Questions tagged [21.04]
Questions about 21.04 are off-topic on Ask Ubuntu, unless you're asking how to upgrade to 21.10. Ubuntu 21.04 (Hirsute Hippo) was a non-LTS version released on April 22, 2021. It became End Of Life (EOL) on January 20, 2022.
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Screen share show black screen after upgrade from Ubuntu 20.10 to 21.04
Screen share shows just a black screen after the upgrade from Ubuntu 20.10 to 21.04. It was working fine until 20.10.
Tried in Google Chrome, Firefox, etc. all of them shows just the black screen. It ...
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votes
5
answers
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qt5-default not in Ubuntu 21.04
I tried to install qt5-default but the package was not found. Of course, I read this question and added universe to the apt and done a apt update.
I think qt5-default is not in 21.04 yet as it says ...
19
votes
4
answers
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How to disable "Pending kernel upgrade" message?
Since I upgraded to Ubuntu 21.04 hirsute, I get this very annoying message whenever I perform some upgrades.
How to disable it? It's breaking my upgrade scripts.
System information :
OS: Ubuntu 21....
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17
votes
1
answer
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"Failed to check for processor microcode upgrades" at the end of apt-get. How can I fix this?
I am using Ubuntu 21.04 Server on Raspberry Pi 4 (4GB RAM)
When I use apt to install a package, I get some messages at the end that I don't remember getting on my PC:
Processing triggers for man-db (2....
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17
votes
2
answers
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Slack closes down on suspend
Running Ubuntu 21.04 on ThinkPad X1 Carbon 9th generation. When I suspend the computer, Slack closes down. Happens every time. Notified Slack, but wondering if anyone else here has encountered this.
...
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17
votes
4
answers
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Pasted text in Gnome Terminal in 21.04 is always highlighted
In Ubuntu 21.04, when text is pasted into Gnome Terminal, the text is always highlighted.
It appears as if the text is selected, but it is only highlighted.
If you right-click on this highlighted ...
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13
votes
5
answers
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CopyQ global shortcut not working on Ubuntu 21.04
CopyQ clipboard manager global shortcut to show/hide main window does not work on Ubuntu 21.04 (doesn't work under Wayland windows manager)
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votes
1
answer
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How do I install AppImageLauncher in ubuntu 21.04?
Both deb files from "https://github.com/TheAssassin/AppImageLauncher"
Return "Cannot satisfy dependencies"
I want to integrate app images in my system.
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13
votes
1
answer
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"failed to enable link training" when resuming from suspend
I'm on a Dell XPS 7590 running a fresh installation of Ubuntu 21.04. I'm running Wayland.
When resuming from suspend, I frequently receive a black screen which only contains this error:
i915 0000:00:...
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12
votes
2
answers
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Ubuntu 21.04 Power mode
So, I use AIO device and that means this device always plugged in, and I can use performance mode but every time I reboot it auto-set to balance mode. How can I use performance mode permanently?
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1
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Ubuntu Software error message: Checksum failure
Summary
Everything goes on well except 'Update' in Ubuntu Software:
Unable to get list of updates: Failed to update metadata for lvfs:
checksum failure: failed to verify data, expected
...
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10
votes
2
answers
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What is the .var folder for in my Home Directory
What is the ~/.var folder used for and is it safe to remove the content within this folder?
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9
votes
1
answer
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error: symbol 'grub_register_command_lockdown' not found when installing Ubuntu 21.04 in BIOS mode
This is a pre-emptive report (since I am going to post a solution below) for people facing this error when trying to install the recently released Ubuntu 21.04 in BIOS mode (UEFI mode should be fine).
...
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9
votes
1
answer
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How can I change Okular's GUI so I get white text on black background or similar, instead of blending colors?
Okular has an odd choice of font and background colors in some places and this makes it difficult to read some text.
I looked at the settings and searched online but couldn't find anything on changing ...
user1200336
9
votes
4
answers
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Error after update Ubuntu updating from 20.10 to Hirsute Hippo (21.04)
When trying to update, the error weighs:
FATAL ERROR:
Both /lib/x86_64-linux-gnu/libselinux.so.1 and /usr/lib/x86_64-linux-gnu/libselinux.so.1 exist.
You can try correcting the errors reported and ...
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9
votes
1
answer
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Can you still use x.org in 21.04?
I installed 21.04 on my laptop to try it out, and now it comes with wayland as the default.
However, I'm noticing some issues with my digital drawing tablet and I wanted to switch to x.org to see if ...
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2
answers
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How do I get the fingerprint reader to work in Ubuntu 21.04? (XPS 15)
I've tried this and this. Following the second linked post, fprintd-enroll spits out Impossible to enroll: GDBus.Error:net.reactivated.Fprint.Error.NoSuchDevice: No devices available
After following ...
