Latest Ubuntu related questions

Score: 3
Begus avatar
OBS Wayland screen capture not working on GNOME
in flag

I've been trying to capture my screen with OBS for so long on Wayland, but never got it working really.

I run Ubuntu 21.04 with GNOME 3.38.4 and Wayland, OBS 27.1.3, xdg-desktop-portal 1.8.1-1, xdg-desktop-portal-gtk 1.8.0-1 and pipewire 0.3.24-3. The versions of these packages were installed automatically.

When I try to capture a screen or application, I just get a black screen and the following me ...

Score: 0
Marko Spasic avatar
Getting "Authenticating the upgrade failed" message every time I try to upgrade from Ubuntu 18.04 LTS to 20.04
mx flag

So, I keep getting the same error when upgrading from Ubuntu 18.04.2 LTS to Ubuntu 20.04. I get upgrade suggestion from Software Update daily, and would really like to upgrade.

I have tried several times, using terminal as well, but I am new with Linux, so I couldn't figure out what went wrong there.

What should I do when this appears?

Hit:2 http://ppa.launchpad.net/somerville-dla-team/ppa/ubuntu bio ...
Score: 0
nightwatch avatar
SSH From Vbox Server Into Host
tr flag

I am trying to use:

# sshfs -C hostuser@hostname:/home/users/Downloads/disk_image_files/ /vbox_mount_point_name

but I get:

read: Connection reset by peer

I've tried a bunch of solutions editing the '/etc/hosts.allow' & '/etc/hosts.deny' but nothing seems to work.

Any advice appreciated.

Additional Info (bad habit of forgetting this, sorry fellas behind on work, rushing to catch up)

ubuntu 20.04 h ...

Score: 0
DBG avatar
Can't load ODT images
kr flag
DBG

picture

Hey there, as you can see in the picture, the images seem not to be able to load correctly.

Wonder why and if I can solve it.

Thanks in advance !!

Score: 1
Jan Vladimir Mostert avatar
Wayland on Kubuntu 21.10 randomly crashes
cn flag

I've upgraded to Kubuntu 21.10 from Kubuntu 21.04 and it's randomly crashing, doesn't matter whether I'm on the Nvidia graphics card or on the Intel Graphics.

Operating System: Kubuntu 21.10
KDE Plasma Version: 5.22.5
KDE Frameworks Version: 5.86.0
Qt Version: 5.15.2
Kernel Version: 5.13.0-20-generic (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i9-8950HK CPU @ 2.90GHz
Memor ...
Score: 1
Printer's /dev/usb/lpx file disappears on ubuntu mate 20.04
ye flag

On ubuntu mate 18.04 I used to send data in hexadecimal representation into a usb thermal printer with this command:

cat cmds.txt > /dev/usb/lpx

I upgraded to ubuntu mate 20.04 and realized, that the lpx file (belonging to the printer) does not appear in the /dev/usb folder, like on ubuntu mate 18.04. I have googled a little bit and found, that

dmesg | grep usblp

command should provide some usefu ...

Score: 1
is there a way to check signature/hash of the iso file and autoinstall seed file (user-data)?
mx flag

we can use following kernel parameter to automatically install ubuntu server: kernel vmlinuz verbose debug=1 ip=dhcp boot=casper netboot=url url=<url of iso file> autoinstall ds=nocloud-net;s=<cloud init yaml file root url> I wonder is there a way to let the installer check the signature/hash of the iso file and the user-data?

Score: 2
RicardoBruyn avatar
I cannot type letter ‘ç’ a with English (US, alt. Intl.)
cn flag

I cannot type letter ‘ç’ (’+c) with English (US, alt. Intl.) keyboard, the letter ‘ć’ coming out instead. Its working fine before I upgrade the systems weeks ago. I try to change the keyboard layout but I can't find a layout with ‘ç’ by compose (’+c), my keyboard and my system are English(US).

Score: 0
Michokx avatar
Ubuntu 20.04.3 LTS keeps freezing and crashing
id flag

Usually after few hours of computer use my laptop starts to freeze – mouse is responding very very slowly or not responding at all and I'm unable to click anything, impossible to open close software including terminal. After some 10-15 minutes of waiting everything goes back to normal. And if I don't restart the computer then next time my laptop won't recover, it will become unresponsive completely. A ...

Score: 0
DeapSoup avatar
Run Firefox with some non-readable files
se flag

I would like to run Firefox (installed via Ubuntu Software) on Ubuntu 20.04 while having any of the Firefox files be non-readable that are necessary for Firefox to run. So I don’t need all Firefox files to be non-readable. A single, but necessary, Firefox file being non-readable suffices. The user I would be running Firefox as is a standard user (i.e. no superuser rights).

The motivation for th ...

Score: 1
Keyboard input lag
cn flag

I just finished installing Ubuntu 20.04.3 as a dual boot system on my PC. But now when running Ubuntu, I am having a extremely odd keyboard input delay. As soon as I start typing faster, the input will not be shown at all until I finish typing and then usually takes over a second to fully load the inputted text (depending on the length).

This happens in every Application I have tried so far.

I have ...

Score: 2
PULKIT SINGAL avatar
How to install and use ARPACK++ on Ubuntu 20.04 LTS?
us flag

How can I install and use ARPACK++ on Ubuntu 20.04 LTS? ARPACK++ is an object-oriented version of the ARPACK package. ARPACK is a collection of Fortran77 subroutines designed to solve large scale eigenvalue problems. The package is designed to compute a few eigenvalues and corresponding eigenvectors of a general n by n matrix A. I want to install ARPACK++ to perform Molecular Dynamics simulations by run ...

Score: 1
I'm having trouble with the shell in Visual Code Studio in WSL
nr flag

I'm a Visual Code Studio user. I have used the CMD default shell in Visual Studio Code but I passed on ubuntu a few days ago. So I also change the Visual Studio Code default shell by replacing it with ubuntu(wsl). The problem is that when I try to run my script it writes :-bash: C:/Program Files/Python310/python.exe: No such file or directory. By the way I'm a Python language user.

Score: 0
Arzybek avatar
How to expand space available on disk
id flag

When I was installing Ubuntu I used this guide to do the partition manually: How to use manual partitioning during installation? When I run sudo lsblk I have this partition scheme:

NAME   FSTYPE     SIZE MOUNTPOINT                       LABEL
... a lot of snap patitions ...
...
sda             223,6G                                  
├─sda1 ntfs       450M                                  Recovery/res ...
Score: 1
Ubuntu Desktop 20.04: Prevent the display from turning off when locking screen
fr flag
Flo

When I lock the screen with Super + L keyboard shortcut, the screen gets locked and all displays turn off. I want to keep them on when locking the screen.

Any Ideas?

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