Description of problem:
This is a quote from a description by Ivan posted on axp-list:
I had couple of problems with 4.3.0:
- Detection of the primary adapter is broken. You have to
set explicit PCI id in XF86Config to get the card detected
as *secondary*. However, switching to VGA text console won't work then
(most drivers don't save/restore VGA state for secondary adapters).
- Rather old bug in mga driver (since 4.1.0, IIRC) - the driver
attempts to read the video ROM *before* enabling it. Naturally,
this causes annoying machine check on certain platforms.
Nominally on Alpha but it looks from the code that it will really affect
all platforms. His patch attached.
Created attachment 91995 [details]
patch for issues in X 4.0.3
Applied to 4.3.0-15 on all-arches.