xf86-video-ati: version > 6.9.0 does not work on Lenovo T400 when docked

[Sascha Steinbiss]

Hi everyone,

I am unsure where to turn to in this matter, but it seems I have 
encountered an issue in the current version of the xf86-video-ati module.

I have a Lenovo T400 with a "ATI Technologies Inc Mobility Radeon HD 
3400 Series rev 0" graphics chip. Usually I boot up with the machine in 
the dock, and use the DVI output there to drive a Samsung 24" display 
(multi-head via xrandr).

Version 6.9.0 works like a charm (though unaccelerated). However, using 
any later version (tested with the 6.9.0.91 and 6.10.0 versions from the 
Arch testing repository), when I boot up with the laptop docked all X 
does is cycle through uniformly colored full screens on the internal 
display (white->red->green->blue->grey->vertical black/white 
gradient->horizontal black/white gradient), and the external DVI output 
is ignored. The same happens when I boot up undocked, then put the 
laptop in the dock and use xrandr to enable the DVI out.

I attach my xorg.conf for debugging. Do you need any more information? 
Should I file a bug in the bugzilla? Is this even the right place to 
ask? If not, then I would be happy to get a pointer in the right direction.

Thanks a lot in advance,
Sascha