I am a newbie linux user and I know fairly almost nothing but i've been managing to fix things as I go.

Since yesterday a problem has been going on for me, when I tried playing a browser game on vivaldi, a pop up appears saying WEBGL2 is missing or required, and tells me to update my system or browser, I tried again on Falkon, and the same issue appeared, so today i've updated my system and the issue still persists, I also upgraded my browsers but that doesn't seem to have helped either.

From what I understood it could be related to Nvidea drivers, as far as i'm aware i'm using Noveau, I believe I was having problems earlier on when I had just downloaded ubuntu with the Nvidea drivers so i've switched to Noveau.

I'm on Ubuntu 24. 04. 4 LTS, using xserver-xorg-video-nouveau

Se esta presentando este error en la versión Pro, de mi Ubuntu 24.04.4 LTS

Se esta presentando este error en la version Pro, Ubuntu 24.04.4 LTS

sudo apt-get update
[sudo] password for user: 
Hit:1 https://dl.winehq.org/wine-builds/ubuntu noble InRelease
Hit:2 https://dl.google.com/linux/chrome-stable/deb stable InRelease           
Hit:3 https://esm.ubuntu.com/apps/ubuntu noble-apps-security InRelease         
Hit:4 https://esm.ubuntu.com/apps/ubuntu noble-apps-updates InRelease          
Hit:5 https://esm.ubuntu.com/infra/ubuntu noble-infra-security InRelease       
Hit:6 https://esm.ubuntu.com/infra/ubuntu noble-infra-updates InRelease        
Hit:7 http://security.ubuntu.com/ubuntu noble-security InRelease               
Hit:8 http://archive.ubuntu.com/ubuntu noble InRelease                         
Hit:9 http://archive.ubuntu.com/ubuntu noble-updates InRelease                 
Hit:10 http://archive.ubuntu.com/ubuntu noble-backports InRelease              
Ign:11 https://ppa.launchpadcontent.net/inkscape.dev/stable/ubuntu noble InRelease
Ign:12 https://ppa.launchpadcontent.net/libreoffice/ppa/ubuntu noble InRelease
Ign:11 https://ppa.launchpadcontent.net/inkscape.dev/stable/ubuntu noble InRelease
Ign:12 https://ppa.launchpadcontent.net/libreoffice/ppa/ubuntu noble InRelease
Ign:11 https://ppa.launchpadcontent.net/inkscape.dev/stable/ubuntu noble InRelease
Ign:12 https://ppa.launchpadcontent.net/libreoffice/ppa/ubuntu noble InRelease
Err:11 https://ppa.launchpadcontent.net/inkscape.dev/stable/ubuntu noble InRelease
  Could not connect to ppa.launchpadcontent.net:443 (185.125.190.80), connection timed out
Err:12 https://ppa.launchpadcontent.net/libreoffice/ppa/ubuntu noble InRelease
  Unable to connect to ppa.launchpadcontent.net:https:
Reading package lists... Done
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://dl.google.com/linux/chrome-stable/deb stable InRelease' doesn't support architecture 'i386'
W: Failed to fetch https://ppa.launchpadcontent.net/inkscape.dev/stable/ubuntu/dists/noble/InRelease  Could not connect to ppa.launchpadcontent.net:443 (185.125.190.80), connection timed out
W: Failed to fetch https://ppa.launchpadcontent.net/libreoffice/ppa/ubuntu/dists/noble/InRelease  Unable to connect to ppa.launchpadcontent.net:https:
W: Some index files failed to download. They have been ignored, or old ones used instead.

I have not used Linux before, I have used Freebsd as a VM - a novice however. I also have other windows OS running as VM so no stranger to Hyper-V. Host machine is AMD Ryzen 5, 32G RAM, Graphics is AMD Radeon Graphics. Host OS is Windows 11 Pro build 26200.8328 I have installed Ubuntu 26.04 as a VM and am able to log into machine with normal login. I try to log in using "Enhanced session" and the window changes to virtual machine connection and a Xrdp login prompt. Session is preselected to Xorg, other options on the drop down box are XVnc, vnc-any, neutrinordp-any. All options fail with same error. I enter my username on the prompt, enter my password and "OK" after a short time the window shows black with white writing error message "Video remoting was disconnected", I then get another splash screen on top of that message from the MS Hyper-v Virtual Machine Connection saying "The session was disconnected. If you want to continue, try to connect again. If the problem persists, contact your system administrator. Would you like to reconnect? " Is anyone able to suggest to me what the problem is and how to fix this so I have a GUI in enhanced session. Are there logs I can copy and show here to help sort this out?
thank you in anticipation.