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9
votes
1
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Ubuntu 21.04 - Ubuntu Software not opening [duplicate]
Yesterday Ubuntu Software was working but today it isn't. Running snap-store shows the following error
/snap/snap-store/518/usr/bin/snap-store: symbol lookup error: /snap/snap-store/518/gnome-platform/...
8
votes
2
answers
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Ubuntu 21.04 shutter did not work without X11 server
I installed shutter 0.97 version
sudo add-apt-repository ppa:linuxuprising/shutter
sudo apt-get update
sudo apt install shutter
and
sudo apt install gnome-web-photo
but faced with error when try to ...
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8
votes
4
answers
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ALT+TAB stops working after a while in Ubuntu 21.04
After upgrading to Ubuntu 21.04 "hirsute", changing of program windows with ALT+TAB stops working. After a while I am not able to jump between programs.
Also the red dots in the favorites ...
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8
votes
1
answer
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How to access extra mouse buttons on Wayland?
Since unfortunately Gnome does not offer any option to configure additional mouse buttons I used to achieve this simple goal by writing a tedious configuration file for xbindkeys.
What I wanted was ...
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8
votes
3
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How to install AMD-GPU-PRO Drivers in Ubuntu 21.04?
Every time I execute
./amdgpu-pro-install --opencl=pal,legacy
within the
amdgpu-pro-21.10-1247438-ubuntu-20.04
folder, it will try to install it, but then it will crash with the error:
Errors were ...
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8
votes
9
answers
13k
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Bluetooth not working in Ubuntu 21.04
This is the output from the service bluetooth status command:
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor pre>
Active: ...
8
votes
6
answers
8k
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Keyboard not working after shutdown (ASUS Zenbook 13 OLED UM325S)
I just installed Ubuntu 20.04 on my new ASUS Zenbook 13 OLED UM325S.
Keyboard is not working after a cold boot. Keyboard will start working on the next boot, if the device is rebooted at Cryptsetup ...
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8
votes
1
answer
19k
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How to install Cutefish Desktop in Ubuntu?
Cutefish is a new desktop environment that resembles the Mac OS UI. It was recently featured in OMG! Ubuntu!.
image source: The OMG! Ubuntu! article
Cutefish OS is Debian based, so the desktop ...
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8
votes
2
answers
4k
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How to install python3.8/3.7 on ubuntu 21.04
I failed again and again installing python3.8 on my ubuntu 21.04
Now it is 'ok' but this error message appears from pip (and import ctypes doesn't work too):
Traceback (most recent call last):
...
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votes
5
answers
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Have I Installed Lubuntu 21.04 LTS, or need I do something to have LTS?
I've installed Lubuntu by following the instructions from chapter 1 of the Lubuntu manual.
In chapter 1.1, it said that I had to choose between LTS and Regular Releases. However, I was never asked to ...
user1200336
7
votes
1
answer
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How to run a command BEFORE shutdown on Ubuntu 21.04
I just want to run (as root) a command or script before each reboot/shutdown/poweroff on Ubuntu 21.04 (when I run the shutdown or poweroff commands, or using GNOME/KDE GUI options). I've tried putting ...
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votes
2
answers
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Bluetooth service failed to set mode
So, I tried to use my wireless headpods but found that Ubuntu 21.04 has a bug:
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor ...
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7
votes
1
answer
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Samsung Galaxy Buds+ Bluetooth Headset works on Pipewire?
On Ubuntu 20.10 I was able to pair the Samsung Galaxy Buds+ earplug headset with the Bluetooth from PulseAudio through the BlueZ API, but the audio from the low quality headphone had very low volume ...
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votes
1
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Why is "x86/split lock detection" spamming my syslog when Steam is running?
I have a ThinkPad X1C9 laptop connected to 3 displays via thunderbolt and an nVidia 1050Ti in an external GPU enclosure. My syslog is getting spammed with the following, why?
Googling CJobMgr led me ...
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6
votes
1
answer
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I accidentally deleted the directory /lib/modules/5.11.0-22-generic. How can I recover it?
I am on Ubuntu 21.04 (Hirsute Hippo) and I accidentally deleted the 5.11.0-22-generic directory in directory /lib/modules.
How can I recover or reinstall it?
6
votes
2
answers
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How to install Ubuntu without a USB drive?
I installed Fedora 34 about a week ago and found out that most of the apps used .deb which Fedora doesn't support, so I was thinking about switching to Ubuntu, BUT I lost my USB drive, so does anyone ...
6
votes
5
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Ubuntu 21.04 remove trash, user and drive icon from desktop?
I want to remove the trash icon, the home icon as well as the drives from my desktop. I've removed them in Ubuntu 20.04, but after updating, they were there again:
I tried:
gsettings set org.gnome....
