I have a problem with bluetooth on my laptop Lenovo R7000P with processor AMD 8945HX and Ubuntu 24.04.3 LTS.

I cant use bluetooth, it dont work. When i try to turn on bluetooth, the system dont give me possibility to push the button. I searched the entire Internet, and in the end, deepseek advice helped me: he wrote the following list of commands, which restarts the driver and really helps.

sudo modprobe -r btusb
sleep 2
sudo modprobe btusb
sudo systemctl restart bluetooth

But these commands need to be executed every time I restart the computer. I can automate this so that the file runs itself every time, but I don't like it, I want to fix the problem. I have dual-boot with windows, and bluetooth is running on windows. Please help me fix the bluetooth so that it works properly. Whatever I've done, I've been updating all the drivers and the system...
enter image description here

This has to be the most annoying glitch ever :( I have been using whatever latest updates given for 24.04 for two years without problem. Today (2026-02-12) it offered and I allowed upgrade to 6.17.0-14-generic. Now I find that, at least in certain windows/applications, the mouse click/position in text windows is "off". Basically whenever I click or drag it is treating the "current line" as the line above where the I-beam text cursor is. It may relate to the position of the very top pixel of the I-beam, not sure. Essentially to do any text/programming work I am having to click at where I want in the line below the one I want. After a few hours of trying to do this consistently I cannot carry on. For me this breaks the whole ability to use Ubuntu at all.

I have discovered that, via grub, I can revert for now to the previous version, 6.14.0-37-generic. That shows no bad behaviour, mouse clicks/I-beam positioning is correct and what is always has been. But that option will disappear after the next update, and I may then be stuck with the new "bad" behaviour.

I don't know whether my environment is relevant. In case it is:

• I run under VirtualBox (from Windows 11 host). But that has not changed in a long time.

• I have an NVidia graphics card. But the VB uses "VMSVGA" as "Graphics Controller" and does not have "3D Acceleration" enabled, does that make the NVidia gfx card irrelevant?

• I run the GNOME desktop under Xorg, not Wayland. (I have tried to test Wayland but, for whatever reason, if I pick that from the desktop logon screen instead of Xorg it still seems to go into Xorg and I haven't got more time to investigate that.)

• My programming work is done in Qt Creator. Both its editor and any Qt application I run are affected. I am not sure about whether, say, gedit shows same or not and I don't know what other applications to look at. I'm thinking it is not a Qt issue but cannot be certain.

Does anyone know what sort of updates in 6.17 might affect this area? E.g. I think I saw it updated "mesa" stuff, could that be implicated?

If anyone has any thoughts or suggestions I am listening. Otherwise if anyone else experiences similar please let me know here. I have no idea whether I am somehow alone in this or whether it will show up for other people.

UPDATE: It is possible this is, somehow, a Qt/Qt application issue. Which will obviously reduce the number of other people likely to experience it. It is hard to tell/be sure, but trying other text editors (with mouse) like gedit or PyCharm I am thinking they are not "off" under new kernel. I cannot imagine how a change to kernel would only affect Qt applications in this fashion, but who knows....

In 2005-2007 I had a mental break and was doing hard work easily. In a daw I was using an adjust feature for sampling. The idea I had in Winxp was crazy. I made a Regedit entry that made command prompt understand how to adjust bit rates to over one million bits, the only thing I remember was using the *-bits instead of 32-bits. What I found was crazy. The size of data shrinks as you adjust higher. Much like the length of audio shrinks as you adjust higher. I was wondering if anyone has ever found this out, and if there are programs that can take an architecture of an operating system and make the computer understand very small in size adjusted bitrate system processes. The reason being a 1,000 terabyte file can be shrunk to 1mb and sent over the web in one second. So the processing of the data if the computer understood the adjusted files as normal files, you would speed up the computer so that it could run one million copies of Halo Infinite on a budget pc at a time with no lag. Or maybe run Halo Infinite on an Atari 2600 that was made to run adjusted files. Thanks for letting me ask a off-topic question!

I am trying to share my screen from my laptop (Kubuntu 25.10, but the same issue on 24.04) to two different Miracast receivers: a TV and a dongle. Both receivers are usable from my Android mobile.

I fixed everything and debugged what I could. I can verify that I can establish a working connection using "gnome-network-devices" (which is said to work fine under KDE), but only a black screen is shared. It seems that capturing does not work on the kubuntu system.

I dug deeper and it seems that no pipewire source is created by KWin, apparently because support for that has not been compiled in. Which puzzles me.

Can someone explain to me or point me to information about why this feature has been disabled in Kubuntu? Or where I went wrong, what I might miss, what I could check?

I see this and if I understand correctly then the pipewire source is missing in there: :

> pactl list sinks short
56      alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI3__sink     PipeWire        s24-32le 2ch 48000Hz    SUSPENDED
57      alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI2__sink     PipeWire        s24-32le 2ch 48000Hz    SUSPENDED
58      alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI1__sink     PipeWire        s24-32le 2ch 48000Hz    SUSPENDED
59      alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Speaker__sink   PipeWire        s32le 2ch 48000Hz       SUSPENDED

And these deliver nothing :

strings /usr/bin/kwin_wayland | grep -i pipewire

ldd /usr/bin/kwin_wayland | grep pipewire

I've been running an Intel NUC11PAHi5 Mini PC on my local wired ethernet. I assume this has an Intel ethernet adapter. I am on Ubuntu 24.04.3 with kernel 6.17.0-14-generic.

