Questions tagged as ['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.
Score: 3
ArtificiallyIntelligence avatar
Ghost Slack program that I cannot find its path
br flag

I am using Ubuntu 20.04. I want to remove Slack app. link to slack app

I tried sudo apt-get remove slack. It reports no error and it seems to delete some files. But still, I can find Slack from the dashboard.

Even worse, I was trying to use htop to locate the path of Slack that I just opened. Guess what, it gives me a fake path that doesn't exist, called /app/extra/lib/slack/slack Then I tried to l ...

Score: 0
abukaj avatar
How can I fix IO lagging after installation of RAID controller card?
us flag

Several months ago I have installed a hardware RAID controller card in my workstation. Since then I frequently experience annoying lags of my keyboard, something keystrokes are missing and something they are in wrong order (as if they were delivered by threads running in parallel). I have also noticed that my mouse and GUI misbehaves (Firefox, PyCharm) and that it sometimes takes a noticeable time (seve ...

Score: 4
System Freezes when a new bluetooth device or USB device is connected for 5 seconds
cn flag

I'm using Ubuntu 20.04 with kernel 5.11.0-25. If I connect a Bluetooth device (e.g. my keyboard after going to sleep or a new USB device, but not SD cards) the system will freeze for around 5 seconds. Audio will keep playing, but the image is frozen and the mouse/etc will not work.

Unfortunately I cannot show any code or ideas.

How can I solve this problem?

Score: 0
Motel Hotel avatar
My laptop can't find my bluetooth mouse, otherwise bluetooth works fine
us flag

Basically I have a Microsoft Designer Mouse that works on my personal laptop (dual boot) on W10 and another laptop on Arch but I can't find it in any way using Ubuntu 20.04.2 LTS.

I tried with stock Bluetooth, blueman, and bluez's bluetoothctl but the device (in pairing mode) never shows up.

Is there anything I could try to make it show up and pair?

Thanks in advance guys

Score: 1
madhur avatar
Wi-Fi networks not visible after security and firmware update
cn flag

I have recently done a security and firmware update. Since then, no network appears under Wi-Fi.

Below is the output of sudo lshw -C network


       description: Wireless interface
       product: Cannon Point-LP CNVi [Wireless-AC]
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       logical name: wlan0
       version: 30
Score: 2
Tim  avatar
How to get rid of ffmpeg showing `configuration:` message?
br flag

The below message is being displayed while using a lot of ffmpeg commands in Ubuntu 20.04. Commands like $ ffmpeg -version $ ffmpeg -i video.ts -acodec copy -vcodec copy -f mp4 video.mp4

configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresampl ...
Score: 1
Benjamin Bray avatar
NVIDIA drivers suddenly stopped working after rebooting from Windows, reinstall fails (Ubuntu 20.04)
it flag

System Information

  • MSI Creator 15 Laptop
  • NVIDIA GeForce RTX 2070 SUPER Mobile / Max-Q
  • External LG Ultrawide monitor
  • Windows 10 / Ubuntu 20.04 dual boot

The Problem

I have been using the nvidia 455 drivers on my Ubuntu 20.04 machine successfully now for about six months. I rarely use the Windows partition, but I was using it yesterday. After shutting down Windows 10 and returning to Ubuntu, my ext ...

Score: 0
user1237819 avatar
red dashed line on screen
pr flag

I am running Ubunutu 20.04 on my Thinkbook 14s yoga (graphics Mesa Intel Xe).

All of a sudden there is a single red, vertical, dashed line on my display. I tried running updates and rebooting but the line is still there.

Any ideas on how to get rid of it ?

Score: 0
Lokesh Battula avatar
Ubuntu20.04 getting stuck
uz flag

My laptop is getting stuck after starting the device, I'm getting the opening screen and I can able to open apps ,but after sometime like 5 minutes,the system is getting stuck and I cannot able to use keyboard and mouse I tried long pressing the power button and starting the device again,but the same thing is happening again Can someone please help

Thanks in advance

Score: 1
Kajair avatar
Driver problems on Laptop
np flag

My new laptop, Lenovo V14 iil touchpad and wifi modules are not recognized in ubuntu 20.04 . Please give me solution thanks alot

Score: 0
shashI avatar
What can I do if my running programs freeze?
cn flag

I opened firefox browser and it was freeze.I can't close it. Is there any command to run in terminal to close this.

enter image description here

Score: 0
Eymen Sevil avatar
Black screen on GRUB with AMD RX 550
mx flag

I'm trying to boot Ubuntu 20.04 LTS. But, I'm getting a black screen. I can start Windows from boot menu (not GRUB). But when I will try to boot Ubuntu, I can't see anything. Just black screen. What can I do? My GPU is AMD RX 550 and my CPU is Intel i5-10400F.

Score: 0
Prabal Kajla avatar
Change Ring parameters' pre-set maximum limits for NIC
cn flag

We have a Dell Poweredge R440 with Ubuntu 20.04 LTS (Kernel - 5.4.0-80.90-generic).

The ethernet adapter is Broadcom NetXtreme BCM5720.

