Created attachment 23139 [details] dmesg My system: 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c) kernel: airlied's drm-fixed branch as of 2009-02-20 (commit: ** author etienne <etienne.basset@numericable.fr> Thu, 19 Feb 2009 23:44:45 +0000 (09:44 +1000) drm/radeon: update sarea copies of last_ variables on resume. ** ) From debian experimental: xserver 1.5.99.902 mesa 7.3 libdrm 2.4.4+git+20090205 intel 2.6.1 Acceleration: UXA VT switch and suspend to disk are broken. Even restarting or shutting down from X (KDE) makes the system freeze with a black screen. Attached are dmesg taken (by ssh) after rebooting from KDE and Xorg.log. According to the dmesg output, the problem seems to be: BUG: unable to handle kernel NULL pointer dereference at 00000050 IP: [<f87a009d>] i915_gem_cleanup_hws+0x1d/0x70 [i915] I have used git-bisect and found that the first bad commit is: ** author Chris Wilson <chris@chris-wilson.co.uk> Wed, 11 Feb 2009 14:52:44 +0000 (14:52 +0000) commit 85a7bb98582b60b7e9130159d2464eb0bbac13f7 drm/i915: Cleanup the hws on ringbuffer constrution failure. If we fail to create the ringbuffer, then we need to cleanup the allocated hws. ** Reverting this single commit makes everything work again. regards, Stefano
Created attachment 23140 [details] Xorg log
Fixed by the patch in: http://lists.freedesktop.org/archives/intel-gfx/2009-February/001460.html
Queued in for-airlied: commit 99d31f896d243c13bb90b56620d33b416a5cffa7 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Fri Feb 20 17:52:20 2009 +0000 drm/i915: Fix regression in 95ca9d The object is dereferenced before the NULL check. Oops. Fixes http://bugs.freedesktop.org/show_bug.cgi?id=20235 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Eric Anholt <eric@anholt.net>
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