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I tried to update from 16.04 to 20.04, and as is customary, everything went to hell. The GUI was not launching at first, but I got through that by fixing broken packages and reinstalling the linux kernel.

I can now boot into Gnome desktop and use some programs. However, I get intermittent error messages - Sorry, Ubuntu 20.04 has experienced an internal error with a crash in gnome-control-center.

error

By the way, I tried to reinstall gnome using the following command, but still see errors above.

sudo apt install gnome-session gdm3

How do I reinstall the Gnome GUI portion of by Ubuntu 20.04?

mvd
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    There is no supported way to upgrade 16.04 directly to 20.04, so that was a bad idea. Perhaps you could use the recovery mode (commandline only), where you won't be bothered with with GUI crashes. – mikewhatever Jul 08 '20 at 20:54
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    Try sudo apt-get install --reinstall ubuntu-desktop – Serafim Jul 08 '20 at 21:54
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    The screenshot mentions 18.04, but you said you are using 20.04. I would recommend to boot, hit <Ctrl+Alt+F3> and run sudo apt-get update followed by sudo apt-get dist-upgrade to get newest dependencies. – N0rbert Jul 09 '20 at 06:45
  • I updated 16.04 to 18.04, then 18.04 to 20.04. – mvd Jul 09 '20 at 14:26
  • @Serafim no luck on that. But nice suggestion! – mvd Jul 10 '20 at 23:19
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    has anyone fixed this? same problem can not launch desktop anymore can not do muych – mathtick May 03 '21 at 19:19

1 Answers1

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As this has been viewed more than 10k times (!) and people still having problems; and still no (at least not "working") answer; If someone would have this problem again; check my answer on this thread

A snippet of it below note - please do read the post; as it contains info about not only the problem; but some other(likely to come after) problems with Gnome/Nvidia(for example)

sudo apt update
sudo apt upgrade
sudo apt autoremove

sudo apt remove ubuntu-desktop
sudo apt autoremove
sudo apt install ubuntu-desktop

or sudo apt-get install ubuntu-gnome-desktop

one could as well as try sudo apt-get install --reinstall ubuntu-gnome-desktop

William Martens
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