Latest Ubuntu related questions

Score: 1
erik avatar
Camera Not Recognized in Ubuntu 20.04
cn flag

My laptop has an integrated web cam. It worked in previous versions of ubuntu. Under 20.04, when I run cheese, it says "No device found". Here is the output of v4l2-ctl --list-devices:

erik@laptop:~$ v4l2-ctl --list-devices
Cannot open device /dev/video0, exiting.

How can I troubleshoot this?

Edit: I added myself to the video group, this did not fix the problem.

Edit #2: As requested in comment ...

Score: 0
kendallbp avatar
Remmina rdp from linux to windows: win key and others not working inside session
cn flag

I'm connected with remmina from ubuntu to windows 10 in full screen mode. If I press WIN it does not display the windows start menu, but the ubuntu activities instead. It's like, if those keys were not mapped at all in remmina, they keep working as if I was only using linux.

Can I get a fully immersive session, where no matter what key I press, it's handled by windows and not linux?

Score: 0
Amir Arslan Haghrah avatar
Ubuntu 20.04 unable to detect any device that can be color managed
cn flag

In the Colors section of the Settings, I am seeing this message: Unable to detect any device that can be color managed. Also, I think because of this my night light doesn't work. How can I fix the problem? The output for nvidia-smi command in the terminal is as following:

Mon Aug  7 20:50:36 2023       
+---------------------------------------------+
| NVIDIA-SMI 390.157                Driver Versi ...
Score: 0
Nathan Bernardo avatar
Dual boot menu not showing. Ubunutu boot drive does not exist anymore
gw flag

I've been running a dual-boot setup with Windows 11 and Ubuntu 22.04 for several months now, and everything has been working smoothly. However, I recently encountered an unexpected problem: my boot menu has disappeared, and my computer now automatically boots into Windows 11 without any option to choose Ubuntu. This issue arose just yesterday after I powered off my machine and received an error message  ...

Score: -1
MoreProblems avatar
Lubuntu V22.04.3 now wants login
gs flag

After installing August 6, 2023 updates to Lubuntu V22.03.04 I cannot get automatically logged in. A blank, black screen wants a login of which I have no idea what it wants. Yet again Lubuntu is messed up after an update and this time it's very bad.

Score: 0
How to debug no audio on Ubuntu 22.04.3 LTS
cn flag

I suddenly have no audio and no video playback in any program after installing updates. It works on another OS on the same hardware. I have also tried several sound cards; no success.

System:

Linux land 6.2.0-26-generic #26~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Jul 13 16:27:29 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

How do I debug that? I don't even know where to start.

I see this in dmesg:

  726.053889] ...
Score: 1
best_of_man avatar
Non-boot CPUs are not disabled( seems there is a bug in "6.2.0-26-generic" kernel)
pl flag

I use Ubuntu 22.04 with no issues for a while, but recently I can't suspend the OS and it gives me the following error and either hangs with a blank screen or shows up the system login screen:

Non-boot CPUs are not disabled

UPDATE: I tried to use the previous working kernel that I had by restarting my computer and holding the shift key, then choosing 5.19.0-50-generic kernel and suspend works now without ...

Score: 0
Ahmed Rifaat avatar
Why when I restart Ubuntu, Windows 11 Boots Instead?
tw flag

Windows 11 is installed on my internal Laptop SDD, and I have an external one that I installed Ubuntu on it.

When I start the Laptop for the first time it enters the grub and I get to choose which OS I need to open.

But when I restart Ubuntu, I get a black screen with blinking dash on it, and I can't do anything until an amount of time passes, then Windows boots instead of Ubuntu.

What I am trying to  ...

Score: 0
Gabriele Albani avatar
Deleted partitions - grub rescue
to flag

I have deleted accidentally all disks partitions in the laptop, and now I cannot start ubuntu neither start installation from usb. After turning on laptop I get

error: no such partition.
Entering rescue mode...
grub rescue>

typing ls I get

(hd0)(hd1)

I don't need to recover any data I would like to install new OS

Score: 1
Where does Remmina store fingerprints/thumbprints of the RDP connections to remote machines?
in flag

I couldn't find where Remmina stores fingerprints/thumbprints of the RDP connections to remote machines.

I've tried:

  1. $HOME/.config/remmina/
  2. $HOME/.local/share/remmina
  3. $HOME/.ssh
  4. Searching the web... no luck.

And then I found it - sharing here to save your time - see the answer below.

Score: 0
Apollo avatar
I have to run sudo dhclient -v after every startup after update
tf flag

After I updated ubuntu I have been running into several problems, from losing all my gnome packages to now having DNS issues after each reboot. I need to run sudo dhclient -v for my internet to work every time I open my pc or it won't work, as DNS is failing. Other solution was to add nameserver 8.8.8.8 to resolv.conf but I don't want to use a fixed DNS server but to use DHCP to choose the one to use. A ...

