I am facing a critical issue where my Wi-Fi has completely disappeared. This hardware was working perfectly on Ubuntu 22.04 (Jellyfish). The issue started after upgrading to Ubuntu 24.04 and subsequently trying the 6.19.3 mainline kernel. Now, even when rolling back to the standard 24.04 kernel (6.8.100), the hardware remains invisible.

System Specs:

• Model: Dell Latitude 5511

• CPU: Intel® Core™ i7-10850H (Comet Lake)

• Wi-Fi Card: Intel AX201 (CNVi)

• OS: Ubuntu 24.04.4 LTS

• Current Kernel: 6.8.100-generic (also tested 6.19.3)

The Problem: The Wi-Fi card is no longer appearing on the PCIe bus. lspci returns absolutely nothing for the network controller. In GNOME settings, the Bluetooth icon is visible but "disabled" and cannot be toggled.

Diagnostics run so far:

1. Hardware Bus Check:

   • lspci -nnk | grep -iA3 network → Empty output.

   • lsusb → Intel Bluetooth module is NOT listed.

2. Kernel Logs:

   • dmesg | grep iwlwifi → Empty output. (The kernel isn't even attempting to load the driver because the hardware isn't detected on the bus).

3. Firmware/Filesystem:

   • Manually updated /lib/firmware from the official linux-firmware.git (kernel.org).

   • Verified iwlwifi-Qu-*-77.ucode files are present with 644 permissions.

   • modprobe iwlwifi loads the module, but no interface is created.

4. Hardware/BIOS Troubleshooting:

   • Performed a "Flea Power" drain (battery disconnected, power button held for 60s).

   • Reset BIOS to Defaults and toggled WLAN/Bluetooth radio settings.

   • Physically reseated the AX201 M.2 card.

The Question: Since this hardware worked 100% on Ubuntu 22.04, is it possible that the 24.04 upgrade or the 6.19 mainline kernel pushed a firmware/microcode update to the AX201 that has caused the Intel CNVi interface to hang or become "invisible" to the PCIe bus?

Has anyone encountered this specific "vanishing hardware" on Comet Lake (10th Gen) systems with Noble Numbat?

I am trying to get a new microphone to work with a MSI X570-A PRO desktop PC. It uses a TRRS 3.5 mm connector, and seemingly pretends to be a headset, with the left/right speaker tip/ring connected to nothing. Buying a $5 splitter is unacceptable because the current microphone was $1.5 and a new USB-C one would be $3.

The microphone works with the integrated/combo/headset port in my Linux tablet and my Windows laptop. The recording words, as with my other wired earbuds with center mic. So the question then becomes how to reconfigure the desktop motherboard to accept any TRRS one-jack headset. Rear {Line in, mic, and line out} and front {Mic, speakers} ports all don't work for this microphone. I'd've given up had this been Windows, but I hope Linux might have a way to retask any internal wiring/multiplexer if present.

The plug/unplug is detected properly by pipewire/pulseaudio, but afterwards there's no speech recorded in Audacity, just perhaps a pop upon plug/unplug. I tried arecord -D with all devices in arecord -L, and all either flatline or have only some quiet line noise. I get snd_hda_codec_alc882 hdaudioC1D0: The codec is being used, can't reconfigure in dmesg when I tried to play with hdajackretask and save even without overriding anything, even after masking+stopping my user pipewire service. I've set toggled pavucontrol-qt profiles across Analog Stereo Output, Analog Stereo Input, Analog Stereo Duplex, and "Analog Surround 5.1 Output + Analog Stereo Input", but my speech is still not recorded.

So which Ubuntu 25.10 command can reconfigure a X570 motherboard's HD Audio Connectors into accepting a TRRS microphone?

I messed up here. I had an old Sony Vaio that I wanted to give to a friend. Replaced the HDD with an SDD and was using a USB boot of Ubuntu 24.04 LTS. The USB boot looked great but even after going thru the install I could not get this older laptop (2009 or so) to automatically boot. I eventually installed grub 2.2 and (apologies here) I believe it was installed in the MBR as it always comes up first. The configuration I used at the start had the linux partition set at ro (readonly) and now that is all that ever comes up. I understand that during boot the root partition is RO but it is also supposed to switch to RW and it never does. I did boot into recovery and do a fsck -y but that did not change anything. the only way I get this installation to work is if during boot I edit the GRUB boot settings from RO to RW and then things work well. I have checked /boot/grub, I have mounted /dev/sda1 (everything else is on sda2) but none of those files appear to show this boot setting. When I am in grub 2.2 during startup I can see the "ro" on the linux line. I have to change it to "rw" to make things work. Guidance is appreciated. I feel so stupid here. Thanks in advance.

Intenté instalar ubuntu tras fracasar rotundamente por archinstall y al instalar mediante el instalador de ubuntu me arroja un error y me dejó mi disco duro sin archivos ya que borró todo pero no instalo ubuntu. Por favor ayuda

Es mi primera vez usando Linux, siempre quise ocuparlo y hace 5 días lo hice; me compré un notebook para hacer esto y vendí mi Pc.

Me entregaron el notebook que es un Acer a514-52k y actualice la bios, instalé mediante archinstall - kde plasma. El problema ocurrió cuando no me reconoció el touchpad. Hice todo lo posible y dichos en foros y nada funciona, a lo más reconoció el touchpad pero sin funcionar. Intente instalar ubuntu y no me deja instalar tampoco. Por favor necesito su ayuda. No me dejen solo en esto. Siempre quise ser usuario de Linux pero me siento solo en esto.

