try one of those:
- Killing the
plasmashell
process and restarting it.
- delete the
~/.config/plasma-org.kde.plasma.desktop-appletsrc
file and recreat it.
- reinstall the
plasma-desktop
.
Killing the plasmashell
process and restarting it from a terminal:
To terminate the plasmashell
process you will need access to a terminal. On most distributions you can get a terminal with CTRL+ALT+F1 or CTRL+ALT+F2. Don't worry, your screen will turn black and you will be prompted to log in with your username and password.
To get back to your regular KDE session you will need to press CTRL+ALT+F7 or CTRL+ALT+F1!
Once you have opened a terminal session you can stop the plasmashell process with
killall plasmashell
and start it again with
plasmashell &
The &
is only required if you want to be able to close the terminal or want to be able to keep using it for other commands. It will start the plasmashell process in the background so it does not close with the terminal and does not keep blocking the terminal from receiving further input.
Alternatively you can kill the plasmashell process in your terminal and then immediately return to KDE and hit your hotkey for krunner, which is afaik ALT+F2 by default, and enter plasmashell
there.
delete the ~/.config/plasma-org.kde.plasma.desktop-appletsrc file and recreatit.
deleted the file by (ALT-F2 "konsole"):
rm ~/.config/plasma-org.kde.plasma.desktop-appletsrc
Then logout from the session (ALT-F2 "logout")
Log back in, and the taskbar is now visible, some settings were lost (background color, ...)
keep a backup of the file, in case it happens again:
cp ~/.config/plasma-org.kde.plasma.desktop-appletsrc ~/.config/plasma-org.kde.plasma.desktop-appletsrc.backup
reinstall the plasma-desktop to use KDE again:
sudo apt-get reinstall plasma-desktop
Alternatively you can use the dpkg-reconfigure to reconfig your plasma desktop:
sudo dpkg-reconfigure plasma-desktop
This is a problem for some kde updates.
related:
- https://superuser.com/questions/1131728/kde-taskbar-missing/1678301#1678301
- http://bugs.launchpad.net/ubuntu/+source/kdeadmin/+bug/331192/