Bug#420628: xserver-xorg-core: mergeFB does not work anymore with ati drivers
Eric Valette wrote:
> The same config file was working with previous version. Th problem is that it
> find non compatible mode between LVDS and external monitor while it was finding one previouly. As a result, the display on LCD is only partial as resolution is 1280x1024, wre the virtual is 1400x1050.
xserver-xorg-core 1.3 breaks some things in the ATI driver. So you'll
have to wait for the next release of the ATI driver, or revert to the
old xserver-xorg-core 1.1.1 (still in testing or stable/etch). Also, you
could possibly try with the 6.6.191 ATI driver currently in experimental
just in case, but I guess it will not change anything.