Because I encrypted the drive and I'm already asked to enter a password at system boot, I wondered what downsides could arise if I check the 'automatic login' option for my user, as this would streamline accessing the computer, having to enter just 1 instead of 2 passwords every single time. Thank you.

We have created a volume and mapped it to Ubuntu server from IBM storage. The volume can be accessed and operated as normal (creating/deleting files), however we face a problem where the IBM storage reported that the physical capacity is nearly full (92% out of 80TB) and that there is no reclaimable space, but the volume on Ubuntu only consumes around 40%/~35TB when running df -h.

The storage team suggests that configuration has to be made on the OS side since the original volume is said to be thin-provisioned, but the configuration on the OS level has not been configured to act as such. The support team said that configuration is not part of their support service, and did not provide a guidance on how to configure volume so that the free space can be reclaimed.

Is there any documentation on how to configure the volume to be able to reclaim this free space?

lsblk --discard command result below:

root@linuxveeam:/etc/lvm# lsblk --discard
NAME                                          DISC-ALN DISC-GRAN DISC-MAX DISC-ZERO
sda                                                  0       512B       0B         0
├─sda1                                               0       512B       0B         0
├─sda2                                               0       512B       0B         0
└─sda3                                               0       512B       0B         0
  └─ubuntu--vg-ubuntu--lv                            0         0B       0B         0
sdb                                                  0       512B       0B         0
└─Veeam_Repo_01                                      0         0B       0B         0
  └─vg_veeamrepo-lv_veeamrepo                        0         0B       0B         0
sdc                                                  0       512B       0B         0
└─Veeam_Repo_02                                      0         0B       0B         0
  └─vg_veeamrepo02-lv_veeamrepo02                    0         0B       0B         0
sdd                                                  0       512B       0B         0
└─Veeam_Repo_01                                      0         0B       0B         0
  └─vg_veeamrepo-lv_veeamrepo                        0         0B       0B         0
sde                                                  0       512B       0B         0
└─Veeam_Repo_02                                      0         0B       0B         0
  └─vg_veeamrepo02-lv_veeamrepo02                    0         0B       0B         0
sr0                                                  0       512B       0B         0

Edit: add output for findmnt --real and grep . /sys/block//queue/discard_max_hw_bytes

A recent auto-upgrade from 6.14.0-37 to 6.17.0-14 yields a kernel panic at boot: Unable to mount root fs Unknown Block (0,0)

To get the machine up I have to select 6.14.0-37 from the GRUB boot menu. I can no longer do a normal boot/reboot because GRUB auto boots the newest (bad) kernel. I want to remove 6.17.0-14 from the GRUB menu.

All the help articles I've found instruct how to remove old kernel versions. How do I remove the NEWEST kernel version and retain the oldest in GRUB?

In reply to @heynnema:

ls -al /boot | grep init
lrwxrwxrwx  1 root root       28 Feb 22 08:04 initrd.img -> initrd.img-6.17.0-14-generic
-rw-r--r--  1 root root 75369010 Feb 22 08:00 initrd.img-6.14.0-37-generic
lrwxrwxrwx  1 root root       28 Feb 22 06:24 initrd.img.old -> initrd.img-6.14.0-37-generic

In reply to guiverc:

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 24.04.4 LTS
Release:    24.04
Codename:   noble

In reply to david, looks like a DKMS build issue: etting up linux-image-6.17.0-14-generic (6.17.0-14.14~24.04.1) ... Setting up linux-headers-6.17.0-14-generic (6.17.0-14.14~24.04.1) ... /etc/kernel/header_postinst.d/dkms:

• dkms: running auto installation service for kernel 6.17.0-14-generic Sign command: /usr/bin/kmodsign Signing key: /var/lib/shim-signed/mok/MOK.priv Public certificate (MOK): /var/lib/shim-signed/mok/MOK.der

Building module: Cleaning build area... make -j24 KERNELRELEASE=6.17.0-14-generic -C /lib/modules/6.17.0-14-generic/build M=/var/lib/dkms/virtualbox/7.0.16/build...(bad exit status: 2) ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/virtualbox-dkms.0.crash' Error! Bad return status for module build on kernel: 6.17.0-14-generic (x86_64) Consult /var/lib/dkms/virtualbox/7.0.16/build/make.log for more information. dkms autoinstall on 6.17.0-14-generic/x86_64 failed for virtualbox(10) Error! One or more modules failed to install during autoinstall. Refer to previous errors for more information.

• dkms: autoinstall for kernel 6.17.0-14-generic ...fail! run-parts: /etc/kernel/header_postinst.d/dkms exited with return code 11 dpkg: error processing package linux-headers-6.17.0-14-generic (--configure): installed linux-headers-6.17.0-14-generic package post-installation script subprocess returned error exit status 11 dpkg: dependency problems prevent configuration of linux-headers-generic-hwe-24.04: linux-headers-generic-hwe-24.04 depends on linux-headers-6.17.0-14-generic; however: Package linux-headers-6.17.0-14-generic is not configured yet.

dpkg: error processing package linux-headers-generic-hwe-24.04 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of linux-generic-hwe-24.04: linux-generic-hwe-24.04 depends on linux-headers-generic-hwe-24.04 (= 6.17.0-14.14~24.04.1); however: Package linux-headers-generic-hwe-24.04 is not configured yet.

dpkg: error processing package linux-generic-hwe-24.04 (--configure): dependency problems - leaving unconfigured Processing triggers for linux-image-6.17.0-14-generic (6.17.0-14.14~24.04.1) ... /etc/kernel/postinst.d/dkms:

