My KDE panel is either corrupted or empty on a reboot or new login. This has started in the last few days. I am running Plasma 5.24.90, Frameworks 5.9.4.0 and QT 5.15.2 from the KDE:
repositories. I am also using the Brave browser which, after a period of time slows down and its attachments crash and eventually seem to render the KDE panel unresponsive. I’m not sure if these two behaviors are connected, but I suppose it is possible. How can I correct this?
Sometimes panel problems will disappear after logging out of Plasma, removing the content of ~/.cache/, then logging back into Plasma. It’s worth a try. First login after removal will be slower starting than usual, but otherwise no negative consequence. Cache is just cache.
It didn’t seem to make any difference. I ctl-alt-F2’d into a command line, deleted everything in .cache and rebooted from the command line. Do I need to actually end plasma and go into a command line. If so, how do I do that?
If Plasma is running, it has its cache in RAM, so removal from disk while it’s running accomplishes nothing. The goal is cache removal, which can’t complete while Plasma is running, unless Plasma has a special tool for the purpose that I know nothing about.
I rebooted to the rescue system using the installation media, mounted the partition with my home directory, and deleted the contents of .cache on that partition. Still no luck.
Sorry about no luck. What you did was gross overkill to put yourself in position for cache deletion. All you need to do if you ever want to try it again, is to:
- Log out of Plasma
- Ctrl-Alt-Fn (with n meaning any number from 2-6)
- Login at the shell prompt
- Delete the content of your home directory’s .cache/ directory
- Exit login session (Ctrl-D)
*]Alt-F7 (brings you back to login greeter)
As an alternative to #2, you could login to an alternate session type, such as IceWM, from which you can remove the cache using an Xterm or non-KDE filemanager, such as MC.
Bugreport?
You are the third I know running in that Problem.
Does this problem appear if you are adding a program from the KMenu to the Panel?
Thank you for this. It’s been so long since I’ve had to do this, I forgot the command sequence.
No. It only appears when I logout of KDE and log back in. When I log in, an old, corrupted panel appears with only two overlapping widgets - one is the application menu and the other looks like dolphin but I’m not sure. I can’t get rid of the second widget on editing. I can delete the panel, add a new panel and populate it fine using both widgets and dragging from the application menu. However, if I reboot or logout, that nice new panel disappears and the old corrupted one is back.
This is a bug and has been reported:
https://bugs.kde.org/show_bug.cgi?id=454105
It is fixed, apparently, in 5.25.