Intel® G31 + ICH7 Chipset

uname -m = i686

pkg-config --modversion libdrm = 2.4.17

X.Org X Server 1.7.5.901 (1.7.6 RC 1)

Usable kernel =  2.6.31.12-174.2.22.fc12.i686

Not usable kernels:
2.6.32.9-67
2.6.32.9-70.fc12.i686
2.6.33-0.52.rc8 (F13 Alpha)

System: Fedora 12 (Unmodified)

Motherboard = GIGABYTE GA-G31M-ES2L
(Integrated Intel Graphics Media Accelerator 3100 (Intel GMA 3100) )

VGA connector

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GPU hangs, black screen, keyboard dead - a few seconds after entering password and pressing <Enter>. Before blackout, can see desktop being drawn (does not complete login).

1) Runlevel 3 + startx gives same result.

2) Sometimes the system freezes before the login screen is shown (rare).

3) If I'm quick enough after entering my password and pressing <Enter>, I can start tty4, wait until the disk stops making noise, and then return to tty1 with a working desktop. Logging out from this state usually freezes the system.

4) Fedora 13 Alpha: Graphical install hangs after a "Basic Storage Device" selection, Basic video install says (+/-) "x startup failed, going to text mode".

5) In /var/log/messages
localhost kernel: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Mar 15 10:57:19 localhost kernel: render error detected, EIR: 0x00000000
Mar 15 10:57:19 localhost kernel: [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 1036 at 1033)

6) Even though system appeared hung, was able to ssh to computer. Got an intel_gpu_dump.