• dkms: running auto installation service for kernel 6.17.0-14-generic Sign command: /usr/bin/kmodsign Signing key: /var/lib/shim-signed/mok/MOK.priv Public certificate (MOK): /var/lib/shim-signed/mok/MOK.der Building module: Cleaning build area... make -j24 KERNELRELEASE=6.17.0-14-generic -C /lib/modules/6.17.0-14-generic/build M=/var/lib/dkms/virtualbox/7.0.16/build...(bad exit status: 2) ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/virtualbox-dkms.0.crash' Error! Bad return status for module build on kernel: 6.17.0-14-generic (x86_64) Consult /var/lib/dkms/virtualbox/7.0.16/build/make.log for more information. dkms autoinstall on 6.17.0-14-generic/x86_64 failed for virtualbox(10) Error! One or more modules failed to install during autoinstall. Refer to previous errors for more information.
• dkms: autoinstall for kernel 6.17.0-14-generic ...fail! run-parts: /etc/kernel/postinst.d/dkms exited with return code 11 dpkg: error processing package linux-image-6.17.0-14-generic (--configure): installed linux-image-6.17.0-14-generic package post-installation script subprocess returned error exit status 11 Errors were encountered while processing: linux-headers-6.17.0-14-generic linux-headers-generic-hwe-24.04 linux-generic-hwe-24.04 linux-image-6.17.0-14-generic

DKMS issue relates to building the VirtulBox 7.0.16 kernel module

I have an Ubuntu machine I regularly use. I suspend it when not in use and resume it when I need it. This has worked really well for years. Upgraded Ubuntu recently from 25.04 to 25.10 and now it seems to block the suspend request, even though I am doing the same thing with the same apps as before. No real behavior change on my part with respect to applications or system usage.

I have gathered the following from systemd-inhibitor list.

myuser@svr:~$ systemd-inhibit --list
WHO                          UID  USER   PID   COMM            WHAT                                                     WHY                                                       MODE 
ModemManager                 0    root   2929  ModemManager    sleep                                                    ModemManager needs to reset devices                       delay
NetworkManager               0    root   2899  NetworkManager  sleep                                                    NetworkManager needs to turn off networks                 delay
UPower                       0    root   3636  upowerd         sleep                                                    Pause device polling                                      delay
Unattended Upgrades Shutdown 0    root   3022  unattended-upgr shutdown                                                 Stop ongoing upgrades or perform upgrades before shutdown delay
Discord                      1000 myuser 41618 Discord         sleep                                                    Application cleanup before suspend                        delay
GNOME Shell                  1000 myuser 4709  gnome-shell     sleep                                                    GNOME needs to lock the screen                            delay
GNOME Shell                  1000 myuser 4709  gnome-shell     sleep                                                    GNOME needs to save screen time data                      delay
myuser                       1000 myuser 4853  gsd-media-keys  handle-power-key:handle-suspend-key:handle-hibernate-key GNOME handling keypresses                                 block
myuser                       1000 myuser 4853  gsd-media-keys  sleep                                                    GNOME handling keypresses                                 delay
myuser                       1000 myuser 4858  gsd-power       sleep                                                    GNOME needs to lock the screen                            delay
myuser                       1000 myuser 4702  gnome-session-s sleep                                                    user session inhibited                                    block

We can see that two of them have the MODE column in "block" (scroll to the right)

myuser                       1000 myuser 4853  gsd-media-keys  handle-power-key:handle-suspend-key:handle-hibernate-key GNOME handling keypresses  
myuser                       1000 myuser 4702  gnome-session-s sleep                                                    user session inhibited                                    block

I took those two process IDs and searched for them:

myuser@svr:~$ ps -ef | grep 4702
myuser      4702    4325  0 Nov05 ?        00:00:00 /usr/libexec/gnome-session-service --session=ubuntu
myuser      4870    4702  0 Nov05 ?        00:00:00 [sh] <defunct>
myuser      4878    4702  0 Nov05 ?        00:00:00 [snap] <defunct>
myuser      4884    4702  0 Nov05 ?        00:00:00 [deja-dup-monito] <defunct>
myuser      4889    4702  0 Nov05 ?        00:00:00 [ubuntu-advantag] <defunct>
myuser      4894    4702  0 Nov05 ?        00:00:00 /usr/libexec/gsd-disk-utility-notify
myuser      4901    4702  0 Nov05 ?        00:00:00 /usr/libexec/evolution-data-server/evolution-alarm-notify
myuser      4912    4702  0 Nov05 ?        00:00:00 [ubuntu-report] <defunct>
myuser      4922    4702  0 Nov05 ?        00:00:02 /usr/bin/update-notifier
myuser   1165967 1165949  0 07:26 pts/0    00:00:00 grep --color=auto 4702
myuser@svr:~$ ps -ef | grep 4853
myuser      4853    4325  0 Nov05 ?        00:00:01 /usr/libexec/gsd-media-keys
myuser   1165972 1165949  0 07:26 pts/0    00:00:00 grep --color=auto 4853

I see a few child processes that probably need to a wait() from the parent process 4702, but other than that to my untrained eye -- I don't see anything really that should cause a problem with suspend. I will admit, I don't know the criteria suspend looks for.

Trying to understand what could be causing this.

I have a file name.ppk. I'm want to login ssh with .ppk file on Ubuntu Terminal.

I have try this post Login SSH with .ppk file on Ubuntu Terminal but getting this error "puttygen: error loading `name.ppk': PuTTY key format too new" when using this command line "puttygen name.ppk -O private-openssh -o name.pem"

Puttygen version: 0.73

Ubuntu version: 20.04

I need to use an intranet app which relies on locally installed fonts for its look, but snap version of Firefox by default doesn't look into user's ~/.fonts. Is there a workaround for that? If not, are there plans to address this specific use case?

