-driver/8192eu.mod.o
LD [M]  /home/tomx2/rtl8192eu-linux-driver/8192eu.ko
make[1]: Leaving directory '/usr/src/linux-headers-4.15.0-29-generic'

I am unable to to copy/paste 8192eu drivers in Lib/Modules, without permission.

How can I get 8192eu drivers into Lib/Modules?

I am a new Ubuntu user. Any help will be appreciated.

EDITED BY OP: 08/06/2018:

@Jeremy31 As per your request lsusb is listed below. I can connect to my hotspot, but I'm not sure the the rtl8192eu.ko driver is being used. I suspect a default driver is being accessed. Getting only 1 band during connection. Very slow. I do not see 8192eu.ko driver in Lib/Module (see listing below). The wireless usb adapter TP-Link WN822N does not light up/blink but will disconect from hotspot when I unplug.

Is there a way I can get rtl8192eu driver to be used?

Thanks.

LSUSB

Bus 002 Device 002: ID 2109:0813 VIA Labs, Inc.

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Bus 001 Device 006: ID 0bda:5682 Realtek Semiconductor Corp.

Bus 001 Device 004: ID 0a5c:216f Broadcom Corp. BCM20702A0 Bluetooth

Bus 001 Device 007: ID 0951:16a1 Kingston Technology

Bus 001 Device 005: ID 2357:0108

Bus 001 Device 003: ID 2109:2813 VIA Labs, Inc.

Bus 001 Device 002: ID 046d:c077 Logitech, Inc. M105 Optical Mouse

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

All Drivers named 8192 in Lib/Module/modules-order listed. kernel/drivers/staging/rtl8192u/r8192u_usb.ko kernel/drivers/staging/rtl8192e/rtllib.ko kernel/drivers/staging/rtl8192e/rtllib_crypt_ccmp.ko kernel/drivers/staging/rtl8192e/rtllib_crypt_tkip.ko kernel/drivers/staging/rtl8192e/rtllib_crypt_wep.ko kernel/drivers/staging/rtl8192e/rtl8192e/r8192e_pci.ko kernel/drivers/net/wireless/realtek/rtlwifi/rtl8192ce/rtl8192ce.ko kernel/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/rtl8192cu.ko kernel/drivers/net/wireless/realtek/rtlwifi/rtl8192se/rtl8192se.ko kernel/drivers/net/wireless/realtek/rtlwifi/rtl8192de/rtl8192de.ko kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/rtl8723ae.ko kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723be/rtl8723be.ko kernel/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/rtl8188ee.ko kernel/drivers/net/wireless/realtek/rtlwifi/btcoexist/btcoexist.ko kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723com/rtl8723-common.ko kernel/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/rtl8821ae.ko kernel/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/rtl8192ee.ko kernel/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.ko

iwconfig wlx18a6f712cbe1 IEEE 802.11 ESSID:"BayBreeze Hotel"
Mode:Managed Frequency:2.462 GHz Access Point: 2A:A4:3C:4F:4B:1E
Bit Rate=1 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off Power Management:off Link Quality=28/70 Signal level=-82 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0

ifconfig wlx18a6f712cbe1: flags=4163 mtu 1500 inet 10.0.10.201 netmask 255.0.0.0 broadcast 10.255.255.255 inet6 fe80::bf41:879e:2afb:9bc prefixlen 64 scopeid 0x20 ether 18:a6:f7:12:cb:e1 txqueuelen 1000 (Ethernet) RX packets 15487 bytes 4469574 (4.4 MB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 1882 bytes 206547 (206.5 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

EDITED BY OP Tomx2: 08/06/2018 11:17:00 PM:

sudo lsmod | grep cfg cfg80211 622592 2 wl,mac80211

2 References to mac80211 in Lib/Modules.

kernel/net/mac80211/mac80211.ko

kernel/drivers/net/wireless/mac80211_hwsim.ko

Edited 08/10/2018 New info. This is the OP:

I was able to resolve the “Modprobe Fatal Module 8192eu not found in Lib/Modules” error. Needed to install app: libelf-dev. This allowed a clean Make/Install. When I launch the internet using TL-link Wn822N as my USB interface, the connection is extremely slow.

Only one Band and the wireless interface does not light up. Below are 2 output (linux) commands for your review. One shows 8192eu driver the other shows rtlxxxu.

