Most nem azert, de szerintem inkab:

Section "Device"
Identifier "device1"
VendorName "nVidia Corporation"
BoardName "NVIDIA GeForce 6800 (generic)"
Driver "nvidia"

Option "DPMS" "true"
Option "RenderAccel" "true"
Option "AllowGLXWithComposite" "true"
Option "MonitorLayout" "DFP"
Option "NoRenderExtension" "Off"
Option "RandRRotation" "on"
EndSection

es aztan a

~ $ xrandr --help
usage: xrandr [options]
where options are:
-display <display> or -d <display>
-help
-o <normal,inverted,left,right,0,1,2,3>
or --orientation <normal,inverted,left,right,0,1,2,3>
-q or --query
-s <size>/<width>x<height> or --size <size>/<width>x<height>
-r <rate> or --rate <rate>
-v or --version
-x (reflect in x)
-y (reflect in y)
--screen <screen>
--verbose

alapjan

xrandr -o normal v, xrandr -o 0
...

legalabbis nvidianal