I am running 21.10 with virt-manager 3.2.0. I have installed: qemu-system-aarch64 qemu-system-i386 qemu-system-x86_64-microvm qemu-system-arm qemu-system-x86_64 qemu-system-x86_64-spice

dpkg -l | grep qemu-system:

    ii  qemu-block-extra                           1:6.0+dfsg-2expubuntu1.1                   amd64        extra block backend modules for qemu-system and qemu-utils
ii  qemu-system-arm                            1:6.0+dfsg-2expubuntu1.1                   amd64        QEMU full system emulation binaries (arm)
ii  qemu-system-common                         1:6.0+dfsg-2expubuntu1.1                   amd64        QEMU full system emulation binaries (common files)
ii  qemu-system-data                           1:6.0+dfsg-2expubuntu1.1                   all          QEMU full system emulation (data files)
ii  qemu-system-gui:amd64                      1:6.0+dfsg-2expubuntu1.1                   amd64        QEMU full system emulation binaries (user interface and audio support)
ii  qemu-system-x86                            1:6.0+dfsg-2expubuntu1.1                   amd64        QEMU full system emulation binaries (x86)

When I first ran virt-manager, there was no "Architecture Options". Every time I attempted to build a VM, it would default to "x86_64". I then discovered, I did not have qemu-system-arm installed. So, I installed it. I then had "Architecture Options" available with: x86_64, aarch64, arm and armv6l. Still, no "i386".

So, I tried reinstalling "qemu-system-i386". Now, apt gives me "Note, selecting 'qemu-system-x86' instead of 'qemu-system-i386'". But, "qemu-system-x86" is not in my /usr/bin directory...and I was under the impression "qemu-system-i386" replaced the "qemu-kvm" driver.

I then tried directly installing "qemu-system-x86" with apt. It says it installed, but I still do not have it listed in my /usr/bin.

I've been at this all day and cannot figure out what I am missing to get virt-manager to poll through the available architectures on my desktop. Any help would be awesome.

Is there some way to have a custom fontconfig for the Snap-distributed Firefox that survives Firefox updates?

Background

I have a custom fontconfig at ~/.config/fontconfig/fonts.conf which worked fine when Firefox was installed via apt. With 21.10 distributing Firefox via Snap, it doesn't register my custom config unless it's in ~/snap/firefox/<somenumber>/.config/fontconfig/fonts.conf.

The problem is <somenumber> seems to change on update so I'm going to have to apply this over and over potentially. I tried dropping the file in ~/snap/common/.config/fontconfig/fonts.conf and even /etc/fonts/conf.d/99-custom-fonts.conf but those don't seem to be loaded.

brcmfmac: brcmf_cfg80211_set_power_mgmt: power save enabled

is exactly what shown on screen and on journalctl

SSH daemon is up and running so troubleshooting is more possible (because Ubuntu Desktop for Raspberry Pi doesn't use grub so switching to recovery mode is hard)

My current system setup is as follows:

System:    Host: Ubuntu 20.10 Kernel: 5.8.0-33-generic x86_64 
           bits: 64 
           Desktop: N/A 
           Distro: Ubuntu 20.10 (Groovy Gorilla)

Machine:   Type: Desktop motherboard: ASUSTeK model: M5A78L-M PLUS/USB3 v: Rev X.0x serial: <superuser/root required>

BIOS:      American Megatrends v: 0502 date: 11/18/2016 

CPU:       Info: 6-Core model: AMD FX-6300 bits: 64 type: MCP L2 cache: 2048 KiB 
           Speed: 1406 MHz min/max: 1400/3500 MHz Core speeds (MHz): 1: 1405 2: 1405 3: 1406 4: 1406 5: 1406 6: 1396 

Graphics:  Device-1: NVIDIA TU117 [GeForce GTX 1650] driver: nvidia v: 455.38 
           Display: x11 server: X.Org 1.20.9 driver: nvidia unloaded: fbdev,modesetting,nouveau,vesa resolution: 1920x1080~60Hz
OpenGL: renderer: GeForce GTX 1650/PCIe/SSE2 v: 4.6.0 NVIDIA 455.38

Audio:     Device-1: Advanced Micro Devices [AMD/ATI] SBx00 Azalia driver: snd_hda_intel 
           Device-2: NVIDIA driver: snd_hda_intel 
           Device-3: JMTek LLC. type: USB driver: hid-generic,snd-usb-audio,usbhid 
           Sound Server: ALSA v: k5.8.0-33-generic

Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169 
           IF: enp4s0 state: up speed: 100 Mbps duplex: full mac: 2c:4d:54:e9:5b:9d

Drives:    Local Storage: total: 689.34 GiB used: 51.90 GiB (7.5%) 
           ID-1: /dev/sda vendor: Western Digital model: WDS240G2G0A-00JH30 size: 223.58 GiB 
           ID-2: /dev/sdb vendor: Western Digital model: WD5000AZRX-00L4HB0 size: 465.76 GiB

Partition: ID-1: / size: 95.07 GiB used: 51.90 GiB (54.6%) fs: ext4 dev: /dev/sdb5 
Swap:      ID-1: swap-1 type: file size: 2.00 GiB used: 0 KiB (0.0%) file: /swapfile

Sensors:   System Temperatures: cpu: 31.0 C mobo: 30.0 C gpu: nvidia temp: 27 C 
           Fan Speeds (RPM): cpu: 2096 case-1: 0 gpu: nvidia fan: 50% 
Info:      Processes: 313 Uptime: 2h 01m Memory: 15.62 GiB used: 3.16 GiB (20.2%)
Shell:     Bash inxi: 3.1.07

Screenshots of the drives sda and sdb from GParted are shown below:

The first drive - sda (a 240 GB WD Green SSD) has Windows 10 installed in it. The second drive - sdb (a 500 GB WD HDD) has an NTFS partition with about 370 Gb allocated, then 512 MB ESP Partition which I had to create when installing Ubuntu 20.10, and the rest about 98 GB is ext4 with Ubuntu 20.10 installed. The GRUB is installed in sdb (it would not install on sda when I was installing Ubuntu 20.10)

I have a new 480 GB SSD drive on which I want to transfer / copy / the Ubuntu system which is currently on sdb5 (along with the ESP partition if required). Then I would remove the 500 GB HDD from the system and use it as an external drive, so my future system would have - (1) sda - 240 GB SSD with Windows 10 and (2) sdb - 480 GB SSD with the current Ubuntu system installed in it.