Recently I noticed the wired ethernet no longer appears in the Ubuntu 24.04.3 Settings. I noticed this at some time after what appeared to be a very nearby lightning strike, so I suspect a hardware issue.

I'd like to ask for ideas as to further steps I should take to diagnose this issue and determine whether it is fixable. I have pretty rudimentary Linux skills, but so far I've tried lshw | grep -i Ethernet and ip link. These show my wireless adapter, but my wired ethernet is nowhere to be seen.

Last night my Dell 7590 on Ubuntu 24.04.3 LTS ran fine. This morning there was no network except lo and I didn’t do any updates.

ifconfig only shows lo running, but no other interfaces hard or WiFi. It’s hard to include much here because it can’t connect, so I can either add photos or hand type.

uname -a
Linux TreeClimberLap 6.17.0-14-generic #14~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Jan 15 15:52:10 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

I was able to get some information off of the computer to a USB and I'm uploading it here.

What drew my attention to this is that something went wrong with nvidia at the same time and without the network I couldn't solve it. It does appear that some quiet upgrade occurred. I just tried sudo apt autoremove, and here is the relevant error I see there. I wonder if they have a common root cause.

Setting up linux-modules-nvidia-570-6.17.0-14-generic (6.17.0-14.14~24.04.1+1) ...
linux-image-nvidia-6.17.0-14-generic: constructing .ko files
/usr/bin/ld.bfd: warning: --package-metadata is empty, ignoring
/usr/bin/ld.bfd: warning: --package-metadata is empty, ignoring
/usr/bin/ld.bfd: warning: --package-metadata is empty, ignoring
/usr/bin/ld.bfd: warning: --package-metadata is empty, ignoring
/usr/bin/ld.bfd: warning: --package-metadata is empty, ignoring
/usr/bin/ld.bfd: warning: --package-metadata is empty, ignoring
/usr/bin/ld.bfd: warning: --package-metadata is empty, ignoring
/usr/bin/ld.bfd: cannot open linker script file /usr/src/linux-headers-6.17.0-14-generic/scripts/module.lds: No such file or directory
/usr/bin/ld.bfd: cannot open linker script file /usr/src/linux-headers-6.17.0-14-generic/scripts/module.lds: No such file or directory
/usr/bin/ld.bfd: cannot open linker script file /usr/src/linux-headers-6.17.0-14-generic/scripts/module.lds: No such file or directory
/usr/bin/ld.bfd: cannot open linker script file /usr/src/linux-headers-6.17.0-14-generic/scripts/module.lds: No such file or directory
/usr/bin/ld.bfd: cannot open linker script file /usr/src/linux-headers-6.17.0-14-generic/scripts/module.lds: No such file or directory
sha256sum: nvidia-drm.ko: No such file or directory
nvidia-drm.ko: FAILED open or read
sha256sum: nvidia-modeset.ko: No such file or directory
nvidia-modeset.ko: FAILED open or read
sha256sum: nvidia-peermem.ko: No such file or directory
nvidia-peermem.ko: FAILED open or read
sha256sum: nvidia-uvm.ko: No such file or directory
nvidia-uvm.ko: FAILED open or read
sha256sum: nvidia.ko: No such file or directory
nvidia.ko: FAILED open or read
sha256sum: WARNING: 5 listed files could not be read
dpkg: error processing package linux-modules-nvidia-570-6.17.0-14-generic (--configure):
 installed linux-modules-nvidia-570-6.17.0-14-generic package post-installation script subprocess returned error exit status 1
dpkg: dependency problems prevent configuration of linux-modules-nvidia-570-generic-hwe-24.04:
linux-modules-nvidia-570-generic-hwe-24.04 depends on linux-modules-nvidia-570-6.17.0-14-generic (= 6.17.0-14.14~24.04.1+1); however:
Package linux-modules-nvidia-570-6.17.0-14-generic is not configured yet.

dpkg: error processing package linux-modules-nvidia-570-generic-hwe-24.04 (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                         Errors were encountered while processing:
linux-modules-nvidia-570-6.17.0-14-generic
linux-modules-nvidia-570-generic-hwe-24.04
E: Sub-process /usr/bin/dpkg returned an error code (1)

So, from this I think I need the kernel headers. So I downloaded and tried to install them (a pain with a USB drive and a Windows machine to do the downloads).

linux-headers-6.17.0-14_6.17.0-14.14_all.deb
linux-headers-6.17.0-14-generic_6.17.0-14.14_amd64.deb
linux-hwe-6.17-headers-6.17.0-14_6.17.0-14.14~24.04.1_all.deb

When I installed them it said the gcc version used for v4l was different than what was installed. It was built with gcc 15.2 and I have 13 something. It looks like getting that installed is not easy. I'm really puzzled how this went so wrong. There must be a lot of people out there with similar problems.

