Latest Ubuntu related questions

Score: 0
Cant resume from suspend when screen not turned on
cn flag

I'm having an intermittent problem resuming from sleep/suspend. One of my displays is an OLED TV and it turns itself off sometimes to power save. I think the problem happens when the system tries to resume and this display is turned off. I have another monitor connected which turns back on but it only shows the background and I'm not able to do anything on it, I've tried hitting tab and entering my pas ...

Score: 0
SebMa avatar
systemd --user children processes not stopped afer logout
de flag

After each logout from KDE, I can find the systemd --user process when I log into a tty{2..6} console and its remaining 23 children still running :

$ ps -Af | grep -v grep | egrep -w "PPID|$(pgrep -u $USER systemd)"
UID          PID    PPID  C STIME TTY          TIME CMD
sebasti+   64862       1  0 13:13 ?        00:00:00 /lib/systemd/systemd --user
sebasti+   64865   64862  0 13:13 ?        00:00:00 (sd- ...
Score: 0
rey avatar
How to remove current opened app icon from the top bar?
cn flag
rey

i want to remove google chrome (or the current opened app) icon on the panel but i want to keep the text. Is there any extensions to do that? Or can it be removed with some code on /.config/gtk-3.0/gtk.css? I'm using ubuntu 20.04.2 LTS, GNOME 3.36.8. . . edit This is actually what i want How do I remove the application icon from the top panel? It works, with some adjustment of css id and class

panel -  ...

Score: 3
Fantastic Mr. Fox avatar
Compiling the source code creates bigger files comparing w/ Ubuntu prebuilt packages, why?
se flag

Am I doing anything wrong? I'm building some libraries from the source code, but the file sizes are much much bigger comparing w/ Ubuntu packages. Here is an example.

https://github.com/linuxwacom/libwacom built w/ configure; make creates libwacom.so.2.6.1 (149,1 kB) and the same file in /usr/lib has only 41,8 kB. I assume debug version comes with postfix 'd', am I right - so what's wrong here? Ta.

Score: 2
Giochiare avatar
Following the most recent update, I've lost twin monitor functionality
cn flag

With Ubuntu 20.04.2 LTS, a few hours ago I had an update of the system,. Since then my dual monitor has lost any setup. The system does not even see or recognize the monitors and it displays the same screen for both monitors.

With apt-get update I get a signature error

Error:9 https://repo.radeon.com/rocm/apt/debian ubuntu InRelease              
 : EXPKEYSIG 9386B48A1A693C5C James Adrian Edwards ( ...
Score: 0
How to follow links on a SPECIFIC webpage and analyse them recursively to download files using wget?
ru flag

I am trying to download audio files from a webpage using wget. I cannot get the command right. Let us say the files are on the page http://songs.com/artists/name/album/2020 On this page there are several albums each has its own link that leads you to another page where the links to the audio files exist. The links for these audio files might lead to another website, for e.g. http://music.com/song.m ...

Score: 0
Armaghan Fazal avatar
Systemctl command is returning this output. Failed to get properties: Launch helper exited with unknown return code 1
cn flag

I had to reboot my ec2 instance because it was hanged at some point. After reboot my custom systemd service has stopped executing. When I try to run sudo systemctl start gunicorn it outputs the following Failed to get properties: Launch helper exited with unknown return code 1 I want to re enable my services again. It was working fine before reboot.

Score: 0
Terraposse avatar
Steps and version to upgrade 2013 Acer laptop running windows vista
ar flag

I have been given an old Acer laptop running Vista. It dates from 2013. Which version of Ubuntu should I use to upgrade it and can I install from a usb disk drive? Thanks.

Score: 0
John Smith avatar
Persistent device naming per physical port
cn flag

I have quite a few servers that are used to test some FC and SAS hardware. One of the nightmares is that I seem to be unable to find something in udev that identifies a physical port. What I ideally want is to have something in /dev that maps device names to physical ports on my HBA. So for example /dev/fc/by-physical-port/0 would always be the same exact port. I can't use any serial number or mod ...

Score: 0
Kong avatar
xrandr --dpi 142 but nothing happens and everything is still blurry
jp flag

I have a 17 inch laptop monitor and 1920x1080 and the dpi was set to 96x96 i ran the command xrandr --dpi 142 but nothing happens and everything is still blurry. What can I do to make everything not blurry?

EDIT: I am using Ubuntu 20.04.

Distributor ID: Ubuntu
Description:    Ubuntu 20.04.2 LTS
Release:    20.04
Codename:   focal
Score: 0
marcointrovigne avatar
Problems with Tensorflow-gpu on Ubuntu 18.04 / CUDA 10.2
in flag

I have some problems in order to install tensorflow-gpu on Ubuntu 18.04 with CUDA 10.2. This is the error that i have

2021-08-03 09:45:17.606800: I tensorflow/stream_executor/cuda/cuda_gpu_executor.cc:1006] successful NUMA node read from SysFS had negative value (-1), but there must be at least one NUMA node, so returning NUMA node zero
2021-08-03 09:45:17.607729: I tensorflow/core/common_runtime/g ...
Score: 2
noseratio avatar
How to disable graphics hardware accelerations in 20.04?
fr flag

For troubleshooting purposes, how do I completely disable graphics hardware accelerations in Ubuntu 20.04 (Focal Fossa)?

The related Graphics settings don't seem to be available in the Settings app anymore.

Score: 3
Hafiz Muhammad Shafiq avatar
How to convert Ubuntu VirtualBox VM to .iso format?
pt flag

I have configured Ubuntu 20.04 in VirtualBox. I have installed some software and applied some settings.

Now, I want to convert this image to a .iso image so that I can install this customized Ubuntu version to other servers.

How can I do it?

Score: 0
Safe way to boot test a clone of my internal drive?
in flag

I’m on Ubuntu 21.04 on my laptop (MSI Bravo 15 Ryzen 7 4800H 15.6" 16GB A4DDR-212IN with 2 internal nvme drive slots).

I’m regularly using Clonezilla to clone my main internal drive to an external USB connected nvme drive. I want to test boot from this external drive to make sure the clone is working good but somewhere I read to never plug in and try to boot from an external clone drive cuz t ...

Score: 0
Kong avatar
Ubuntu going from 2560x1440 to 1920x1080 makes everything super blurry on a 17 inch laptop monitor
jp flag

I am using a 17 inch laptop monitor. The initial resolution of 2560x1440 is not blurry but when I change it to 1920x1080 everything becomes blurry. How do I fix this? I have used a 24 inch monitor on 1920x1080 and it does not get blurry so I dont believe that a 17 inch monitor would be blurry.

Score: 0
Caleb McCoy avatar
Black screen flickering and cut off when switching monitor refresh rate from 60 Hz to 165 Hz
cm flag

I am new to Ubuntu and just got done doing a fresh install and right away I wanted to change my monitor refresh rate.

However, as I switched from 60 Hz to 165 Hz I got a terrible black screen and part of it (at the bottom) is flickering also the most of the whole screen is black.

Specs:

Screenshot of specifications

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