What is the best / easiest way to go about it? I'm not a system expert or anything, just an ordinary user who can install Ubuntu alongside Windows and enjoy computing and coding on Ubuntu.

I recently switched from gnome to i3 and was wondering how to change my color theme. I want to set a custom bg and text color as well as font. I have the yaru-dark theme using an app called "Customize look and feel", although I was able to change it to the same theme using another app called "GTK Ch-theme".

The issue is that I can't change it to custom colors. I want to change the grey color to black. When I try to do this using the "Customize look and feel" app, there is an option to do this. However, the option is disabled and I need to install lxsessions and change my current window manager for that, which I don’t want to. How can I set a custom theme without switching to LXDE?

In order to fix some driver nvidia gpu issue with steam, I tried installing libwayland as suggested in a forum, sudo apt-get install libwayland-client0:i386. Now I was running a 64 bit Ubuntu 18.04 LTS and while the installation was going on, I noticed that it started removing packages. By the time it finished, it removed a bunch of packages, and now i dont even have vim or nautilus installed. I am still not sure what libwayland does, and what it replaced in the original Ubuntu 18.04. I just want back my applications which come with the default ubuntu installation. I tried following instructions to fix broken ubuntu installation in https://www.ostechnix.com/how-to-fix-broken-ubuntu-os-without-reinstalling-it/ but running sudo apt install -f just shows me a list of packages that are no longer required and suggests that I remove them with autoremove.

Any suggestions on how to restore my Ubuntu? I still have access to my data and the desktop environment but I don't think tracking down every package that comes with 18.04 and installing with apt-get is a feasible option.

I checked the file in /var/log/apt and it had a huge list of the packages that were removed, including basic packages like gedit etc. I have the list, but is there any way to reinstall all these without doing them one-by-one manually?

I am new to netplan and advanced linux networking in general so I am hoping someone might be able to help me figure out my problem.

I have two machines, an unraid nas and an ubuntu 18.04 server. Each machine has two ethernet network interfaces. I'm trying to use one interface on each machine to connect them to my LAN while using the other interfaces to connect them directly to each other with a crossover cable.

My machines are setup as follows

Unraid

• eth0 > LAN, DHCP, 192.168.1.x
• eth1 > Direct, Static, 10.0.0.1/24

Ubuntu

• enp2s0 > LAN , DHCP , 192.168.1.x
• enp3s5 > Direct, Static, 10.0.0.2/24

I managed to get the machine to connect to each other using this netplan config on the Ubuntu server.

network:
  version: 2
  renderer: networkd
  ethernets:
    enp2s0:
      dhcp4: yes
    enp3s5:
      dhcp4: no
      addresses:
        - 10.0.0.2/24
      gateway4: 10.0.0.2

This seemed to work until I tried to ssh into my ubuntu server from the internet. I have port forwarding set up on my LAN's router and have been successfully using this setup for months. With this now failing, I went and did some research and ran route -n on my ubuntu server which gave me the following output.

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use 
Iface
0.0.0.0         10.0.0.2        0.0.0.0         UG    0      0        0 enp3s5
0.0.0.0         192.168.1.1     0.0.0.0         UG    100    0        0 enp2s0
10.0.0.0        0.0.0.0         255.255.255.0   U     0      0        0 enp3s5
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 enp2s0
192.168.1.1     0.0.0.0         255.255.255.255 UH    100    0        0 enp2s0

From what little I've learned, it seems my machine will use the gateway 10.0.0.2 to try and answer requests outside the LAN's subnet because it has a lower metric value. This would explain why I could not ssh into this machine from outside my network as only my LAN has internet access.

My first thought is to define a larger metric value to enp3s5. Is this the right way to do this? Or do I have this wrong?

Any help would be really appreciated.

Today I decided I would install Ubuntu 16.04 alongside my Windows 10 in a dual boot system. After installing everything, I decided to install Discord to talk with some friends, then I noticed that my microphone wasn't working. I thought that there may be a problem with my Discord install, but there isn't after I checked that my microphone wasn't working in many more programs (including System Settings -> Sound where no sound was showing up).

I also have to mention that my sound is working completely fine. It's just the mic that's not working. The microphone is part of my headset (CREATIVE Sound BlasterX H7).

I checked all the forums and tried many different solutions. Some of them were:

• Checking that the microphone isn't muted (it isn't);

• Checking my settings in the pavucontrol panel. Trying to split the channels and lowering each channel at a time to check if the mic will work after that.

• Looking at the Configuration panel in pavucontrol and setting it to Analog Stereo Duplex

• Looking at the alsamixer and checking that the mic isn't muted (look at the pictures below) [I may have overlooked this step]

• Trying to install a new vivid alsa dkms driver

• Restarting the audio drivers

I am 100% sure my microphone is functioning, since I can use it without any problems on Windows 10 or on any other machine.