On the original thread, however, here is more info:

In dmesg a search for iwl returns nothing, netw only returns one hit and this is the context:

[    0.578040] intel_pstate: Intel P-state driver initializing
[    0.580367] intel_pstate: Disabling energy efficiency optimization
[    0.580368] intel_pstate: HWP enabled
[    0.580505] simple-framebuffer simple-framebuffer.0: [drm] Registered 1 planes with drm panic
[    0.580508] [drm] Initialized simpledrm 1.0.0 for simple-framebuffer.0 on minor 0
[    0.586525] fbcon: Deferring console take-over
[    0.586528] simple-framebuffer simple-framebuffer.0: [drm] fb0: simpledrmdrmfb frame buffer device
[    0.586775] drop_monitor: Initializing network drop monitor service
[    0.586879] NET: Registered PF_INET6 protocol family
[    0.587325] Segment Routing with IPv6
[    0.587332] In-situ OAM (IOAM) with IPv6
[    0.587347] NET: Registered PF_PACKET protocol family
[    0.587475] Key type dns_resolver registered
[    0.588397] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
[    0.588798] microcode: Current revision: 0x000000fa
[    0.589237] IPI shorthand broadcast: enabled
[    0.591020] sched_clock: Marking stable (578001006, 12692452)->(650048205, -59354747)
[    0.591302] registered taskstats version 1

uname -a
Linux TreeClimberLap 6.17.0-14-generic #14~24.04.1-Ubuntu SMP PREEMPT\_DYNAMIC Thu Jan 15 15:52:10 UTC 2 x86\_64 x86\_64 x86\_64 GNU/Linux

sudo nmcli device
DEVICE  TYPE      STATE                   CONNECTION 
lo      loopback  connected (externally)  lo         

service NetworkManager status

● NetworkManager.service - Network Manager
Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; preset: enabled)
;    Active: active (running) since Wed 2026-02-11 14:38:02 EST; 58min ago
Docs: man:NetworkManager(8)
Main PID: 1217 (NetworkManager)
Tasks: 4 (limit: 37915)
Memory: 16.4M (peak: 33.9M)
CPU: 409ms
CGroup: /system.slice/NetworkManager.service
└─1217 /usr/sbin/NetworkManager --no-daemon
Feb 11 14:38:02 TreeClimberLap NetworkManager[1217]:   [1770838682.2954] device (lo): state change: prepare -> config (reason 'none', sys-iface-state: 'external')
Feb 11 14:38:02 TreeClimberLap NetworkManager[1217]:   [1770838682.2957] device (lo): state change: config -> ip-config (reason 'none', sys-iface-state: 'external')
Feb 11 14:38:02 TreeClimberLap NetworkManager[1217]:   [1770838682.2960] device (lo): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'external')
Feb 11 14:38:02 TreeClimberLap NetworkManager[1217]:   [1770838682.2974] modem-manager: ModemManager available
Feb 11 14:38:02 TreeClimberLap NetworkManager[1217]:   [1770838682.2978] device (lo): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'external')
Feb 11 14:38:02 TreeClimberLap NetworkManager[1217]:   [1770838682.2980] device (lo): state change: secondaries -> activated (reason 'none', sys-iface-state: 'external')
Feb 11 14:38:02 TreeClimberLap NetworkManager[1217]:   [1770838682.2984] device (lo): Activation: successful, device activated.
Feb 11 14:38:02 TreeClimberLap NetworkManager[1217]:   [1770838682.2987] manager: startup complete
Feb 11 14:38:23 TreeClimberLap NetworkManager[1217]:   [1770838703.9352] agent-manager: agent[b4d889c0df790dd6,:1.51/org.gnome.Shell.NetworkAgent/120]: agent registered
Feb 11 14:38:30 TreeClimberLap NetworkManager[1217]:   [1770838710.7145] agent-manager: agent[d49ef0ec152592c5,:1.83/org.gnome.Shell.NetworkAgent/1000]: agent registered

lspci -knn | grep Net -A2
3b:00.0 Network controller \[0280]: Intel Corporation Wi-Fi 6 AX200 \[8086:2723] (rev 1a)
    Subsystem: Rivet Networks Killer Wi-Fi 6 AX1650x (AX200NGW) \[1a56:1654]
3c:00.0 Unassigned class \[ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader \[10ec:525a] (rev 01)
    Subsystem: Dell RTS525A PCI Express Card Reader \[1028:0905]

I recently cleared my laptop of Windows and installed Ubuntu Budgie 24.04.3 LTS. It is a 2018 Razer Blade 15 Adv. I have two problems.

1. I installed OpenRazer, which also includes enrolling a MOK. It seems to randomly forget the MOK. It cannot load OpenRazer until I re-enroll the MOK again. Is there something that would remove the MOK automatically?

2. Sometimes the system will lock up tight and I have to force reboot. The special key (PrtSc) to talk directly to the kernel doesn't work to reboot. I have to force power off. The special key works when not frozen. Also with this comes the MOK being removed from the boot and OpenRazer not loading. Where would I look to figure out what is causing these lock ups? I have checked the logs, but nothing jumps out.

1. System Information

   GPU: NVIDIA RTX 5090 (Blackwell Architecture)
   CUDA Version: 12.8 (WSL2 Ubuntu 24.04)
   NVIDIA Driver Version: 572.16
   TensorFlow Version: 25.01 (TF 2.17.0)
   WSL Version: WSL2 (Ubuntu 24.04.2 LTS, Kernel 5.15.167.4-microsoft-standard-WSL2)
   Docker Version: 26.1.3 (Ubuntu 24.04)
   NVIDIA Container Runtime: Installed and enabled
   **NVIDIA-SMI Output (WSL2 Host)
   nvidia-smi
   ±----------------------------------------------------------------------------+
   | NVIDIA-SMI 570.86.16 Driver Version: 572.16 CUDA Version: 12.8 |
   |-------------------------------±---------------------±---------------------+
   | GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
   | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
   | | MIG M. |
   |===============================+======================+======================|
   | 0 NVIDIA GeForce RTX 5090 | 00000000:01:00.0 Off | N/A |
   | 54% 50C P8 33W / 575W | 2251MiB / 32607MiB | 1% Default |
   ±------------------------------±---------------------±---------------------+
   

