Bug#508066: xserver-xorg-video-radeon: external display not work on ATI Technologies Inc Radeon Mobility U1

[Robert Heel]

No, no change... The monitor also would display an error message in case of a not supported signal.
Tried ubuntu, too - same problem.

Is there a possibility to deactivate xrandr to switch back to old functionality?

Alex Deucher schrieb:
> Perhaps the mode getting picked for the VGA port is one the card
> doesn't like. Do any other modes on the VGA port work? E.g.:
> xrandr --output VGA-0 --mode 1280x1024
> 
> Alex