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6
votes
3
answers
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WiFi adapter not found Realtek 10ec:8852 on Ubuntu 21.04
I have a Ubuntu 21.04 fresh install but my Wifi is not working. It states: "Wi-Fi adapter not found". The card is an Intel wifi 6 AX200.
When writing lshw -C network it shoes network ...
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6
votes
2
answers
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What are the steps to run Wayland on 21.04 with optimus nVIDIA?
I have a Dell Inspiron 7577 laptop with nVIDIA GeForce GTX 1060 with max-Q design and integrated Intel GPU, running Ubuntu 21.04. It has a HiDPI screen 3840x2160 and I use fractional scaling at 175% ...
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6
votes
2
answers
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Cant enable gdm3 after following a tutorial on how to remove KDE from ubuntu
Every time I startup I now have to press ctrl + alt + f3 and type something along the lines of
sudo systemctl start gdm3
if I don't do that then my pc will just be stuck on the bios logo and nothing ...
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6
votes
3
answers
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HEIF/HEIC support in Kubuntu 21.04
I upgraded from Kubuntu 20.10 to 21.04. According to the answer at Any app on Ubuntu to open and/or convert HEIF pictures (.HEIC, High Efficiency Image File Format)? support for HEIC/HEIF is a part of ...
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1
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Taskbar- and Menu-Icons missing after update to Hirsute Hippo (21.4)
All Application and window icons are missing/changed to black squares after update to Hirsute Hippo (Kubuntu 21.04)[Desktop with missing icons][1]
Changes in Theme, Iconset, plasma style (Breeze, ...
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3
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Fix CAps LOck delay in Ubuntu 21.04
I am one of those people who uses CAPS LOCK to capitalize text, so the issue is quite annoying on Linux distros where there is a delay. I had found a fix for this, which included changing the key<...
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5
answers
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Black Screen after wake from suspend on Ubuntu 21.04
I have a Dell Venue with an Intel CPU and Intel HD graphics card. After I suspend my PC and wake it up, the screen remains black. I can listen to the sound when I press, for example, the volume ...
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1
answer
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ubuntu 21.04 keeps freezing. need help diagnosing
sometimes it lasts 5 minutes after boot, sometimes a few hours, but it always freezes. doesn't seem to be one process or app i've tested and had freezes under load and while idle.
I've ran memtest, 4/...
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votes
0
answers
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Nautilus crashes when trying to open another window by right-clicking the Nautilus icon on the dock and then selecting "Documents" (Ubuntu 21.04)
When I right-click the Nautilus icon on my dock while at least one Nautilus window is already open, I can select "Documents" in the appearing menu. This should open another Nautilus window ...
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6
votes
0
answers
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Ubuntu 21.04 Wayland copy/paste intermittently fails
Ubuntu 21.04
Gnome 3.38.5
Wayland
I've noticed that intermittently copy/paste starts failing. Anecdotally this only seems to happen when trying to paste into an electron app (slack/atom) but after ...
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votes
2
answers
14k
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Ubuntu 21.04 - bluetooth 5.0 dongle does not work and says there's no firmware
I try to make my USB Bluetooth dongle work, but it does says, that there's no firmware
lsusb output:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 0bda:8771 ...
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votes
2
answers
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Can't mount NFS share on Mac OS Big Sur shared from Ubuntu 21.04 - rpc.statd not running
I have set up a NFS share on a Ubuntu 21.04 VM, which I want to mount on a Mac OS Big Sur client.
The share lists fine, when checked with showmount, but the mount fails:
andi@iMac-Pro Projects % ...
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5
votes
2
answers
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My ubuntu says I should upgrade but then doesn't let me
I seem to have run into a workflow bug, with end of lifecycle with Ubuntu. I am getting the screenshot below. So I hit Upgrade... to upgrade it and then nothing happens.
So then I hit Upgrade... and ...
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5
votes
2
answers
4k
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Bluetooth toggle not working in Ubuntu 21.04
I updated my OS yesterday from 20.10 to 21.04. Everything was fine today until I tried to connect my Bluetooth earphones to my PC.
The Bluetooth service remains turned off even when I turn the toggle ...
- 421
5
votes
3
answers
2k
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XPS 9510 with OLED screen no brightness control with Ubuntu 21.04
I just run Ubuntu 21.04 in live mode to test before a full installation on an XPS 15 9510 with the OLED screen, but I cannot control the screen brightness, I know there is an issue with OLED screens ...
- 421
5
votes
1
answer
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Ubuntu 21.04 - high CPU spikes when a mouse is moved
I have the following issue with CPU on Ubuntu 21.04.
It was not the case for me on version 20.10 and previous ones.
When the mouse is moved frequently on my PC I have huge CPU spikes. temp is above 60 ...
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