Intel 965Q lockup

[Lieven Buts]

I am working on a Dell OptiPlex 745 desktop with a
"82Q963/Q965 Integrated Graphics Controller". It came
configured with OpenSuSE 10.2, using the VESA framebuffer
device (fbdev) for X.org 7.2RC2, and I am trying to set 
up hardware-accelerated graphics.

I kept the agpgart module from the installed 2.6.18.8
kernel, and updated the following components from git
sources:
   - drm.ko and i915.ko kernel DRM modules
   - libdrm-2.3.0
   - i965_dri.so
   - X.org to xserver-1.3.0, with xf86-video-intel driver,
     built by pulling git sources using "git_xorg.sh",
     followed by "utils/modular/build.sh" and commenting
     out modules that were unnecessary or would not build

The new X server was installed in a separate location, to
preserve the original one. After starting the new server,
things work for a while, but while clicking around in some
programs, the X server froze up with the following message
at the tail of the log file:

----------------------------------
Error in I830WaitLpRing(), now is -1640585256, start is -1640587257
pgetbl_ctl: 0x3ff80001 pgetbl_err: 0x0
ipeir: 0 iphdr: 0
LP ring tail: 1d928 head: 1cd10 len: 1f001 start 0
eir: 0 esr: 1 emr: ffdf
instdone: 0 instpm: 0
memmode: 0 instps: 0
hwstam: cffe ier: 82 imr: 0 iir: 40
space: 127968 wanted 131064
(II) intel(0): [drm] removed 1 reserved context for kernel
(II) intel(0): [drm] unmapping 8192 bytes of SAREA 0x1efff000 at 
0x2b965869e000
(II) intel(0): [drm] Closed DRM master.

Fatal server error:
lockup

(II) AIGLX: Suspending AIGLX clients for VT switch
Error in I830WaitLpRing(), now is -1640583215, start is -1640585216
pgetbl_ctl: 0x3ff80001 pgetbl_err: 0x0
ipeir: 0 iphdr: 0
LP ring tail: 1d930 head: 1cd10 len: 1f001 start 0
eir: 0 esr: 1 emr: ffdf
instdone: 0 instpm: 0
memmode: 0 instps: 0
hwstam: cffe ier: 82 imr: 0 iir: 40
space: 127960 wanted 131064

FatalError re-entered, aborting
lockup
----------------------------------

The full log file and xorg.conf can be found at
http://ultr23.vub.ac.be/~lieven/965/Xorg.0.log-1
http://ultr23.vub.ac.be/~lieven/965/xorg.conf-1

Also, the Ctrl-Alt-Fn and Ctrl-Alt-Backspace key
combinations don't work anymore, but that may be 
unrelated.

So for now, it's back to the framebuffer. Any suggestions
on how to proceed would be appreciated.

Cheers,

-- 
Lieven Buts
Ultrastructure Laboratory
Vrije Universiteit Brussel