Probeer eens met dit
gksudo displayconfig-gtk
instellingen voor xserver zijn blijkbaar niet meer in te stellen met xorg.conf
Het volgende gevonden in de doc bij xserver
Don't write the default depth to xorg.conf any more.
The drivers should choose the appropriate depth by default now.
* Don't bother with resolutions in xorg.conf
We now rely on the server and drivers to do the right thing. Previously,
our best-case scenario was to have the xserver-xorg postinstall script ask
the monitor what the optimal values were, and if that wasn't possible to
give the user a default list of resolutions and a best-guess hsync and
vrefresh values that the user could override. The server and almost all
drivers will do this on boot anyway using properly maintained code, which
allows them to better adapt to changes. randr 1.2-compliant drivers will
do this even better than we possibly could. Finally, the server will
provide a better list of defaults than we were doing anyway. There will
undoubtedly be bugs uncovered by this change, but we need to find and fix
the actual bugs in the drivers and server in order to move forward.
+ Don't recommend xresprobe any more
+ Don't recommend laptop-detect any more or look for it in server postinst
in een ander stukje dit
+ xserver-xorg: Recommends displayconfig-gtk
