Comment 12 for bug 198849

Too bad I didn't save a lspci before upgrading the BIOS.
Anyway, I saved a pre BIOS upgrade Xorg.0.log, and the
"PCI Scan" section has only one little difference :

before (bios 202, non working dvi):
(II) PCI: 00:1b:0: chip 8086,293e card 1043,8277 rev 02 class 04,03,00 hdr 00
after (bios 405, working dvi):
(II) PCI: 00:1b:0: chip 8086,293e card 1043,829f rev 02 class 04,03,00 hdr 00

So after bios update, "card 1043,8277" became "card 1043,829f" for this
device. Oddly, this 00:1b seems to be the audio controller:

ben$ lspci -s 00:1b
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio
Controller (rev 02)

Note this is using HDMI-to-DVI, and that on this motherboard, the audio
chipset supports digital audio through HDMI.

Could the audio chipset configuration affect xorg DVI output ?
If so, could this problem find a workaround in kernel/xorg so
users of an older BIOS revision don't hit the bug ?

I attach a more detailed "sudo lspci -vvvxxxx" (with 4 "x" rather than 2,
and 3 "v" rather than 2), that would better show the differences (Kevin,
if you could attach the a "-vvvxxxx" rather than the previously asked
"-vvxx", that'd be nice, thanks).