So, the problem can be summarised as follows: Login using ‘graphical boot’ (runlevel 5) and KDM – everything works correctly. Login using ‘multi-user boot’ (runlevel 3) and then use # startx to run KDE – USB disk mounts fail with “… Not Authorized” I use a non-graphical login (runlevel 3) and then run # startx, as this … Continue reading →