2. Issue Description

   I am trying to run TensorFlow 25.01 inside a Docker container on WSL2 (Ubuntu 24.04) with CUDA 12.8 and an RTX 5090 GPU. However, TensorFlow does not detect the GPU, and I consistently get the following error when running:

   docker run --gpus all --shm-size=1g --ulimit memlock=-1 --rm -it nvcr.io/nvidia/tensorflow:25.01-tf2-py3
   

   Error Message

   ERROR: The NVIDIA Driver is present, but CUDA failed to initialize.
   GPU functionality will not be available.
   [[ Named symbol not found (error 500) ]]
   

   Additionally, running TensorFlow inside the container:

   python3 -c "import tensorflow as tf; print(tf.config.list_physical_devices(‘GPU’))"
   

   Returns:

3. Debugging Steps Taken :white_check_mark: Checked CUDA Installation inside WSL2 nvcc is installed and works fine

   nvcc --version

   nvcc: NVIDIA (R) Cuda compiler Copyright (c) 2005-2025 NVIDIA Corporation Built on Wed_Jan_15_19:20:00_PST_2025 Cuda compilation tools, release 12.8, V12.8.61

NVIDIA Container Runtime is installed

nvidia-container-cli --load-kmods info

NVRM version: 572.16
CUDA version: 12.8
Device: 0
GPU UUID: GPU-0b34a9a4-4b3c-ecec-f2e-fced5f2e0a0f
Architecture: 12.0

:white_check_mark: Checked Docker NVIDIA Settings

/etc/docker/daemon.json contains:
{
“runtimes”: {
“nvidia”: {
“path”: “nvidia-container-runtime”,
“args”: 
}
},
“default-runtime”: “nvidia”
}

Restarted Docker:

sudo systemctl restart docker

Checked CUDA Inside TensorFlow Container

Inside the running container:

ls -l /usr/local/cuda*
ls -l /usr/lib/x86_64-linux-gnu/libcuda*

Results:

/usr/local/cuda-12.8 exists
/usr/lib/x86_64-linux-gnu/libcuda.so is missing
$LD_LIBRARY_PATH inside the container does not include /usr/local/cuda-12.8/lib64

Tried explicitly mounting CUDA libraries:

docker run --gpus all --runtime=nvidia --shm-size=1g --ulimit memlock=-1 --rm -it
-v /usr/local/cuda-12.8:/usr/local/cuda-12.8
-v /usr/lib/x86_64-linux-gnu/libcuda.so:/usr/lib/x86_64-linux-gnu/libcuda.so
nvcr.io/nvidia/tensorflow:25.01-tf2-py3

Same error occurs.

Tested Running CUDA Sample Inside the container:

cuda-device-query

Results:

CUDA Error: Named symbol not found (error 500)

4. Potential Issues

   CUDA 12.8 might not be correctly mapped into the TensorFlow container. The container might be expecting a different CUDA runtime version or missing symbolic links.

   • Solution Tried: Explicitly mounted /usr/local/cuda-12.8 → Still failed. NVIDIA driver 572.16 might not be fully compatible with the TensorFlow 25.01 container.

   The official TensorFlow 25.01 Release Notes recommend a driver 535+, but it is unclear if 572.16 is supported.

   • Solution Tried: Tried setting different NVIDIA drivers inside the container → Still failed. Container does not have proper permissions to access GPU drivers.

   • Solution Tried: Checked NVIDIA runtime settings and /etc/docker/daemon.json → Still failed.

5. Questions for NVIDIA Developers / TensorFlow Team

   • Is CUDA 12.8 fully supported inside the TensorFlow 25.01 container?

   • Does TensorFlow 25.01 support NVIDIA Driver 572.16, or should I downgrade to 545.x or 535.x?

   • Are there any additional configurations required to properly map CUDA inside the TensorFlow container?

   • Has anyone successfully run TensorFlow 25.01 + CUDA 12.8 + RTX 5090 inside WSL2?

6. Additional Debugging Information

   If requested, I can provide:

   • Full logs from running TensorFlow

   • Output of nvidia-smi, nvcc --version, ls -l /usr/local/cuda* inside the container and Docker logs.

i like to do the same thing like that:

Increase number of old kernels to keep on autoremove

but in ubuntu 22.04 i cant find "apt-auto-removal" file.

thanks nir

update: this is the content of this dir

dir content

and i have "01autoremove" file and this is what i have inside

/etc/apt/apt.conf.d$ cat 01autoremove

01autoremove file content

do you know what do i need to change?

In Ubuntu Mate 21.04 suspending with sudo pm-suspend works perfectly. But using the power button does not work.

The dialog Power Management Preferences shows When the power button is pressed: Suspend, but nothing happens when I press the power button.

When I change the value to Ask me, the dialog where one can choose to shut down or suspend pops up, and thus I know that the button itself works. However, when I choose Suspend in this dialog, again nothing happens.

I have already searched the related values in dconf-editor, but without success.

Question: Which command does Mate launch on suspend and how can I change it to pm-suspend?

JPEG XL (.jxl) is the next-generation, general-purpose image compression codec by the JPEG committee (more info you can find on jpegxl.info). Which apps/programs can open and convert it?

I am running Kubuntu 20.04 Lts on Macbook Pro early 2015 edition and have tried a few other gnome and kde distros, all has the same problem of bluetooth being missing after restart. Sometimes it shows up but more often doesn't.