Imporant specs [since there may be a problem with my computer's drivers]:

i7-6700k Skylake / z170x gaming 7 Gigabyte / 2 monitors each having its own speakers

Here you can see all the audio devices:

➜  ~ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: CA0132 Analog [CA0132 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: CA0132 Digital [CA0132 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

I am following the instructions on RunningKVM.

My host runs Ubuntu Server 14.04.1 (64 bit)

I downloaded the Ubuntu Server ISO file:

wget -c http://old-releases.ubuntu.com/releases/14.04.2/ubuntu-14.04.1-server-amd64.iso

And then I ran:

qemu-img create -f qcow2 vdisk.img 10G
qemu-system-x86_64 -hda vdisk.img -cdrom ubuntu-14.04.1-server-amd64.iso -boot d  -m 384

Error:

Could not initialize SDL(No available video device) - exiting

From what I understand, this is because I am not running it from X windows machine.

Then, after googling, I added -vga none and I ran:

qemu-system-x86_64 -vga none -hda vdisk.img -cdrom ubuntu-14.04.1-server-amd64.iso -boot d  -m 384

And again I got the same error.

Then I ran with -nographic:

qemu-system-x86_64 -nographic  -hda vdisk.img -cdrom ubuntu-14.04.1-server-amd64.iso -boot d  -m 384

And this was stuck without any error (I waited over 10 minutes). So I had to kill this process from a different machine.

What is the correct way to install when the host does not have x windows with this setup?

I have windows 10 on my laptop and I run Oracle VirtualBox with ubuntu 14.04.5 LTS 64 bit on it. I bought tp-link usb to wifi adapter - TL-WN821N v5.

I am try to connect the usb to the vm so it have wifi and wireless functionality in it. in vbox there is option to connect the usb direcly to the machine so the the windows 10 dont detect the usb.

lsusb detect the adapter:

Bus 001 Device 002: ID 2357:0107
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

but lshw -C network

 network
  *-network
       description: Ethernet interface
       product: 82540EM Gigabit Ethernet Controller
       vendor: Intel Corporation
       physical id: 3
       bus info: pci@0000:00:03.0
       logical name: eth0
       version: 02
       serial: 08:00:27:bc:0d:35
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 66MHz
       capabilities: pm pcix bus_master cap_list ethernet physical 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 ip=10.0.0.13 latency=64 link=yes mingnt=255 multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:19 memory:f0000000-f001ffff ioport:d010(size=8)

and iwconfig

lo        no wireless extensions.

eth0      no wireless extensions.

wont seem to identify the new hardware:

I thought the problem is that need some driver - so I tried to install the driver: http://www.tp-link.com/en/download/TL-WN821N.html#Driver but make give me syntax errors (and i think there easier way)

I followed this link DLink DWA 131 wireless adapter not working on ubuntu 15.10 and when i run apt-get install rtl8192eu-dkms I get this:

Reading package lists... Done
Building dependency tree
Reading state information... Done
rtl8192eu-dkms is already the newest version.
The following packages were automatically installed and are no longer required:
  culmus linux-headers-3.13.0-32 linux-headers-3.13.0-32-generic
  linux-image-3.13.0-32-generic linux-image-extra-3.13.0-32-generic
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 12 not upgraded.

and it still dont work.

The laptop (and vm) connected to ethernet directly.

kernal version- 4.4.0-45-generic

thank you for help!

How can i set intel idle max cstate to 1 and how can i check when it will done. i have a freeze problem because of bay trail cores.

i tried kernel 4.5 4.1.12 4.4 but freeze problem still continue. at the moment 4.4 is my kernel version.

My brother installed Ubuntu on my windows 10 toshiba laptop. At first it was great, but now I can only access the guest session, and can't access the full capability of Ubuntu. I work with my laptop and I'm new to this so any kind of advice or help would be genuinely appreciated. Thank you!

I've been looking around for hours to find a driver or a solution to get my wifi working on my new laptop (Acer Aspire V 17 nitro).

But without success.

I have a fresh Ubuntu 14.04 Installed,

This is the result i get from lspci -vnn | grep Network

Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 20)

I have been googling for hours, is there no solution ?

Will I have to get a usb wifi adaptor and get a wifi connection like that ?

When I boot up, I sometimes go into tty, execute a few commands and then have to restart the GUI (gmd) with

sudo service restart gdm

I then go to the GUI (Alt+F7) and have to login.

Occasionally, it freezes up after logging in, and I go through the process again. Is there any way of starting the GUI and loggining in, for example

sudo service gdm restart --login myname

then it would ask for password (like sudo does).

And rather than me switch to GUI then login, I would switch to GUI and everything would be running.

I have tried using ap-hotspot from WebUpd8, and it did not work for me in 13.10 or 14.04, so I have been working on getting hostapd manually set up, using isc-dhcp-server since dnsmasq was having conflicts for me. I have been able to connect to the AP, and get an IP, but routing does not seem to want to work. Here is my build log and the guides I have been following:

• https://askubuntu.com/a/180734/279108
• http://thenewbieblog.wordpress.com/2012/05/01/wifi-hotspot-setup-on-ubuntu/
• http://danbishop.org/2011/12/11/using-hostapd-to-add-wireless-access-point-capabilities-to-an-ubuntu-server/

Config files:

/etc/network/interfaces:

auto lo
iface lo inet loopback
auto wlan0
iface wlan0 inet static
hostapd -dd /etc/hostapd/hostapd.conf
address 10.10.0.1
netmask 255.255.255.0

/etc/default/hostapd:

RUN_DAEMON="yes"
DAEMON_CONF="/etc/hostapd/hostapd.conf"
DAEMON_OPTS="-dd"

/etc/hostapd/hostapd.conf:

# WiFi Hotspot
interface=wlan0
driver=nl80211
#Access Point
ssid=workshop
hw_mode=g
# WiFi Channel:
channel=1
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=mypass
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP

/etc/dhcp/dhcpd.conf:

ddns-update-style none;
#default-lease-time 600;
#max-lease-time 7200;
log-facility local7;
subnet 10.10.0.0 netmask 255.255.255.0 {
    range 10.10.0.2 10.10.0.32;
    option domain-name-servers 208.67.222.222, 208.67.220.220;
    option routers 10.10.0.1;
}

/etc/rc.local:

iptables -t nat -A POSTROUTING -s 10.10.0.0/32 -o eth1 -j MASQUERADE
exit 0

The following commands were run:

sudo ifconfig wlan0 10.10.0.1
sudo sysctl net.ipv4.ip_forward=1
sudo ip link set dev wlan0 up
sudo service hostapd start

I have installed bridge-utils, but I have not added br0 yet because I am not sure how to change the other parts of my config to reflect it...

Edit: After double checking my configs through another (older) guide, tried again and decided to add what shows up in the logs when something connects. The device connecting is my android phone, which connects fine through normal routers.

(I understand most of what is going on in the logs, and startup looks fine. Then scrolling randomness...)

Add randomness: count=52 entropy=51
mgmt::auth
authentication: STA=a0:f4:50:18:a2:c3 auth_alg=0 auth_transaction=1 status_code=0 wep=0
  New STA
wlan0: STA a0:f4:50:18:a2:c3 IEEE 802.11: authentication OK (open system)
wlan0: STA a0:f4:50:18:a2:c3 MLME: MLME-AUTHENTICATE.indication(a0:f4:50:18:a2:c3, OPEN_SYSTEM)
wlan0: STA a0:f4:50:18:a2:c3 MLME: MLME-DELETEKEYS.request(a0:f4:50:18:a2:c3)
authentication reply: STA=a0:f4:50:18:a2:c3 auth_alg=0 auth_transaction=2 resp=0 (IE len=0)
Add randomness: count=53 entropy=52
mgmt::auth cb
wlan0: STA a0:f4:50:18:a2:c3 IEEE 802.11: authenticated
mgmt::assoc_req
association request: STA=a0:f4:50:18:a2:c3 capab_info=0x431 listen_interval=20
  new AID 1
wlan0: STA a0:f4:50:18:a2:c3 IEEE 802.11: association OK (aid 1)
Add randomness: count=54 entropy=53
mgmt::assoc_resp cb
wlan0: STA a0:f4:50:18:a2:c3 IEEE 802.11: associated (aid 1)
wlan0: STA a0:f4:50:18:a2:c3 MLME: MLME-ASSOCIATE.indication(a0:f4:50:18:a2:c3)
wlan0: STA a0:f4:50:18:a2:c3 MLME: MLME-DELETEKEYS.request(a0:f4:50:18:a2:c3)
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=0x9f8ac90 key_idx=0 set_tx=1 seq_len=0 key_len=0
   addr=a0:f4:50:18:a2:c3
wlan0: STA a0:f4:50:18:a2:c3 WPA: event 1 notification
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=0x9f8ac90 key_idx=0 set_tx=1 seq_len=0 key_len=0
   addr=a0:f4:50:18:a2:c3
IEEE 802.1X: Ignore STA - 802.1X not enabled or forced for WPS
wlan0: STA a0:f4:50:18:a2:c3 WPA: start authentication
WPA: a0:f4:50:18:a2:c3 WPA_PTK entering state INITIALIZE
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=0x9f8ac90 key_idx=0 set_tx=1 seq_len=0 key_len=0
   addr=a0:f4:50:18:a2:c3
wlan0: STA a0:f4:50:18:a2:c3 IEEE 802.1X: unauthorizing port
WPA: a0:f4:50:18:a2:c3 WPA_PTK_GROUP entering state IDLE
WPA: a0:f4:50:18:a2:c3 WPA_PTK entering state AUTHENTICATION
WPA: a0:f4:50:18:a2:c3 WPA_PTK entering state AUTHENTICATION2
WPA: Re-initialize GMK/Counter on first station
Get randomness: len=32 entropy=54
GMK - hexdump(len=32): [REMOVED]
Get randomness: len=32 entropy=22
Key Counter - hexdump(len=32): [REMOVED]
Get randomness: len=16 entropy=0
GTK - hexdump(len=16): [REMOVED]
wpa_driver_nl80211_set_key: ifindex=3 alg=3 addr=0x80dd6be key_idx=1 set_tx=1 seq_len=0 key_len=16
   broadcast key
WPA: Assign ANonce - hexdump(len=32): 12 53 6f 26 8a a3 87 09 b4 31 e2 81 ef c3 ea 3e 6c 3d 0c a5 fb 85 07 f2 0a 2a 4a 5e a2 00 59 e9
WPA: a0:f4:50:18:a2:c3 WPA_PTK entering state INITPSK
WPA: a0:f4:50:18:a2:c3 WPA_PTK entering state PTKSTART
wlan0: STA a0:f4:50:18:a2:c3 WPA: sending 1/4 msg of 4-Way Handshake
WPA: Send EAPOL(version=2 secure=0 mic=0 ack=1 install=0 pairwise=8 kde_len=0 keyidx=0 encr=0)
WPA: Use EAPOL-Key timeout of 100 ms (retry counter 1)
nl80211: Event message available
nl80211: New station a0:f4:50:18:a2:c3
IEEE 802.1X: a0:f4:50:18:a2:c3 TX status - version=2 type=3 length=95 - ack=1
WPA: EAPOL-Key TX status for STA a0:f4:50:18:a2:c3 ack=1
WPA: Increase initial EAPOL-Key 1/4 timeout by 1000 ms because of acknowledged frame
IEEE 802.1X: 121 bytes from a0:f4:50:18:a2:c3
   IEEE 802.1X: version=1 type=3 length=117
WPA: Received EAPOL-Key from a0:f4:50:18:a2:c3 key_info=0x10a type=2 key_data_length=22
WPA: Received Key Nonce - hexdump(len=32): 7c 4d 99 9f 10 56 93 84 a9 8a f8 15 d8 8e 1e 6d 2f 39 95 8f bc 99 9a 4c 06 3d 37 65 e6 db 49 fa
WPA: Received Replay Counter - hexdump(len=8): 00 00 00 00 00 00 00 01
Add randomness: count=55 entropy=0
wlan0: STA a0:f4:50:18:a2:c3 WPA: received EAPOL-Key frame (2/4 Pairwise)
WPA: a0:f4:50:18:a2:c3 WPA_PTK entering state PTKCALCNEGOTIATING
WPA: PTK derivation - A1=90:4c:e5:55:94:4d A2=a0:f4:50:18:a2:c3
WPA: Nonce1 - hexdump(len=32): 12 53 6f 26 8a a3 87 09 b4 31 e2 81 ef c3 ea 3e 6c 3d 0c a5 fb 85 07 f2 0a 2a 4a 5e a2 00 59 e9
WPA: Nonce2 - hexdump(len=32): 7c 4d 99 9f 10 56 93 84 a9 8a f8 15 d8 8e 1e 6d 2f 39 95 8f bc 99 9a 4c 06 3d 37 65 e6 db 49 fa
WPA: PMK - hexdump(len=32): [REMOVED]
WPA: PTK - hexdump(len=48): [REMOVED]
WPA: a0:f4:50:18:a2:c3 WPA_PTK entering state PTKCALCNEGOTIATING2
WPA: a0:f4:50:18:a2:c3 WPA_PTK entering state PTKINITNEGOTIATING
wlan0: STA a0:f4:50:18:a2:c3 WPA: sending 3/4 msg of 4-Way Handshake
WPA: Send EAPOL(version=2 secure=1 mic=1 ack=1 install=1 pairwise=8 kde_len=46 keyidx=1 encr=1)
Plaintext EAPOL-Key Key Data - hexdump(len=56): [REMOVED]
WPA: Use EAPOL-Key timeout of 100 ms (retry counter 1)
IEEE 802.1X: a0:f4:50:18:a2:c3 TX status - version=2 type=3 length=151 - ack=1
WPA: EAPOL-Key TX status for STA a0:f4:50:18:a2:c3 ack=1
IEEE 802.1X: 99 bytes from a0:f4:50:18:a2:c3
   IEEE 802.1X: version=1 type=3 length=95
WPA: Received EAPOL-Key from a0:f4:50:18:a2:c3 key_info=0x30a type=2 key_data_length=0
WPA: Received Key Nonce - hexdump(len=32): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
WPA: Received Replay Counter - hexdump(len=8): 00 00 00 00 00 00 00 02
wlan0: STA a0:f4:50:18:a2:c3 WPA: received EAPOL-Key frame (4/4 Pairwise)
WPA: a0:f4:50:18:a2:c3 WPA_PTK entering state PTKINITDONE
wpa_driver_nl80211_set_key: ifindex=3 alg=3 addr=0x9f8ac90 key_idx=0 set_tx=1 seq_len=0 key_len=16
   addr=a0:f4:50:18:a2:c3
wlan0: AP-STA-CONNECTED a0:f4:50:18:a2:c3
wlan0: STA a0:f4:50:18:a2:c3 IEEE 802.1X: authorizing port
wlan0: STA a0:f4:50:18:a2:c3 RADIUS: starting accounting session 536C1843-00000000
wlan0: STA a0:f4:50:18:a2:c3 WPA: pairwise key handshake completed (RSN)
Add randomness: count=56 entropy=1