Score: 0
Thomas Aichinger avatar
cant find dkimproxy
cn flag

I run a ubuntu 22.04 mail server with postfix and want to install dkimproxy which was available in ubuntu 18.04.

Does anyone know what happend to this package cause it is not available any more. Is it possible to download it somewhere?

Score: 3
Gulshan Mishra avatar
How to stop LibreOffice Draw from converting barcodes to numbers when opening a PDF file?
sd flag

I am using LibreOffice Draw to edit a PDF document which has a barcode printed in it. Draw decodes the barcode and replaces it with numbers as soon as I open the document. The decoded text is of 3of9Barcode font type.

I need the barcodes left in place. To do that I tried disabling/removing the font type using font-manager but it wasn't listed there. Also can't find any option to disable barcode rea ...

Score: 0
Saurav Singh avatar
How to fix BusyBox Initramfs Error on Ubuntu 22.04 , showing many types of error
gf flag

I am getting boot failure with this message on ubuntu 22.04:

[ 0.131760] x86/cpu: SGX disabled by BIOS. [ 1.974254] nvme nvmeo: failed to set APST feature (2)

Gave up waiting for suspend/resume

Gave up waiting for root file system device. Common problems: -Boot args (cat /proc/cmdline)

Check rootdelay= (did the system wait long enough?) Missing modules (cat /proc/modules; ls /dev)

ALERT! UUID=1 ...
Score: 0
Itnas avatar
Ubuntu Pro tab in Ubuntu 23.04
za flag

I upgraded to Ubuntu 23.04 from 22.04 I have a subscription to Ubuntu Pro and whereas in 22.04 there was an Ubuntu Pro tab in Software & Updates, this is not the case in Ubuntu 23.04 so I wonder why? or I missed something?

Score: 1
MAC089 avatar
Logon screen doesn't display Ubuntu 22.04.3 LTS
ng flag

For some time I have been having the previously intermittent but now constant problem that, when I boot up my system Ubuntu 22.04.3 LTS , where the logon screen is supposed to be displayed, the screen is a uniform grey. I can logon blind, but then nothing displays except my wallpaper - no menus, no icons, nothing. Pressing Ctrl-Alt-T doesn't being up a terminal. Previously I could take some actions like ...

Score: 0
How to hide the Zoom floating panel while screen sharing on Ubuntu?
us flag

I want to hide Zoom's floating panel while screen sharing on Ubuntu.

I found this tutorial, but these options are not available on the Linux client (perhaps it only works in Windows/Mac).

Is there any way to force the zoom panel to hide/minimize with some command in Ubuntu?

I installed Zoom as a deb package.

Score: 2
abhiJeetP10 avatar
Ubuntu 22.04.3 LTS won't power off
fi flag

I am having problems with shutting down Ubuntu for the last one or two days now. My device is set on dual boot. I don't have this problem with Windows 11. I tried -acpi=force, &, -update grab, upgrade grab etc. My device is an Acer Nitro 5 with Intel i5 11400H and Nvidia geforce rtx 3050 The kernel is 6.2.0-26-generic My graphics in Ubuntu is being displayed as mesa intel UHD graphics(TGL GT1).

 ...
Score: 0
Mo0rBy avatar
"Oh no! Something went wrong!" and unable to fetch package archives
td flag

Turned on my PC today and got greeted with a white screen stating "Oh no! Something went wrong. Please contact your system adminstrator."

Started by looking this up found this question. Attempted to do CTRL-ALT-F3 but got greeted with a black screen with a blinking cursor and unable to type anything. Decided to try and boot in recovery mode and access the root terminal there. Continued with the answ ...

Score: 0
Pundarikaksha Kavipurapu avatar
Grep: How to search for an exact string of numbers in a file
jp flag

So I have a file 2k6d.pqr with a list of coordinates and I am trying to find one particular one.

I type in

grep "-6.139 0.0488 1.4870" 2k6d.pqr

and it returns an error:

grep: invalid option -- '.'
Usage: grep [OPTION]... PATTERNS [FILE]...
Try 'grep --help' for more information.

I get no error with grep --help so it isn't with the grep installation or path. So I'm doing something wrong. I tried it with ...

Score: 0
Emanuel Schärer avatar
Unable to locate output folder on Ubuntu 22.04 MagiskOnWSA
za flag

I'm trying to install the google playstore on ubuntu with this guide. After having successfully downloaded all packages i should now be able to copy and install the modified build. Unfortunately, cd MagiskOnWSALocal/output gives me an error.

