Latest Ubuntu related questions

Score: 0
fuzzyTew avatar
How to diagnose strange intermittent kernel misbehaviors
mg flag

See the Event Logs heading farther down.

I'm on Ubuntu Server 21.04 running kernel 5.11.0-1015-raspi on aarch64.

What are the most effective things to prepare to move forward on diagnosing this next time it happens?

Occasionally after heavy use I start getting strange issues such as these:

  • some processes that should be doing nothing display 100% usage of a single core on top (this happened recently  ...
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Latefallen avatar
Changing text on lock screen (XFCE/Xubuntu)
cn flag

I'm trying to change the text on the top-left of the lock screen (along the top bar) from "Ubuntu" to my own string.

I've checked the LightDM GTK+ Greeter Settings and Screensaver Settings and I can't find where to set it.

Image for reference:

Lock screen top bar

How would I go about doing this?

Score: 0
bab2715 avatar
Is there a way to set /run/snapd/ns/lxd.mnt with option nodev?
sa flag

My organization has flagged our new servers with security issues, one stated as such:

/run/snapd/ns/lxd.mnt partition does not have 'nodev' option set

Is it possible to set that option through a config somewhere?

I know it can be done with mount -o remount,nodev but I don't think that can be set in /etc/fstab given lxd is using nsfs.

We're running Ubuntu 20.04.

Output of mount | grep lxd

/var/lib/sna ...
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Why is the time not syncing?
cn flag

I want the time to sync, but it's not. I tried running the following commands, but it's still not syncing.

# timedatectl set-ntp off
# timedatectl set-ntp on
# timedatectl status
                      Local time: Fri 2021-08-06 20:01:43 EDT
                  Universal time: Sat 2021-08-07 00:01:43 UTC
                        RTC time: Fri 2021-08-06 20:01:43
                       Time zone: Americ ...
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Poulett0 avatar
Ubuntu 20.04 - drm_atomic_helper_wait_for_flip_done
br flag

I've decided to start using linux (because... why not?), so I went through all the installation process without any problem, the system ask for rebooting, so I let it does.

But when the machine restarted, my screen started turning on and off twice and this message appeared:

Photo of the message (It's not a VM so I couldn't take screenshot/copy the message

And it stays stuck like this forever.

The screen ...

Score: 1
Charles avatar
Systemd timer with WakeSystem=true waiting for twice the specified time
cn flag

I wanted to understand systemd timers, so I've been fiddling. I've found an odd behavior which is not what I wanted. When I start a systemd timer using WakeSystem=true and OnActiveSec setting the timer, then I suspend, the timer waits for that duration twice instead of once.

Here's an example you can try yourself:

date >> /home/user/Desktop/MyWakeLog.txt;sudo systemd-run --unit='WakeTimer'  ...
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Graham Slater avatar
Ubuntu 20.04 not booting after failed update and cannot access grub menu
cn flag

I’m a relatively new Ubuntu/Linux user and am looking for some advice on how to potentially save an installation of Ubuntu 20.04 on a Dell Precision 3431. Ubuntu 18.04 came preinstalled on this machine. I updated immediately and its been running 20.04 fine ever since. Yesterday, a failed update appears to have resulted in an inability to boot - I get the Dell Splash screen but then a black screen with ...

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chx101 avatar
My Ubuntu freezes everytime there's an update
za flag

Whenever there's a new update, my Ubuntu freezes and doesn't respond to anything.

The only thing that works is REISUB.

I hate to have to restart the machine because I setup my development environment and lose my browser tabs and other stuff.

A little history, I had installed nVidia drivers before and they consumed the battery because the GPU was constantly in use. After removing the drivers, the comput ...

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mygov avatar
Ubuntu 20.04.2 LTS - no luks password prompt on Lenovo X390 after upgrades
jp flag

I think, after some upgrades with apt-get upgrade on my Lenovo X390 with Ubuntu 20 I do not get any password prompt to decrypt the disk anymore. I just see the Lenovo logo and I’m not able to press anything, also typing the password and press enter is not working. The boot process is stuck on the Lenovo logo where normally was the password prompt below the Logo.

If I boot Ubuntu from an USB-Sti ...

Score: 1
Merajul Arefin Pial avatar
Install TP-link TL-WN725N USB wifi driver on Ubuntu 20.04
br flag

I have a USB wifi adaper tp-link model TL-WN725N. It was working fine but suddenly today it's saying that "No wifi adapters found". So I tried installing a driver from this page. But the installation failed. make all command wasn't compiling then I checked the website again. In the website it says, Operating System: Linux (kernel 2.6.18 ~ 3.19.3). But my kernal is 5.11.0-25-generic. And the USB devic ...

Score: 1
Ubuntu 21.4, how to update everything from the command line?
fr flag

Just wondering... To update my system, I normally run sudo apt update followed by sudo apt upgrade if necessary. I believe this should keep my system reasonably up-to-date. However, these commands do nothing with the snap system. I have a desktop item that I have named updates, that runs the command update-manager. When I click on that item, I get a message telling me it's checking for updates, oft ...

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sourav roy avatar
npm command not found in wsl
gb flag

I had installed nodejs on windows10 & its path is also set to environment variable. It is working perfectly. As I switched to WSL I found npm commands were not working however I could run node.exe from within WSL. Do I need to install node for wsl separately? please help me I am really a newbie. I might be asking a silly question though. screenshot attached here

Score: 1
Oleksandr_I avatar
Add watermark to all PDF pages
cn flag

Please tell me how to use the command line correctly in this case. And so the task, there are a lot of pdf files on all pages of these files I need to add a watermark. I made watermark in pdf and it works. I have already used pdftk, but only for one file, that is, when we open the terminal in the directory and enter - "pdftk original.pdf multistamp link.pdf output final.pdf" Everything works fine for on ...

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No networking after upgrade to 20.04-2 5.11.0-25
kr flag

I finally took the leap of updating after a few months stuck due to an NVidia driver bug and now I have no networking.

I'm typing in a phone so excuse my formatting.

lspci -nn | egrep '0200|0280'

Shows my Qualcomm Atheros Gigabit Ethernet Controller

ifconfig -a

Just shows lo, no eth0

I ran some other command which I found somewhere else which escapes me, but that showed my network adapter as...

*-UNCLA ...

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How to map an action to a list of keycodes with xmodmap?
in flag

I'm using ubuntu 20.04 on a MSI laptop.

The problem that I found is relative to the keys that can be used with the fn e.g. the key fn+f3 should disable the touchpad.

In the system settings if I try to create a normal custom shortcut and I press f3 it is recognized, but if I press fn+f3 I don't get anything, practically the system is not recognizing it as a key.

I know that I can use xmodmap to change ...

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Augusto Fernández avatar
I'm new and I need help to get my machine into a domain
sg flag

as I said in the title of the question in I'm new to ubuntu and I want to add my machine to a windows server domain and I don't know where to start I'm using Ubuntu version 18.04

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