I didn't have Remmina installed previously. It isn't in the snap list and when I run the Ubuntu software app and search Remmina, it doesn't recognize that it's already installed so I can't remove it. Is this app required for updating or support? I uninstalled from the command line but I'm wondering why the Ubuntu software doesn't recognize it and how it got there in the first place. There were several files and folders listed in different directories related to remmina. Now there are two empty folders - org.remmina.Remmina and remmina - in my .cache. Best way to remove them?

i created directories using crontab but don't know how to delete them there are so many and they all start with dir(random numbers),I cant use rmdir bcs i dont know which option i should use (im using ubuntu ) the crontab command i used is :

crontab -e
 ***** mkdir /home/name/dir$(date +/%N)

i use this ubuntu version : 4.4.20(1)

Não consigo instalar o repositório ppa da impressora canon ip1800 no xubuntu 21.04 LTS, dá um erro no terminal ao colocar os seguintes comandos:

sudo add-apt-repository ppa:thierry-f/fork-michael-gruz

sudo apt-get update

sudo apt-get install cnijfilter2 scangearmp2 cndrvcups-utility

I recently upgraded to Ubuntu 26.04 (Kernel 7.0) on my Lenovo IdeaPad Slim 5 15ARP10 (model 83J3) and had no sound from the internal speakers. Bluetooth audio worked fine though. The problem: The Conexant SN6140 audio chip is recognized by Linux (aplay -l shows it), but PipeWire never properly initializes the speaker output on boot. The speaker port shows “availability unknown” and no sink is created for it.

I am unable to open the software and update to upgrade the system. I get the following message when I try to update in the terminal: N: Ignoring file 'third-party.sources.save.1' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension

E: Malformed entry 1 in sources file /etc/apt/sources.list.d/third-party.sources (URI parse)

E: The list of sources could not be read.

How can I get into the update?

Any ideas why this tab is constantly crashing ? https://www.icloud.com/mail/

I maintain various tabs with my email addresses open so I can check for emails. They are stable, but the address above keeps crashing.

Ubuntu version 24.04.4 LTS

This command works as I might expect:

alias pgmstat='lsof -p $(pgrep -d'\'','\'' 2>/dev/null) 2>/dev/null'

However, when I wrap it in double quotes, precede it with echo, and send it to a stdout file, bash prompt is expecting more:

echo "alias pgmstat='lsof -p $(pgrep -d'\'','\'' 2>/dev/null) 2>/dev/null'" >.file

Surely, I don't understand.

Specs:

• Processors: 12× 12th generation Intel® Core™ i5-12400F

• RAM capacity: 32 GB (31.2 GB available)

• Graphics Processor: NVIDIA GeForce RTX 3070 Ti

The bottom line is that during the download in try install - it does not reach the download of the installer - the cursor _ flashes in the upper right corner - endlessly. If in safe mode - Ubuntu is hanging on the screen - with a boot signal - but music is playing - I tried switching the monitor via Win+p, - it didn't help.

There is also an error when loading, although there is nothing wrong with my memory.

Prescribing nomodeset does not help. It stops at this picture and doesn't go any further. A memory error BUG: Bad page state in process swapper pfn:24f86d also occurs during boot.

I'm a beginner. I'm using a Galaxy Book2 Pro 5G with Ubuntu 26.04 LTS installed. The known problem is that there's no sound from the speakers, but there is sound when I plug in headphones. There's very little information about this online. If anyone knows a solution, could you please share it? Thank you very much!

I’ve just upgraded 24.04.4 to the latest software release and lost my BMC43228 WiFi adapter. Going into the GRUB boot menu I can chose between Linux kernel 6.17.0-23 and 6.8.0-41. Using the earlier 6.8 version I still had a working WiFi, so I felt reasonably confident about fixing the 6.17 install. Doing an lshw -class network I can see the BMC43228 adapter as -network UNCLAIMED.

I’ve tried uninstalling and reinstalling the driver, but it comes back with an error that suggests I look in /var/lib/dkmd/broadcom-sta/6.30.223.271/build/make.log as shown below.

