Try looking at ~/.xsession-errors just after things go black to see
if
there's anything interesting.
I find this:
xset: bad font path element (#2), possible causes are:
Directory does not exist or has wrong permissions
Directory missing fonts.dir
Incorrect font server address or syntax
startkde: Starting up...
vmware-user: could not open /proc/fs/vmblock/dev
Already running
abrt-applet: Impossible d'afficher la notification :
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
org.freedesktop.Notifications was not provided b>
abrt-applet: Impossible d'afficher la notification :
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
org.freedesktop.Notifications was not provided b>
...
KCrash: Attempting to start /usr/bin/plasmashell from kdeinit
KCrash: Application 'plasmashell' crashing...
KCrash: Attempting to start /usr/libexec/drkonqi from kdeinit
full .xsession-errors attached.
Frédéric