Comment 82 for bug 333386

I can understand that. No it makes no difference from which kernel this is run.
To be exact, it was somehow working as Linux did not check the information in
the DSDT close enough. So GFX0 might be the right device to look at but it
points to another pci device (supposedly one that does not exist) and newer
kernels back off then. As I understand the issue, the problem is that in
general the same ACPI BIOS is used for all different hardware configurations.
So often it contains several video devices but only some are really present.
For that reason the kernel code was added. In this case it seems to have broken
a case which worked before.