ubuntu 20.04 applications menu has no icons, but can launch softwares from the side bar tray that still has icons

Question

I upgraded from Ubuntu 18.04 LTS to 20.04 yesterday, The update ran successfully and rebooted the system. As soon as I logged in to the desktop, I clicked on the applications menu and there were no icons. I tried searching for existing installed software but it kept showing me "Searching . . . ". I went to the frequents tab and the menu crashed and some notification about an internal error has been detected was shown.

Solution

I had the same problem. To fix it, type:

sudo apt install --reinstall gnome-control-center

If you have trouble logging in after reboot, do:

1. ctrl + alt + f2
2. Login in
3. sudo apt update
4. sudo apt upgrade
5. sudo reboot

Good luck.

Comments

[vanadium]

How did you do the upgrade? Officially, users are not currently notified yet through the Software Updater about the possibility to upgrade.

[Sanx]

Worked perfectly, didn't have any login trouble as ubuntu -- right after reinstallation -- notified me about an important system upgrade and i ran and installed all the updates.

[yurenchen]

my dock bar show wrong icon of application, (but desktop show right). this solution solved my trouble. thanks alot.