Desktop broken, cleanup 28.9.2022

To fix a Gnome desktop which is completely broken, the following files can be removed or renamed:

~/.gconf
~/.config
~/.nvidia-settings-rc 
~/.ipython

After the rename/remove action the PC has to be rebooted. The drawback of this 'fix' is that the desktop starts from scratch. However, at least the PC becomes operational again.