The systemctl bluetooth status is always as active but in the settings it shows like no bluetooth adapter found

$ systemctl status bluetooth
● bluetooth.service - Bluetooth service
     Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: ena>
     Active: active (running) since Mon 2020-08-31 07:59:52 IST; 10min ago
       Docs: man:bluetoothd(8)
   Main PID: 1106 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 9331)
     Memory: 1.9M
     CGroup: /system.slice/bluetooth.service
             └─1106 /usr/lib/bluetooth/bluetoothd

Aug 31 07:59:52 abubk-MBP systemd[1]: Starting Bluetooth service...
Aug 31 07:59:52 abubk-MBP bluetoothd[1106]: Bluetooth daemon 5.53
Aug 31 07:59:52 abubk-MBP systemd[1]: Started Bluetooth service.
Aug 31 07:59:52 abubk-MBP bluetoothd[1106]: Starting SDP server
Aug 31 07:59:52 abubk-MBP bluetoothd[1106]: Bluetooth management interface 1.14 initial>

System Settings:

lspci | grep Bluetooth doesn't give any results.

I bought a new Lenovo laptop and installed Ubuntu 20.04 using a bootable USB.

While the setup screen did not ask for WiFi and the third-party checkbox was disabled, it could not be selected.

When the installation was finished, it showed "No wifi adapter found" when trying to connect. I can connect to the internet through mobile phone tethering.

This is the output when entering rfkill list all in the terminal:

0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: yes
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: yes
    Hard blocked: no

I tried this solution, but it said: error focal release not found.

What should I do so WiFi can work?

Screenshot of lspci -nnk | grep -iA3 net:

Results of sudo apt-get install rtl8821ce-dkms:

## majstor@majstors:~$ sudo apt-get install rtl8821ce-dkms   
[sudo] password for majstor:   
Reading package lists... Done 
Building dependency tree
Reading state information... Done 
The following additional packages will be installed:  
  dkms 
Suggested packages:  
  menu 
The following NEW packages will be installed:  
  dkms rtl8821ce-dkms 
0 upgraded, 2 newly installed, 0 to remove and 39 not upgraded. 
Need to get 2.263 kB of archives. 
After this operation, 25,5 MB of additional disk space will be used.  
Do you want to continue? [Y/n] y 
Get:1 [http://hr.archive.ubuntu.com/ubuntu](https://www.google.com/search?q=http://hr.archive.ubuntu.com/ubuntu) focal/main amd64 dkms all 2.8.1-5ubuntu1 [66,6 kB] 
Get:2 [http://hr.archive.ubuntu.com/ubuntu](https://www.google.com/search?q=http://hr.archive.ubuntu.com/ubuntu) focal/universe amd64 rtl8821ce-dkms all 5.5.2.1-0ubuntu3 [2.196 kB] Fetched 2.263 kB in 9s (249 kB/s) 
Selecting previously unselected package dkms. 
(Reading database ... 185997 files and directories currently installed.) 
Preparing to unpack .../dkms_2.8.1-5ubuntu1_all.deb ...  
Unpacking dkms (2.8.1-5ubuntu1) ... 
Selecting previously unselected package rtl8821ce-dkms. 
Preparing to unpack .../rtl8821ce-dkms_5.5.2.1-0ubuntu3_all.deb ...   
Unpacking rtl8821ce-dkms (5.5.2.1-0ubuntu3) ... 
Setting up dkms (2.8.1-5ubuntu1) ... 
Setting up rtl8821ce-dkms (5.5.2.1-0ubuntu3) ... 
Loading new rtl8821ce-5.5.2.1 DKMS files... 
Building for 5.4.0-33-generic Building initial module for 5.4.0-33-generic 
Can't load /var/lib/shim-signed/mok/ .rnd into RNG 140224409204032:error:2406F079:random number generator:RAND_load_file:Cannot open file:../crypto/rand/randfile.c:98:Filename=/var/lib/shim-signed/mok/.rnd Generating a RSA private key
 ......................................................................+++++  
.............................+++++ 
writing new private key to '/var/lib/shim-signed/mok/MOK.priv'

Secure Boot not enabled on this system.
Done.

rtl8821ce.ko:
Running module version sanity check.
  * Original module
    * No original module exists within this kernel
  * Installation
    * Installing to /lib/modules/5.4.0-33-generic/updates/dkms/

depmod....

DKMS: install completed.  
Processing triggers for man-db (2.9.1-1) ...  
majstor@majstors:~$  

It seems that the install went OK, but still WiFi is not enabled. I tried to restart my laptop, and still the adapter is not found.

After reinstalling python and ufw I get the following error:

user@machine:~$ sudo ufw status
Traceback (most recent call last):
  File "/usr/sbin/ufw", line 25, in <module>
    import ufw.frontend
ModuleNotFoundError: No module named 'ufw'

I have tried to reinstall ufw multiple times but I don't get it to work.

What I have noticed about pip is that sudo uses pip2 instead of pip3 but also uses python3 as python:

user@machine:~$ pip -V
pip 19.3.1 from /usr/local/lib/python3.8/site-packages/pip (python 3.8)
user@machine:~$ sudo pip -V
pip 19.3.1 from /usr/local/lib/python2.7/dist-packages/pip (python 2.7)
user@machine:~$ sudo -i
root@machine:~# pip -V
pip 19.3.1 from /usr/local/lib/python3.8/site-packages/pip (python 3.8)

user@machine:~$ python -V
Python 3.8.0
user@machine:~$ sudo python -V
Python 3.8.0
user@machine:~$ sudo -i
root@machine:~# python -V
Python 3.8.0

I am not sure if that causes the problems though.

