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In this page I am trying to collect all the issues that I solved from time to time, so that I remember how to fix those if needed.
In systems running nvidia graphical cards, sometimes the video driver gets messed up with cached info. To fix this, run the following as normal user while logged in e.g. KDE:
Affected systems so far: <code bash> root@jarjar 11.4 ~> lspci | grep VGA 01:00.0 VGA compatible controller: nVidia Corporation G98 [GeForce 8400 GS] (rev a1) <code>