Questions tagged [20.04]

Eighth LTS (Long Term Support) release of Ubuntu, code-named "Focal Fossa". Released on April 23, 2020. Will reach End of Standard Support (ESS) in April 2025. Only use this tag for version-specific questions.

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New to apparmor- why are all downloaded appoarmor prifiles blanc?

background: I'm on Ubuntu 20.04.03 LTS and looking for "how to make my next installation more secure". I am interested in a topic that often relies on third party- and maybe older/not well ...
Danny27's user avatar
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25 views

Ubuntu logs out to empty screen

I've got several machines running Ubuntu 20.04, but on some of them when user logs out it goes to an empty purple screen with mouse cursor. Nothing can be done to log in again - reboot is needed, then ...
Lukas's user avatar
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15 views

Installation error with USB boot

I am very new to these areas. I am currently using ubuntu 23.10 on my desktop PC, but I also need ubuntu 20.04 to use some software. I want to dual boot with different versions of ubuntu, but the ...
Seiya's user avatar
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26 views

How to fix error "Failed to start: Load/Save Screen Backlight Brightness of backlight:acpi_video0"

I'm a beginner Ubuntu user, using version 20.04. Ubuntu randomly black-screened on me today when I wasn't doing much, I just had Firefox and Discord open. I held the power button on my laptop down to ...
CakeDefense's user avatar
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Upgrade of Ubuntu from 20.04 to 22.04 is blocked at pregenerating of the context [duplicate]

The upgrade of my laptop is blocked and no progress since at least 30 minutes. I am wondering if it could take more than 1 hour? What I can do if no progress after more to 2 hours? Thanks in advance
Hayat Bellafkih's user avatar
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22 views

How can I turn on Ubuntu wifi and bluetooth adapter?

My Ubuntu 20.04 had a wifi icon and a Bluetooth icon, but my children played with it and now these icons do not appear on start-up. I can turn them on, and when I turn it on it notifies me that I ...
arezoo kheirabadi's user avatar
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12 views

Two instances of Netatalk after upgrade Ubuntu Server 18.04 to 20.04

I have Two instance after upgrade /usr/sbin/netatalk and /usr/local/sbin/netatalk For now second one is working after restoring from backup library /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6.0.2 but ...
Max White's user avatar
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Authentication Issues on Distribution Upgrade with Local Ubuntu Mirror Server

I have set up an Ubuntu local mirror server for the Focal(20.04) distribution using apt-mirror. Below are the configurations in /etc/apt/mirror.list: deb http://archive.ubuntu.com/ubuntu focal main ...
rish's user avatar
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Unable to pair and bond 30 sensors with Ubuntu Server 20.04.6 LTS

We are developing a solution wherein we are trying to obtain data from between 30-35 sensors over BLE which will be paired and bonded with our device. The details of our devices(hardware wise) are as ...
TheHound's user avatar
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1 answer
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Ubuntu 22 and 23 gray colors are turned white

I was using ubuntu 23.10 and after a simple Ubuntu update, the colors for gray tones was broken and now all gray tones looks like white as you can see in this screen shot from https://imagecolorpicker....
Jacob's user avatar
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FIPS kernel panics with "Failed to reset DRBG" during boot

System panics during FIPS integrity check at boot. This is on new hardware, after a clean install of Ubuntu desktop 20.04.6. I've tried both the 'fips' and 'fips-updates' options, both after clean ...
oliverplaner's user avatar
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Can't register Ubuntu Server

I am trying to register my Ubuntu subscription, but it fails. $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 20.04.6 LTS Release: 20.04 Codename: ...
Prasanna1976's user avatar
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Automatically shutdown after installing ubuntu on redmi book 15 pro

I have installed ubuntu 20 on on my Redmi book 15pro, but I dont know why its getting automatically shutdown everytime. Please help me.
Ankit Kumar's user avatar
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Issue with Sony WH-1000XM4 Bluetooth headphones on Ubuntu 20.04

I'm having a problem connecting my Sony WH-1000XM4 headphones to Ubuntu 20.04. When listening to music, it experiences brief interruptions every 5-7 seconds, which is quite annoying. I've noticed that ...
Nhut Do Huynh's user avatar
1 vote
0 answers
109 views

Cannot Upgrade from 20.04 to 22.04 LTS

I am new to ubuntu, just wanted to upgrade dedicated server from 20.04 to 22.04. On first run of "do-release-upgrade" all seemed to go fine without errors, but after restart version still ...
Masyaf's user avatar
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4 votes
2 answers
355 views

Problem with WSL-Ubuntu-20.04 on Windows: "Cannot connect to the Docker daemon" and "System has not been booted with systemd as init system (PID 1)."