Apt history:

apt remove --purge python3-pip # This broke ufw probably because --purge
apt remove python3
apt install python3 
apt remove python3 # Noticed outdated version, uninstall again and built from source afterwards
apt install python3-pip # Was done after building and installing python3 from source

sudo pip3 list:

Package    Version
---------- ---------
certifi    2019.9.11
chardet    3.0.4
idna       2.8
pip        19.3.1
requests   2.22.0
setuptools 41.2.0
urllib3    1.25.7

python3 -c 'import sys; print(sys.version); print(sys.path)':

3.8.0 (default, Dec  1 2019, 09:38:21)
[GCC 7.4.0]
['', '/usr/local/lib/python38.zip', '/usr/local/lib/python3.8', '/usr/local/lib/                                                      python3.8/lib-dynload', '/usr/local/lib/python3.8/site-packages']

ls /usr/lib/python3/dist-packages/ufw/

applications.py  backend_iptables.py  backend.py  common.py  frontend.py  __init__.py  parser.py  __pycache__  util.py

I have two AMD Graphics Cards on my system.

I am quite sure that the Radeon HD 7640G works better than Radeon HD 7500M/7600M Series.

I would just like to use only the 7640G and install proprietary driver from AMD site for the same.

Results of lspci -nn | grep -E 'VGA|Display':

00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7640G] [1002:9903]

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7500M/7600M Series] [1002:6840]

System Information:

It seems that avahi-daemon process, which is unknown to me, is using excessive amounts of CPU on my system

I have tried both htop and system monitor, and only htop show the CPU use. Screenshots are included below.

What can I do to make avahi-daemon behave?

Edit: The issue often occurs when playing the game Dota 2. I've been observing this for a week.

System monitor doesn't appear to show which process is consuming CPU, unlike htop.

As requested by @heynnema

I'm using Krita right now, and every single time I use the fill tool it keeps filling everything not just the space I want it to fill, even the parts that I do not want filled in and it's getting on my nerves. When I make a circle I want just the circle filled up but it keeps covering the whole canvas with the fill tool. What am I doing wrong?

At How to run Ubuntu 16.04 Desktop on QEMU? I have described in detail how to boot and install the desktop Ubuntu image on QEMU.

Now I wanted to do a similar setup for the server image to try keep things more minimal:

wget http://releases.ubuntu.com/18.04/ubuntu-18.04.1.0-live-server-amd64.iso

I have installed the server image with the GUI previously, and the setup seems to be text based, so I thought it might work.

But then, if I just add the usual:

-nographic -serial mon:stdio

as in:

qemu-system-x86_64 -cdrom ubuntu-18.04.1.0-live-server-amd64.iso \
  -drive file=ubuntu-18.04.1.0-live-server-amd64.img.qcow2,format=qcow2 \
  -enable-kvm   -m 2G   -smp 2   -vga virtio -nographic -serial mon:stdio

I just never get anything on the terminal serial.

I also tried to mount the image to see what was inside:

mkdir mydir
sudo mount ubuntu-18.04.1.0-live-server-amd64.iso mydir

to see what was inside, and:

cat mydir/boot/grub/grub.cfg

indicates that there is no console=ttyS0 option on the command line, which might explain why the terminal is empty.

I can't edit the ISO file however without first going into a GUI session, as it is mounted readonly.

I have already used the Cloud image previously, and it is great: Is there any prebuilt QEMU Ubuntu image(32bit) online? but I can't use it this time because I need GRUB for something (edit: nevermind, the cloud image does have GRUB, just it is hidden by default, see: How to get to the GRUB menu at boot-time using serial console? )

Related: How to get to the GRUB menu at boot-time using serial console? I managed to get GRUB to show on the terminal after changing the GRUB configuration with the GUI as shown in that thread.

Tested on an Ubuntu 16.04 host.

Today I did an upgrade from Ubuntu 18.04 LTS to 18.10. The update ran without any error message. After the update the sound settings just show "dummy output".

$ pacmd list-cards
2 card(s) available.
index: 0
name: <alsa_card.pci-0000_01_00.1>
driver: <module-alsa-card.c>
owner module: 7
properties:
    alsa.card = "2"
    alsa.card_name = "HDA NVidia"
    alsa.long_card_name = "HDA NVidia at 0xef080000 irq 17"
    alsa.driver_name = "snd_hda_intel"
    device.bus_path = "pci-0000:01:00.1"
    sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card2"
    device.bus = "pci"
    device.vendor.id = "10de"
    device.vendor.name = "NVIDIA Corporation"
    device.product.id = "0e1b"
    device.product.name = "GK107 HDMI Audio Controller"
    device.string = "2"
    device.description = "GK107 HDMI Audio Controller"
    module-udev-detect.discovered = "1"
    device.icon_name = "audio-card-pci"
profiles:
    output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5900, available: no)
    output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (priority 800, available: no)
    output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (priority 800, available: no)
    output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (priority 5700, available: no)
    output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (priority 600, available: no)
    output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (priority 600, available: no)
    off: Off (priority 0, available: unknown)
active profile: <off>
ports:
    hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
        properties:
            device.icon_name = "video-display"
    hdmi-output-1: HDMI / DisplayPort 2 (priority 5800, latency offset 0 usec, available: no)
        properties:
            device.icon_name = "video-display"
index: 1
name: <alsa_card.usb-Trust_Webcam_Trust_Webcam_Trust_Webcam-02>
driver: <module-alsa-card.c>
owner module: 8
properties:
    alsa.card = "1"
    alsa.card_name = "Trust Webcam"
    alsa.long_card_name = "Trust Webcam Trust Webcam at usb-0000:00:14.0-3, high speed"
    alsa.driver_name = "snd_usb_audio"
    device.bus_path = "pci-0000:00:14.0-usb-0:3:1.2"
    sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.2/sound/card1"
    udev.id = "usb-Trust_Webcam_Trust_Webcam_Trust_Webcam-02"
    device.bus = "usb"
    device.vendor.id = "0c45"
    device.vendor.name = "Microdia"
    device.product.id = "6340"
    device.product.name = "Camera"
    device.serial = "Trust_Webcam_Trust_Webcam_Trust_Webcam"
    device.form_factor = "webcam"
    device.string = "1"
    device.description = "Camera"
    module-udev-detect.discovered = "1"
    device.icon_name = "camera-web-usb"
profiles:
    input:analog-mono: Analog Mono Input (priority 7, available: unknown)
    off: Off (priority 0, available: unknown)
active profile: <input:analog-mono>
sources:
    alsa_input.usb-Trust_Webcam_Trust_Webcam_Trust_Webcam-02.analog-mono/#0: Camera Analog Mono
ports:
    analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: unknown)
        properties:
            device.icon_name = "audio-input-microphone"

