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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.

Ubuntu 21.04 (Hirsute Hippo) was released on April 22, 2021 and became EOL (End Of Life) on January 20, 2022. Questions about 21.04 are thus off-topic on Ask Ubuntu, unless you're asking how to upgrade to 21.10.

Notable features include:

  • Linux kernel 5.11
  • Gnome 3.38, including:
    • PulseAudio 14
    • BlueZ 5.56
    • NetworkManager 1.30
  • Wayland is now the default on most configurations, which features better security and performance

Release notes

693 questions
44
votes
3 answers

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 is not related to the browser. Any idea how to…
yottabrain
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32
votes
5 answers

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 here so how can I install, i need it.
Eduardo Procópio Gomez
  • 444
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17
votes
2 answers

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. UPDATE: See below. Going back to 20.04.3 fixed the…
Dan Gillmor
  • 387
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  • 14
17
votes
4 answers

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 text, the "Copy" option is actually…
Enterprise
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16
votes
1 answer

"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 (2.9.4-2) ... Scanning processes... Scanning…
C--
  • 291
  • 1
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  • 6
14
votes
4 answers

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 21.04 x86_64 Host: HP G62 Notebook PC…
Nato Boram
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13
votes
1 answer

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.
user214128
  • 421
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  • 8
  • 14
13
votes
1 answer

"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 0000:00:02.0: [drm] *ERROR* failed to enable link…
ceiphr
  • 131
  • 1
  • 4
12
votes
2 answers

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?
Igor Foxly
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11
votes
1 answer

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 ab367e987025d2339a62fb40a400149f7dc7dc7def5 Process Since…
Shiki Ryougi
  • 111
  • 1
  • 3
9
votes
4 answers

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)
quinta
  • 441
  • 4
  • 13
9
votes
1 answer

Ubuntu 21.04 - Ubuntu Software not opening

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/usr/lib/x86_64-linux-gnu/libgtk-3.so.0:…
David Leonardo Ramos
  • 191
  • 1
  • 4
9
votes
1 answer

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 it is related to that, only that I can't see the…
metichi
  • 867
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  • 20
9
votes
4 answers

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 running again /usr/lib/usrmerge/convert-usrmerge…
rixxar
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9
votes
1 answer

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). When doing so, and if you happened to have…
Akeo
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1
2 3
…
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