(more randomness, until I ctrl+c)

I would like to ask if i could run the normal pc ubuntu version on one of the new windows 8.1 tablets with the intel atom z3770 or z3740?

It is possible?

Would be nice, because the hardware and the price sounds great but windows 8 isn't it for me because i'm a open-source and diy guy.

Or

Are they cheapie convertible? I searched the web but didn't found a list with products working with ubuntu.

I would like to un-encrypt files that I had previously encrypted with Axcrypt. There does seem to be a Linux version on their website, but when I run it, I get Windows related errors, and when I run it with Wine I get that it is an invalid .exe format.

I don't really need to use the Axcrypt program, as long as I'm able to decrypt my text files I'm happy. I know Axcrypt uses AES encryption, so has anyone had any success decrypting an Axcrypt file with another AES encryption program?

While I'm waiting for responses, I'll start digging through the source code to see if I can find anything.

I'm on a new install of Lubuntu 12.04 on an Acer Aspire 5534 (specifications here, tl;dr: AMD dual-core 64bit) trying to install steam_latest.deb from the Steam website. When I open gdebi to install, it tells me that it's uninstallable because it's for a i386 architecture. I've tried installing ia32-libs (installed, no success), gdebi --add-architecture i386 (with and without --force, command unknown). This is all I've found to fix the problem, but none of it has worked for me. Any suggestions are welcome, thanks for your time.

I saw a QR code reading a book, but I don't have a smart phone to decode it.

So I just took a picture of it and saved the picture to my PC. I downloaded libdecoderqr0, libdecodeqr-dev, and libdecodeqr-examples for reading it. But I don't know how to use them.

What do I do next? Or is there a nicer way to read QR codes?