lspci

$ lspci | grep -i audio
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
01:00.1 Audio device: NVIDIA Corporation GK107 HDMI Audio Controller (rev a1)

destailed lspci

$ sudo lspci -nnk |  grep -A2 Audio
00:1b.0 Audio device [0403]: Intel Corporation 8 Series/C220 Series 
  Chipset High Definition Audio Controller [8086:8c20] (rev 05)
  Subsystem: Hewlett-Packard Company 8 Series/C220 Series Chipset High Definition Audio Controller [103c:1905]
  Kernel driver in use: snd_hda_intel
  Kernel modules: snd_hda_intel
--
01:00.1 Audio device [0403]: NVIDIA Corporation GK107 HDMI Audio 
Controller [10de:0e1b] (rev a1)
  Subsystem: Hewlett-Packard Company GK107 HDMI Audio Controller [103c:094b]
  Kernel driver in use: snd_hda_intel
  Kernel modules: snd_hda_intel

Sound settings:

Additional Drivers:

I installed several Kali tools using the Katoolin script. After a while I tried to uninstall these tools, I was able to remove most of them but several apps won't uninstall using sudo apt-get remove <package name> command.

I get: E: Unable to locate package <package name>.

Also tried using sudo apt autoremove <package name> with same result.

I'm assuming the actual package installed under a different name from the one I'm seeing in the Applications window. How can I remove these packages or find their actual name?

I am new to Ubuntu and this has been an issue bugging me for a while. I read many many posts online but found none perfectly solves my problems here. I am using Ubuntu 16.04 LTS and I don't use WiFi.

Results of ifconfig -a (I configured the IP address manually).

ens33     Link encap:Ethernet  HWaddr 00:0c:29:91:57:64  
          inet addr:169.254.121.2  Bcast:169.254.255.255  Mask:255.255.0.0
          inet6 addr: fe80::b0ea:2843:4e65:7db7/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:173 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4080 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:49107 (49.1 KB)  TX bytes:254879 (254.8 KB)

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:8378 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8378 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1333181 (1.3 MB)  TX bytes:1333181 (1.3 MB)

Here is my output of lspci -knn | grep Eth -A2:

Here is my output to "/ect/network/interfaces": Screenshot for interfaces (I followed this website and edited my interfaces file but I still hadno luck. I left it what it is after editing)

Please let me know if any other outputs are needed to help diagnosis.

I did some digging around and found that the automatic clean-up for kernels is in /etc/kernel/postinst.d/apt-auto-removal and the file states:

# In the common case this results in two kernels saved (booted into the
# second-latest kernel, we install the latest kernel in an upgrade), but
# can save up to four. Kernel refers here to a distinct release, which can
# potentially be installed in multiple flavours counting as one kernel.

but that script is way above my head and I cannot easily find how autoclean anything but the last 4 kernels.

I am trying to setup a sftp account to a specific folder. I have created a group ftpaccess and user testuser with home directory as seen here:

sudo addgroup ftpaccess

sudo useradd -d /home/forge/mydomain.com/downloads -m testuser -g ftpaccess -s /bin/false

sudo passwd testuser

sudo chown root:root /home/forge/mydomain.com/downloads

sudo chmod 755 /home/forge/mydomain.com/downloads

Then I have created an transfers directory inside testuser home folder:

sudo mkdir /home/forge/mydomain.com/downloads/transfers

sudo chown testuser:ftpaccess /home/forge/mydomain.com/downloads/transfers

Then I have setup sshd_config like this (rules added to the end of file):

# SFTP account
Subsystem sftp internal-sftp
Match group ftpaccess
ChrootDirectory %h
X11Forwarding no
AllowTcpForwarding no
ForceCommand internal-sftp
PasswordAuthentication yes

Now trying to sftp with this user sftp testuser@localhost but I get error:

packet_write_wait: Connection to 127.0.0.1 port 22: Broken pipe
Couldn't read packet: Connection reset by peer

What am I doing wrong?

Information about networking:

rabab@rabab-Lenovo-Z50-70:~$ ifconfig eth0 up
eth0: ERROR while getting interface flags: No such device
rabab@rabab-Lenovo-Z50-70:~$ ifconfig eth0 up
eth0: ERROR while getting interface flags: No such device
rabab@rabab-Lenovo-Z50-70:~$ ifconfig eth0
eth0: error fetching interface information: Device not found
rabab@rabab-Lenovo-Z50-70:~$ ifconfig -a
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:2167 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2167 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:224295 (224.2 KB)  TX bytes:224295 (224.2 KB)

rabab@rabab-Lenovo-Z50-70:~$

All of the networks in my laptop have been removed suddenly, and I can't connect to the internet.