DKMS make.log for broadcom-sta-6.30.223.271 for kernel 6.17.0-23-generic (x86_64)  
Fri May  1 12:34:37 PM BST 2026  
CFG80211 API is prefered for this kernel version  
Makefile:91: Neither CFG80211 nor Wireless Extension is enabled in kernel  
KBUILD_NOPEDANTIC=1 make -C /lib/modules/6.17.0-23-generic/build M=`pwd`  
make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.  
make[1]: Entering directory '/usr/src/linux-headers-6.17.0-23-generic'  
make[2]: Entering directory '/var/lib/dkms/broadcom-sta/6.30.223.271/build'  
warning: the compiler differs from the one used to build the kernel  
  The kernel was built by: x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04.1) 13.3.0  
  You are using:           gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04.1) 13.3.0  
CFG80211 API is prefered for this kernel version  
Using CFG80211 API  
Kernel architecture is X86_64  
  CC [M]  src/shared/linux_osl.o  
src/shared/linux_osl.c:23:10: fatal error: typedefs.h: No such file or directory  
   23 | #include <typedefs.h>  
      |          ^~~~~~~~~~~~  
compilation terminated.  
make[4]: *** [/usr/src/linux-headers-6.17.0-23-generic/scripts/Makefile.build:287: src/shared/linux_osl.o] Error 1  
make[3]: *** [/usr/src/linux-headers-6.17.0-23-generic/Makefile:2016: .] Error 2  
make[2]: *** [/usr/src/linux-headers-6.17.0-23-generic/Makefile:248: __sub-make] Error 2  
make[2]: Leaving directory '/var/lib/dkms/broadcom-sta/6.30.223.271/build'  
make[1]: *** [Makefile:248: __sub-make] Error 2  
make[1]: Leaving directory '/usr/src/linux-headers-6.17.0-23-generic'  
make: *** [Makefile:183: all] Error 2  

The line Makefile:91: Neither CFG80211 nor Wireless Extension is enabled in kernel suggests the kernel is at fault. Is this the case and how do I fix it?

I have downloaded .deb file and opened it with App Center. There is a warning that it is potentially unsafe but I clicked to Install anyway. It says installing now but nothing happens for at least 5 minutes. What should I do?

when my Lenovo x390 laptop suspends it won't wake again. Pushing the power button results in the fan turning on but the screen remains black and the power button lights slowly on and off showing that the system is in suspended mode.

Troubleshooting the issue I was booting the system from a ubuntu live-usb. The same problem occurs.

What may be the problem, what can I do?

Best regards, Joachim

I bought some parts for my PC because without them I can't use WiFi and Bluetooth. I bought a Tenda U2 AX300 and a TPlink ub500.

The good thing is that the Bluetooth dongle or antenna (idk which) is plug and play, but I can't use it for the Tenda U2 AX300. I tried using a wired Ethernet connection. I tried using wired to my phone to host WiFi. I tried Bluetooth, but none of them worked. Before I switched to Ubuntu I used Windows 11 and I used the same Tenda adapter (I had to download drivers from the internet). I downloaded using a hotspot from my phone and then it ran, but with Ubuntu none of them worked. I'm new to this and don't know anything about it, and I'm still learning.

MODERATOR NOTICE: This is an active incident. Do not respond unless you have additional information on it. Speculation is not permitted, nor is just saying "it's down right now".

Such posts or answers WILL be deleted without question.

I have tried to visit the official Ubuntu website, but it seems to fail with 503. Can anyone share any information they might know about this issue?

We are running a bunch of containers for a cyber security teaching environment, where students can execute arbitrary commands (unprivileged).

Our system (Ubuntu 24.04.4 LTS) is affected by the recently-published "Copy Fail" vulnerability (CVE-2026-31431).

Unfortunately, updating did not produce any new kernel packages, and we are still stuck with 6.8.0-110:

# uname -a
Linux teaching-host 6.8.0-110-generic #110-Ubuntu SMP PREEMPT_DYNAMIC Thu Mar 19 15:09:20 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux

PoC exploit (makes su not ask for passwords until undoing it below or rebooting):

$ cat exploit.py | python3 && su
# id
uid=0(root) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),101(lxd),988(docker)
# sudo sysctl -w vm.drop_caches=3 # Undo the exploit

How can we harden our system until an official patch package becomes available?

my computer is a Samsung Book 2 Pro 5G. The following System program problem detected message appeared while installing Ubuntu Desktop 26.04.

1. Environment & Hardware

Machine: Apple MacBook Pro 13-inch (Late 2013)

Network Controller: Broadcom Inc. and subsidiaries BCM4360 802.11ac Wireless Network Adapter [14e4:43a0]

OS: Ubuntu 24.04 LTS (Clean install, LUKS encrypted LVM)

Kernel Version: 6.8.0-45-generic

2. Issue Summary No Wi-Fi connectivity post-installation. The proprietary Broadcom drivers (broadcom-sta-dkms / bcmwl-kernel-source) fail to compile via DKMS on Kernel 6.8 due to deprecated kernel API usage (specifically, the old init_timer function instead of the modern timer_setup).

3. Troubleshooting Steps Performed To rule out user error, missing dependencies, or broken package states, the following steps were executed using a USB tethered connection:

Clean State & Prerequisites: * Performed a full system update (apt update && apt upgrade -y) bringing the system to Kernel 6.8.0-45.

Installed required build tools: sudo apt install build-essential linux-headers-$(uname -r).

Package Cleanup: * Forced removal of previously failed GUI installations to break the apt broken-install loop using: sudo dpkg -P --force-all bcmwl-kernel-source broadcom-sta-dkms

Cleared cache and verified system integrity (apt clean, apt --fix-broken install).