(Q) Do I need to Modprobe another driver? Can anybody help?

sudo lsmod | grep cfg

cfg80211 622592 3 wl,mac80211,8192eu

sudo lshw -c network

*-network description: Wireless interface physical id: 2 bus info: usb@1:2.3 logical name: wlx18a6f712cbe1 serial: 18:a6:f7:12:cb:e1 capabilities: ethernet physical wireless configuration: broadcast=yes driver=rtl8xxxu driverversion=4.15.0-29-generic firmware=N/A ip=10.0.10.201 link=yes multicast=yes wireless=IEE

The internal microphone suddenly stopped working in Ubuntu 18.04 on my Lenovo Yoga 900 laptop. It was working for a while before, so I suspect some update caused it to stop working.

The internal microphone is detected, but it simply doesn't pick up any sound. Note the input level in this screenshot.

I have tried an external microphone and it successfully picks up sound.

My alsa info can be found here.

wget https://storage.googleapis.com/golang/go1.7.5.linux-amd64.tar.gz

extract the package

sudo tar -zxvf go1.7.5.linux-amd64.tar.gz -C /usr/local/

Added by Go Path

echo 'export GOROOT=/usr/local/go' >> ~/.bashrc

echo 'export GOPATH=$HOME/go' >> ~/.bashrc 

echo 'export PATH=$PATH:$GOROOT/bin:$GOPATH/bin' >> ~/.bashrc

i am getting error when typing

go version 

-bash: /usr/bin/go: No such file or directory

I use Ubuntu 16.04 LTS. My computer has 2 GB RAM and 320 GB hard disk space in which the allocated space for OS usage is 100 GB and swap space and the other for partitions. Recently after updates while doing multitasking my screen freezes and I have to manually reboot my system from the start. Do you have any suggestions?

Results of free -h:

$ free -h
               total        used       free      shared  buff/cache   available
Mem:           1.8G        977M        157M        201M        746M        467M
Swap:            0B          0B          0B

Results of swapon:

swapon

Results of df:

$ df
Filesystem     1K-blocks     Used Available Use% Mounted on
udev              942524        0    942524   0% /dev
tmpfs             192584     6120    186464   4% /run
/dev/sda6      103936232 10980932  87652568  12% /
tmpfs             962904    18980    943924   2% /dev/shm
tmpfs               5120        4      5116   1% /run/lock
tmpfs             962904        0    962904   0% /sys/fs/cgroup
cgmfs                100        0       100   0% /run/cgmanager/fs
tmpfs             192584       56    192528   1% /run/user/1000

GParted:

Results of blkid:

:~$ sudo blkid
/dev/sda1: UUID="7C7E5116262411BD" TYPE="ntfs" PARTUUID="01468a4c-01"
/dev/sda5: UUID="eed0dfa4-6e24-47fe-84bc-c598b144b116" TYPE="swap" 
PARTUUID="01468a4c-05"
/dev/sda6: UUID="14a87b2f-9da8-487c-a6f5-03ddcea8bb25" TYPE="ext4" 
PARTUUID="01468a4c-06"

Results of cat /etc/fstab:

~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name 
devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda6 during installation
UUID=14a87b2f-9da8-487c-a6f5-03ddcea8bb25 /               ext4    
errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=4acee253-61f3-4f36-857e-9cb045346e7b none            swap    sw              
0       0

After doing step 2 that was suggested in the comments:

$ swapon -a
$ swapon
NAME      TYPE      SIZE  USED PRIO
/dev/sda5 partition   2G 67.6M   -1
~$ free -h
     total        used        free      shared  buff/cache   available
Mem: 1.8G        1.1G        297M        159M        468M      367M
Swap:1.9G         67M        1.9G

I just installed Ubuntu today. I'm testing everything out and it seems pretty cool so far. There's just one big problem. The audio suddenly stopped working. It worked just fine when I first installed the system, but it has stopped for no reason that I can determine.

I don't like to use proprietary software (though I will if I have to), so I removed these packages: firmware-crystalhd nvidia-libopencl1-331-updates nvidia-opencl-icd-331-updates, but they don't appear to be the problem, because reinstalling them didn't fix the problem.

I checked alsamixer, and it looks rather different from what I'm used to:

The "Sound" settings in the system settings aren't too helpful, but here's another screenshot just in case. I can't move the slider, and there are no sound devices listed.

Everything was ok until I get a dialog box stating:

failed to start x server(your graphical interface) It might not be set up correctly. Do you want to view the X server output to diagnose the problem.?

Yes or no gets me to the same end.

Then after that another box comes up telling me:

the X server is now disabled. Restart GDM when it is configured correctly

So ...how do I configure it.

Eventually I get " loading please wait" ... some stuff

Then

ubuntu@ubuntu: ~$  

with a blinking underscore