I’ve had this issue for a while now, since I thought I could fix it myself. Almost all my programs have lost their icon image, which is not fixable by applying a different icon theme unfortunately. Just installed the Reversal icon pack to test that. My settings are attached here, sorry for the german:
I am assuming this is due to some of the weird behaviour I have had for some days months ago. Gnome would just not load and instead show me an error screen. So I had to uninstall gnome entirely, then reinstall it and that magically fixed it, but my icons were gone.
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This is all what shows up. Heres my complete terminal output:
marty@MartyPC:~$ sudo update-icon-caches [sudo] Passwort für marty: Usage: /usr/sbin/update-icon-caches directory [ ... ] marty@MartyPC:~$deleted by creator
Look at the comment I made above. I already tried that. EDIT: I almost didn’t see the star, sorry