Comment 30 for bug 68440

Seeing the same on an intel D945GCLF motherboard (atom CPU) with 945 chipset.

The issue looks very similar to the issues that I've had with nvidia graphics adapters when using xen over the last year or more. The problem there, as is clearly communicated by nvidia, is that Xen has no support for AGP / GART. Nvidia has patched drivers that work.

Comparing Xorg log files between xen (not-working) and non-xen (working) boots, I can see that the last line in the non-functional scenario is indeed:

(II) intel(0): xf86BindGARTMemory: bind key 0 at 0x01000000 (pgoffset 4096)

in the working scenario (non-xen), this line is followed by many more lines.