So how can I solve this problem?

I tried to install the output folder seperately, but what I've gotten from that seems to be having nothing to do with what I'm se ...

Score: 0
Tommaso Bendinelli avatar
What is this process doing? [127.0.1.1-manag]
cx flag

I am working with a system of four nodes with a share network file system. I was checking the processes running one of the nodes, since the system is slow and I have stumbled upon these processes:

root      798888 19.4  0.0      0     0 ?        R    11:33  38:30 [nfsd]
root      798889 19.8  0.0      0     0 ?        R    11:33  39:07 [nfsd]
root      798890 20.1  0.0      0     0 ?        R    11 ...
Score: 0
SuhaBay avatar
Problems in installing the LabVIEW 2023Q1 Community Edition on my Ubuntu 20.04
za flag

I am trying to install the LabVIEW 2023Q1 Community Edition on my Ubuntu 20.04 by following the instructions in the following ni link

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000YGwsCAG&l=en-TR

When I submit the following instruction:

$ sudo apt install ni-labview-2023-community_23.1.0.49229-0+f77-ubuntu2204_all.deb
Reading package lists... Done
Building dependency tree
Reading stat ...
Score: 0
Grant Curell avatar
Ubuntu not showing language options or input swapping after adding a language
ke flag

I added Norwegian for my wife on Ubuntu Jellyfish under settings however while I'm able to add Norwegian the language icon does not appear in the top right corner like it usually does. It has previously worked on this laptop. Before giving it to her I had a Mandarin input and it worked as the tutorial described. I also tried following this answer to make it so winkey+space changes the input and the input  ...

Score: 1
MrSparc avatar
Ubuntu 22.04 after update screen brightness control disappeared from the bar and brightness is at 100%
az flag

I have Ubuntu 22.04.3 LTS running in my Dynabook laptop Intel i7-1165G7 as my daily development machine. Today, back to work after a few days of vacation, I did sudo apt update and sudo apt upgrade. After reboot the laptop screen stayed at 100% brightness and the brightness control bar disappeared from system bar.

Some weird update released at the end of July or beginning of August 2023 messed up thi ...

Score: 0
alpine avatar
Stuck in read-only mode
ar flag

I am new to Linux so please bear with me.

I run Ubuntu 20.04.6 LTS (GNU/Linux 5.4.0-155-generic x86_64) on a partition of my hard drive. Multiple things happened :

  • I filled up that partition while downloading a rather large file, as i got notifications about having 0 MO space left.
  • used command sudo apt autoremove and a bunch of apps got deleted before i realised it and stopped the process. i don’t  ...
Score: -2
giddy avatar
Unable to locate package gpg-agent
ec flag

I am trying to install Dokku on Ubuntu 16.0.4 but always get this error: Unable to locate package gpg-agent. I have confirmed that gpg-agent is installed: gpg-agent: a gpg-agent is already running - not starting a new one

Any solution to this?

Score: 0
Szymon avatar
Problem connecting camera to RPi 4 running ubuntu 20.04 aarch64
do flag

im tring to connect camera (Raspberry GSCam) to raspberry pi 4, running ubuntu 20.04 aarch 64.

I have added start_x=1 and gpu_mem=128 to /boot/firmware/config.txt and rebooted. Still there is no video0 device under /dev.

Trying to take pictures with following code:

import cv2

cam = cv2.VideoCapture("/dev/video0", cv2.CAP_V4L)

_, frame = cam.read()
cv2.imwrite("path.jpeg", frame)
cam.release()
 ...
Score: 0
Mostafa Elgebaly avatar
Right click acting like the left click
uz flag

After updating my Ubuntu to version 22.04, I noticed that the right-click is behaving like the left-click. For example, when I try to open the context menu by right-clicking on a file, it instead opens the file itself and the same if I click left click.

Could anyone please provide some help?

Thanks in advance.

Score: 7
Thomas Grusz avatar
Server hardening of Ubuntu 22.04 by analyzing and removing unnecessary packages
cn flag

I have read Jay Lacroix's book about "Mastering Ubuntu Server", and he recommends removing all unnecessary packages in order to reduce the attack surface. Specifically, he advises running apt-cache rdepends <package> to find out if there are other packages depending on a package we consider removing.

I wrote a bash script that lists dependent packages for all installed packages, but it takes a ver ...

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Much of an executive’s workday is spent asking others for information—requesting status updates from a team leader, for example, or questioning a counterpart in a tense negotiation. Yet unlike professionals such as litigators, journalists, and doctors, who are taught how to ask questions as an essential part of their training, few executives think of questioning as a skill that can be honed—or consider how their own answers to questions could make conversations more productive.

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