Driver Installation Attempt: * Attempted to install the community-maintained package: sudo apt install broadcom-sta-dkms (also attempted bcmwl-kernel-source).

4. Result & Root Cause Analysis The DKMS build process fails consistently. Upon inspecting the make.log (/var/lib/dkms/bcmwl/.../build/make.log), the compilation aborts with the following critical error:

error: implicit declaration of function 'timer_setup'

Conclusion: The source code provided in the current broadcom-sta-dkms (and bcmwl-kernel-source) packages within the Ubuntu 24.04 noble repositories has not been patched to support Kernel 6.8. The proprietary Broadcom code still relies on the deprecated init_timer function, causing an inevitable compilation failure on modern kernels.

Request: Looking for information on whether a patched version of broadcom-sta-dkms for Kernel 6.8+ is planned for the 24.04 repositories, or if there is an officially recommended PPA/workaround for BCM4360 chips in the meantime, aside from manually patching the .c files locally.

I have a PDF with different page sizes, some of them landscape and some portrait. How do I make them all portrait?

I'm wondering if there's an easier way than going through each PDF page with pdfinfo -f <pagenum> -l <pagenum> and determining if it's, e.g., Page 135 size: 640.45 x 442 pts (portrait) or Page 1 size: 426.967 x 663 pts (landscape).

I am very new to Linux and now using Ubuntu 24.04.2 LTS for months

But recently I see a strange orange icon in the taskbar which I don't know what its means because no text in it. Please see attached image

Anyone know what is it? What its means? Just curious

The camera (2nd gen) of my Framework 13" laptop with Ubuntu 24.04 shows my face quite red in video conferences. Is there a way to tweak the video output at the system level? I've looked for settings in the browser or the conferencing apps, but there's nothing there.

To run a program that is designed for internal use, it requires GLIBC_2.34. Ubuntu 20.04 is installed on the computer, where GLIBC_2.31 is available. How do I install GLIBC_2.34 on Ubuntu 20.04 or how do I use it for the program?

I have a Zinnia Momentum MT-100 tablet that I'm trying to use on 20.04 and it works on plug and everything, the only issue is that the orientation is wrong. It's detecting horizontal inputs as vertical and vice versa. I've tried to search a solution but all of the tutorials and forum replies refer specifically to Wacom tablets. would the Wacom settings work on non-Wacom tablets? if not, how do I fix this?

I run Ubuntu 22.04 LTS with Remote Desktop that is built in and it is great! (see attached image) However, when my internet connection breaks the service seems to hang up and I need to reboot the computer in order to be able to connect again. The normal sshd always works even after a connection issue so I wonder how do I: Reset this service from command line?

It seems to me that just resetting it will work but I don't know what service it is... Thanks for any suggestion :-)

I am trying to simulate casting my display to a miracast sink on linux. It seem like gnome-network-displays is a good option. I was having trouble getting it to work and was not sure if the fact I am running linux on a virtual machine on my windows device was the issue. It that an inherent problem?

Whenever I try sudo apt-get update I get this error:

W: Failed to fetch https://repo.windscribe.com/ubuntu/dists/bionic/InRelease  Could not connect to repo.windscribe.com:443 (10.10.34.35), connection timed out  

The windscribe.com VPN is forbidden in my country. Is there any other way to install winscribe-cli package manually? I'm using Ubuntu 20.04 LTS x86_64.

I installed Ubuntu 18.04 and then while installing Virtualbox i get the 'i386' error message after I did:

$ sudo apt-get update
Get:1 http://nl.archive.ubuntu.com/ubuntu bionic InRelease [242 kB]
Hit:2 http://security.ubuntu.com/ubuntu bionic-security InRelease                                                                
Hit:3 http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu bionic InRelease                                         
Hit:4 http://nl.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:5 http://nl.archive.ubuntu.com/ubuntu bionic-backports InRelease
Get:6 http://download.virtualbox.org/virtualbox/debian bionic InRelease [4429 B]
Get:7 http://download.virtualbox.org/virtualbox/debian bionic/contrib amd64 Packages [1426 B]
Fetched 248 kB in 1s (209 kB/s)     
Reading package lists... Done
N: Skipping acquire of configured file 'contrib/binary-i386/Packages' as repository 'http://download.virtualbox.org/virtualbox/debian bionic InRelease' doesn't support architecture 'i386'

I found several answers on Askubuntu for the 'i386' message but I don't know how to apply this to my situation

I just purchased a network adapter which according to the driver CD is a RT2870 (It isn't written on the adapter). I've installed other things using commands before but the instructions on the readme file that came with it are quite confusing.

Has anybody made this network adapter work successfully in Ubuntu? I'd really appreciate some simple step by step instructions of how to make this work.