I work on WSL on Windows. I downloaded Ubuntu 20.04 from the Microsoft Store. After running, I ran these commands: sudo apt update sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-...
Cierniostwor's user avatar
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I can't access internet anymore after uninstalling pihole from my ubuntu server

I can still ssh to the server within local network. I can't ping google.com or 8.8.8.8. Here is the wireless-info script result: https://paste.ubuntu.com/p/63t9bN7Dc9/
Ordinary Ubuntu User's user avatar
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27 views

What's the best remote access option without port forwarding?

Ubuntu 20.04. Company does not allow port forwarding. I'm currently using TeamViewer but it's very unreliable. I don't mind a CLI or desktop, just need something reliable.
Jonathan Woo's user avatar
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20 views

How to allow direct connection to plex media server

im trying to set up plex media server on ubuntu server os. i installed the plex media server and when im trying to watch in the same network everything is ok. the problem starts when i try to stream ...
user23887851's user avatar
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1 answer
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The volume boot has only 0 bytes disk space remaining. Safe way to remove old kernels?

I have the same problem as this question, that is I get the warning: The volume boot has only 0 bytes disk space remaining on my Linux machine, version: Description: Ubuntu 20.04.6 LTS Release: ...
Dylan Dijk's user avatar
2 votes
1 answer
57 views

what permissions should i give to a plex server

so im setting up a plex server on an old laptop that i have. the laptop is running 'ubuntu server' os. i installed qbittorrent-nox and all the downloads going to the folder /home/qbittorrent-nox/...
user23887851's user avatar
3 votes
1 answer
91 views

Nano copying word wrap as line breaks

I've encountered this issue on other platforms like Termux on Android or when connected over ssh, but never on Ubuntu using nano. I'm using Ubuntu 20.04 and GNU nano, version 4.8. using the dialog ...
mchid's user avatar
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VMware ubuntu stuck on boot after expanded disk

VMware Ubuntu stuck on boot after expanded disk. How can I solve this?
gurselturkeri's user avatar
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Xenomai installation in the system which have nvidia GPU(GeForce 940MX)

Can we install Xenomai 3 on ubuntu 20.04 in the system which have Nvidia GeForce 940MX GPU? If its possible means how to install it? Is the Xenomai 3 compatible with Nvidia GeForce 940MX?
Devibala Rajendran's user avatar
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1 answer
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Trying to change login password but new password doesn't stick

Changing it via sudo passwd said it was changed sucessfully, but when I log out and log back in the new password doesn't work. However it'll take the old password. So I tried sudo passwd (my prifile ...
Galaxium's user avatar
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0 answers
34 views

Active Directory user group not updating

I updated my AD user account with new groups, and my Ubuntu 22.04 and 20.04 systems aren't getting the new groups. I have to clear the cache and restart SSSD to fix it. Is there a more permanent ...
YamiYukiSenpai's user avatar
0 votes
2 answers
79 views

Unable to grow vm disk using Cloud-init's growpart and resizefs

I have Ubuntu 20.04 virtual machine server with Cloud-init installed. I am trying to get the vm's disk to be automatically expanded with Cloud-init. The vm host is ESXi and data source is None as I ...
Madoc Comadrin's user avatar
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0 answers
34 views

how to install mysql 8.0.28 on ubuntu

I want to install mysql mysql:8.0.28-oracle on oracle. when I run mysql on my terminal I get this, Command 'mysql' not found, but can be installed with: sudo apt install mysql-client-core-8.0 # ...
umarkaa's user avatar
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Missing ethernet internet in newly upgraded Ubuntu 20.04

I was updating my system from 18.04 LTS to 20.04 LTS and the update was successful but wifi bluetooth ethernet speaker and microphone is not working. '''sudo lshw -C net''' shows that both wifi and ...
Akriti Rajput's user avatar
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root and efi mounted as external HDD - Ubuntu 20.04

After inserting a corrupted USB stick trying to format it, sometimes root and /boot/efi partitions were mounted as external HDD, as in this picture This problem isn't happening at any boot but only ...
Davide Ferrari's user avatar
0 votes
1 answer
58 views

chrony conflicts with time-daemon

I was trying to install freeipa-client on ubuntu 20.04 that will be used on a client with no apt access. I mannualy installed all the required .deb using dpkg. after I successfully installed the ...
Al Aqsa's user avatar
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0 answers
31 views

Wiped Windows C drive the wrong way, installed Ubuntu 20.04, WiFi stopped working

My computer was originally running Windows 11 and, idiot me, I went into recovery mode and manually deleted everything in my C: drive. I tried to reinstall Windows using my installation media, but it ...
Noah's user avatar
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1 answer
36 views

do-release-upgrade with a local apt repo

I have Ubuntu 20.04 systems at my workplace, and I want to do an do-relelase-upgrade but it will only use my local apt repo. I'm currently debating on upgrading 22.04 or jumping straight to 24.04. ...
YamiYukiSenpai's user avatar
0 votes
1 answer
90 views