Results of lspci -nnk | grep 0200 -A2:

01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
    Subsystem: Lenovo Device [17aa:380b]
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]

Assuming that this feature is implemented in such an advanced text editor like gedit I want to jump from a line x with 0 < x < [# lines] and a column position y with 0 <= y <= [length of line] to the end or the beginning of the document and selected all characters from the random position (defined by x and y) to the end or beginning.

I tried CtrlShift(Alt)End/Pos1 (with () meaning tried with and without and / meaning all combinations left and right of it) with both NumLock turned on and off, but none worked.

I'm using gedit 3.10.4 on Ubuntu 15.10.

So everything was working fine after I changed some permissions of a folder inside /var/www/html. It was just a random project. IIRC I just did chmod u+x, that's it.

This created the whole mess, I suppose, i.e. when I open the PHP files now, they are returning blank pages.

Troubleshooting I have done so far:

1) Uninstalled and reinstalled complete LAMP stack.

2) phpinfo() is working fine.

3) Tried most of the Google solutions regarding permissions, which I'm sure have messed up my /var or at least /var/www permissions. Tried every set of secure or insecure permission set I found, but no gain.

4) /var/log/apache2/error.log - http://pastebin.com/hfztqt0C

5) Tried changing location of Apache directory from /var/www/html to /home/username/Documents/abc, but getting 403 Forbidden error. Now this is another problem, as I did apply some quick suggested permissions as per Google's results:

chgrp -R www-data /home/username/Documents
chmod -R 2750 /home/username/Documents

But it didn't work.

Please help me out, reinstalling Ubuntu is of course the last option, but I'd love to solve it by tinkering as it'd surely make me learn new things. If the /var/www doesn't get solved, then I want to make the Apache dir change work.

Thanks

I am trying to measure the core voltages of my cpu. I installed the lm-sensors, I ran the sensors-detect and I reply YES to all of the question. At the end of the sensors-detect I get:

To load everything that is needed, add this to /etc/modules:
#----cut here----
# Chip drivers
coretemp
#----cut here----
If you have some drivers built into your kernel, the list above will
contain too many modules. Skip the appropriate ones!
Do you want to add these lines automatically to /etc/modules? (yes/NO)y
Successful!
Monitoring programs won't work until the needed modules are
loaded. You may want to run 'service kmod start'
to load them.
Unloading i2c-dev... OK
Unloading i2c-i801... OK
Unloading cpuid... OK

when I run: "sudo service kmod start" I get: kmod stop/waiting

When I type sensors after these I can't find the core voltages. I only get the temperatures. Any ideas?

I'm having problems getting Ubuntu Gnome 14.04 to detect my G35 Logitech Headset. I've tried to plug it in and go to System_Settings/Sound but the device is not appearing in the output nor the input tab.

My speakers do appear and are working perfectly fine. Analog headphones are working as well.

lsusb prints:

Bus 002 Device 003: ID 0738:1708 Mad Catz, Inc. 
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 002: ID 046d:0a15 Logitech, Inc. 
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 002: ID 1ea7:2001  
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

To have a fresh installation I was told I need to format the partition it is on and simply reinstall Ubuntu. I am currently on a live CD and was going to format it, but apparently it's mounted so I can't format it.

I'm not sure what to do and I would like Ubuntu back without screwing something up. btw I dual booted it so I would also like to do this without screwing up my Windows partition.

GParted:

Results of lspci:

ubuntu@ubuntu:~$ sudo lspci
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port  
(rev 02)  
00:19.0 Ethernet controller: Intel Corporation 82577LM Gigabit Network Connection
(rev 05)
00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2  
Enhanced Host Controller (rev 05)  
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express  
Root Port 1 (rev 05)
00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express R
Root Port 2 (rev 05)
00:1c.2 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express  
Root Port 3 (rev 05)
00:1c.3 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express  
oot Port 4 (rev 05)
00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2  
Enhanced Host Controller (rev 05)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge  
(rev a5)  
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface  
Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port S
ATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller 
(rev 05)
00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series  
Chipset Thermal Subsystem (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation GT215GLM [Quadro FX 1800M]
(rev a2)
01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller  
(rev a 1)
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6200 (rev 35)
04:00.0 CardBus bridge: Ricoh Co Ltd CardBus bridge (rev 02)
04:00.1 SD Host controller: Ricoh Co Ltd MMC/SD Host Controller (rev 03)
04:00.4 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 PCIe IEEE 1394 Controller (rev
03)
3f:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture   
Generic Non-core Registers (rev 02)
3f:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture  
System Address Decoder (rev 02)  
3f:02.0 Host bridge: Intel Corporation QPI Link 0 (rev 02)
3f:02.1 Host bridge: Intel Corporation QPI Physical 0 (rev 02)
3f:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
3f:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
ubuntu@ubuntu:~$ █

I was trying to use freerdp with support for multiple monitor using ubuntu 13.10 x64 and I get error :

root@rdp-client:~# xfreerdp /multimon /f /u:a /p:1 /v:192.168.0.140:3389
transport_connect: getaddrinfo (Name or service not known)
Error:protocol security negotition failure

my version of freerdp 1.0.2

How can I upgrade to xfreerdp version 1.1 to support this syntax of command and multi monitor?