I need to increase the Ring buffer value to 4096 for both RX and TX. The issue is that the pre-set maximimums are not allowing me to change the values greater than them.

Ring parameters for eno2:
Pre-set maximums:
RX:             2047
RX Mini:        0
RX Jumbo:       0
Score: 0
Krusader doesn't show wine folder
in flag

In Nautilus or by cd command, in my home folder, I can access my wine folder (".wine"). However, in Krusader, folders ".winff" and ".dosbox" are shown instead and the wine folder itself (or its "drive_c" subfolder) is not accessible. Is this a bug caused by Krusader existing out of Kubuntu, or is there any other reason? And is there any easy fix?

Btw. I'm happy with Krusader in general, changing to some ...

Score: 1
melvio avatar
How to find a .desktop file for a given gnome search icon
cn flag

Is there a generic way to find the .desktop entry for a specific menu entry in the gnome-search bar?

For example, I was trying to find the .desktop entry for the gnome Settings application. As shown in this image:

Note that I already found this particular .desktop file because I knew that the official application name is gnome-control-center.
Thus the following command got me the right file:

$  ...
Score: 0
ayush dhokriya avatar
Clearsigned file isn't valid, got 'NOSPLIT' (apt update)
id flag

My sudo apt update failed, but I don't understand why:

Err:2 focal InRelease            
  Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Err:3 focal-updates InRelease
  Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Err:6 ...
Score: 0
atfortes avatar
ubuntu 20.04 cannot connect to wifi (wifi settings not visible)
ke flag

I have a new laptop (MSI GE66 raider) and recently installed ubuntu (dual boot with windows 10).

I noticed that my wifi download speed was slower on ubuntu than on windows 10. I tried reinstalling the adapter and so I followed the instructions on this answer: No WiFi Adapter Found with fresh Ubuntu 20.04 install on MSI GE66 Laptop, and other strange behavior

When I rebooted, my wifi settings disappeared ...

Score: 0
su command in /usr/bin
pt flag

I have an udev rule that runs a command as root. I have two different machines running on ubuntu and the su command in these machines are located in different locations. In one computer is located in /bin/ (ubuntu 20.04.2), while in the other is located in /usr/bin/ (ubuntu 20.10). The rule only works on the machine where su is located in /usr/bin/, even if I modify the path appropriately. How can I in ...

Score: 0
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 ...

Score: 0
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 ...

Score: 1
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: 0
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 ...

Score: 0
Monitor/Display Switch Applet for Ubuntu 20.04?
cn flag

I have a two monitor setup that's shared between two computers and I have to go back and forth a lot. I'm wondering if there's some kind of display menu applet or extension that would allow me to quickly switch between different configurations without having to open the settings app.

Score: 0
David Kingsella avatar
FTP will not accept a requested login
iq flag

I get the following error message when I try to connect to my vsftpd server:

There was a problem connecting to your host or proxy. Please check your server settings and try again. If you are sure you have entered the correct information, please contact your network administrator or the server administrator. [7] Additional information: couldn't connect to host.

Score: -3
dada_nag avatar
I can not install pip3 on my Ubuntu
kr flag

I need to install pip3 on my ubuntu but if i run sudo apt install python3-pip I get following error: error installing pip

If I try to run sudo apt --fix-broken install to solve the error, I get the followind message: error running --fix-broken

Enyone know something I could do?

Score: 0
Brad Solomon avatar
fips-updates UA service does not seem to disable MD5
pt flag

I have fips-updates enabled on an Ubuntu 20.04.2 EC2 instance through Ubuntu Advantage, but MD5 still seems to be allowed and working.

$ sudo ua status
fips          yes       n/a       NIST-certified core packages
fips-updates  yes       enabled   NIST-certified core packages with priority security updates

$ cat /proc/sys/crypto/fips_enabled
Score: 0
FedKad avatar
How to prevent BIND logging queries matching a regular expression?
cn flag

I am currently running BIND named on my Internet facing servers to respond to authoritative query requests for my domains. So, I have configured /etc/bind/named.conf.local as follows to log all queries coming to my DNS servers:


logging {
        channel query.log {
                file "/var/log/named/query.log" versions 10 size 10m;
                severity debug 3;
                print-time y ...
Score: 0
Luctia avatar
Secondary monitor working, laptop screen black
ua flag

I've been using a dock for my laptop for some time now and it has always worked fine, but now my laptop screen stays black, with the secondary dock monitor working just fine. I have a dual boot with Windows and on there the screen works just fine. With nomodeset the laptop screen does turn on, but then the secondary monitor doesn't work.

I'm running Ubuntu 20.04 on the HP EliteBook 840 G5 3JX27EA. My la ...

Score: 0
markus randa avatar
Monitoring data usage per destination ip address
bo flag

I have client which wants to know how much internet we are using with our virtual machine on their work site. I've looked into programs such as "vnstat" which is great for the total usage for one or more interfaces, but I need to know if the traffic is on the local network or internet. Since we are using a lot of local video streams, the numbers tend to be high, so just checking if it's a little or a lo ...