Ubuntu 20.04 : Unable to load the ‘nvidia-drm’ kernel

I failed to install the Nvidia driver using NVIDIA-Linux-x86_64-535.154.05.run on my Ubuntu 20.04 system this morning. At the end of the installation, an error occurs: ERROR: Unable to load the '...
creeper12356's user avatar
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0 answers
23 views

Can't find a way to remove nrf-udev package [duplicate]

Edit: second answer fixed my problem The suggested duplicate doesn't fix my problem, as shown below I tried to do that exact same thing without success (output shown below) I have installed "nrf-...
Ernest Dujo's user avatar
0 votes
1 answer
69 views

loginctl enable-linger error Could not enable linger: Access denied

I have 2 Ubuntu 20.04 servers. One of them gives me this error. Could not enable linger: Access denied when running loginctl enable-linger The other server doesn't raise any errors. I did a bit of ...
microweb10's user avatar
0 votes
0 answers
12 views

slow down plymouth animated theme

I am attempting to make a (initially very simple) custom animated plymouth theme in ubuntu 20.04. It's a very simple theme that really revolves around 2 images. Like a blinking cursor. The ...
Andrew S's user avatar
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0 answers
90 views

xamp installation stuck at 73%

I downloaded xamp from the website, then converted it to an installable format , I ran sudo ./xampp-linux-x64-8.2.12-0-installer.run the installation process keeps getting stuck at 73%
Okanu Chinonso's user avatar
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0 answers
40 views

Images won't load for certain website in Ubuntu 20.04 or 22.04

For now this only occurs with this website: http://www.panamajack.com (I want to buy a hat) and only in my installs of Ubuntu. The images on the website will not load using any browser in my installs ...
Roberto's user avatar
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0 votes
1 answer
36 views

Can't copy a file into pen drive after image is created using Startup Disk Creator

I used Startup Disk Creator to create an image of FreeDOS. My pen drive has 4gb. Freedos image has 1,4Mb. After burning the pen drive with this image I can't copy additional files because the Startup ...
Guilherme Parreira's user avatar
1 vote
0 answers
23 views

Recording output with Audacity

I'm trying to record my audio output in Audacity as explained for example in https://manual.audacityteam.org/man/tutorial_recording_computer_playback_on_linux.html. At the step where I should select &...
Kvothe's user avatar
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21 views

Ways to disconnect or connect power cable with a command without physically unplugging it in Ubuntu?

On ubuntu 20.04, I start looking for ways to automate the charging period of a laptop, this means that the power cable stays always plugged in, but the system must effectively internally disconnect or ...
fany's user avatar
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0 answers
45 views

Ubuntu 22.04.4 laptop touchpad is working but the keyboard is not working

First of all, my keyboard works on the bios screen and the grub screen. I installed Ubuntu, first time and the installation was successful, but I noticed that my keyboard did not work in the system, ...
muzip's user avatar
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-1 votes
0 answers
106 views

Press and hold arrow keys doesn't advance cursor in Firefox

It's a few weeks that when I am in a field text in Firefox (gmail, discourse forums and others, but e.g. not here in AskUbuntu) if I keep pressed the right/left arrows, the cursor does not advance on ...
Antonello's user avatar
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32 views

My ubuntu is not working properly

So I've been using Ubuntu for about a week now, and it's been good so far. However, today it started misbehaving: my keyboard is pressing 'w' by itself, and my mouse isn't moving. What could be the ...
Yusuph's user avatar
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-1 votes
0 answers
33 views

How to fix "emergency mode" on ubuntu?

I have a dual boot machine, with windows 10 and ubuntu. I tried to fix a partition and to re-add that partition (just a data partition, not the actual boot partition) to ubuntu as fat32. But now when ...
Alex's user avatar
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-1 votes
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30 views

Hidden Files will not show in Jammy Jellyfish FileExplorer

I just upgraded to Ubuntu Jammy Jellyfish from Focal Fossa (Ubuntu 25.04 LTS). The Gnome file explorer will not show hidden files; neither the show hidden file checkbox nor the Alt+H work. In the ...
WillaBeer's user avatar
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0 answers
39 views

Package dependencies error?

This error could be caused by required additional software packages which are missing or not installable. Furthermore there could be a conflict between software packages which are not allowed to be ...
Ali Khalid's user avatar
3 votes
1 answer
199 views

Adding precision to Ubuntu Calculator unit conversion

In the Ubuntu calculator, these are the values I get when converting from Millimeters to Inches: 6.25 mm = 0.25 in 6.3 mm = 0.25 in 6.35 mm = 0.25 in 6.4 mm = 0.25 in 6.45 mm = 0.25 in Is there a way ...
bwroga's user avatar
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0 answers
19 views

Touchpad not Working Even after Grub Change

I recently installed Ubuntu 20.04 on my new Acer Nitro AN17-71 alongside Windows 11. I had some problems during the install with my RTX 4060 graphics card, but I was able to resolve them by adding ...
zac's user avatar
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