Dec  3 11:50:20 ubuntu acpid: client 24921[0:0] has disconnected
Dec  3 11:50:20 ubuntu acpid: client connected from 26242[0:0]
Dec  3 11:50:20 ubuntu acpid: 1 client rule loaded
Dec  3 11:50:21 ubuntu kernel: [255862.239931] ------------[ cut here ]------------
Dec  3 11:50:21 ubuntu kernel: [255862.239949] kernel BUG at /build/buildd/linux-2.6.35/drivers/gpu/drm/i915/i915_gem.c:4221!
Dec  3 11:50:21 ubuntu kernel: [255862.239960] invalid opcode: 0000 [#1] SMP 
Dec  3 11:50:21 ubuntu kernel: [255862.239971] last sysfs file: /sys/devices/virtual/backlight/acpi_video0/actual_brightness
Dec  3 11:50:21 ubuntu kernel: [255862.239981] Modules linked in: snd_seq_dummy nls_iso8859_1 nls_cp437 vfat fat usb_storage binfmt_misc parport_pc ppdev joydev snd_intel8x0 snd_ac97_codec ac97_bus pcmcia snd_pcm snd_seq_midi snd_rawmidi ipw2200 snd_seq_midi_event snd_seq libipw snd_timer snd_seq_device cfg80211 yenta_socket pcmcia_rsrc snd pcmcia_core lib80211 shpchp psmouse soundcore lp serio_raw snd_page_alloc parport i915 drm_kms_helper drm usbhid intel_agp hid i2c_algo_bit via_rhine video mii output agpgart
Dec  3 11:50:21 ubuntu kernel: [255862.240031] 
Dec  3 11:50:21 ubuntu kernel: [255862.240031] Pid: 26242, comm: Xorg Tainted: G        W   2.6.35-23-generic #41-Ubuntu Montara-GML/Montara-GML 
Dec  3 11:50:21 ubuntu kernel: [255862.240031] EIP: 0060:[<f81bf1eb>] EFLAGS: 00013282 CPU: 0
Dec  3 11:50:21 ubuntu kernel: [255862.240031] EIP is at i915_gem_object_unpin+0xbb/0xd0 [i915]
Dec  3 11:50:21 ubuntu kernel: [255862.240031] EAX: f6883cc0 EBX: f69f3000 ECX: 000204ff EDX: fffffff8
Dec  3 11:50:21 ubuntu kernel: [255862.240031] ESI: 00020000 EDI: f71c6000 EBP: f68e3dc8 ESP: f68e3dbc
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Dec  3 11:50:21 ubuntu kernel: [255862.240031] Process Xorg (pid: 26242, ti=f68e2000 task=f68a32c0 task.ti=f68e2000)
Dec  3 11:50:21 ubuntu kernel: [255862.240031] Stack:
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  00000002 00000003 f69ca2c0 f68e3e4c f81c546b f71c6014 02300000 00000000
Dec  3 11:50:21 ubuntu kernel: [255862.240031] <0> 00000004 f6b89600 00000000 fffb7000 f68e3e24 00000001 00000003 00000000
Dec  3 11:50:21 ubuntu kernel: [255862.240031] <0> 02300000 00000003 f69f3014 f69ca2c0 f71c6014 f69ca2c0 00000000 f71c6000
Dec  3 11:50:21 ubuntu kernel: [255862.240031] Call Trace:
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<f81c546b>] ? i915_gem_do_execbuffer+0x71b/0xca0 [i915]
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<f81c5e1a>] ? i915_gem_execbuffer2+0x4a/0x1b0 [i915]
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<f81c5e4c>] ? i915_gem_execbuffer2+0x7c/0x1b0 [i915]
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<f817c98d>] ? drm_ioctl+0x1ad/0x430 [drm]
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<f81c5dd0>] ? i915_gem_execbuffer2+0x0/0x1b0 [i915]
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<c05ccd4d>] ? do_page_fault+0x1cd/0x440
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<c0226a22>] ? vfs_ioctl+0x32/0xb0
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<f817c7e0>] ? drm_ioctl+0x0/0x430 [drm]
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<c02272b9>] ? do_vfs_ioctl+0x79/0x2d0
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<c02187b0>] ? do_sync_write+0x0/0xe0
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<c0227577>] ? sys_ioctl+0x67/0x80
Dec  3 11:50:21 ubuntu kernel: [255862.240031]  [<c05c99f4>] ? syscall_call+0x7/0xb
Dec  3 11:50:21 ubuntu kernel: [255862.240031] Code: d1 8b 50 5c 8d 48 58 8b 70 58 89 56 04 89 32 8b 97 00 10 00 00 89 8f 00 10 00 00 81 c7 fc 0f 00 00 89 78 58 89 50 5c 89 0a eb a7 <0f> 0b eb fe 0f 0b eb fe 8d b6 00 00 00 00 8d bc 27 00 00 00 00 
Dec  3 11:50:21 ubuntu kernel: [255862.240031] EIP: [<f81bf1eb>] i915_gem_object_unpin+0xbb/0xd0 [i915] SS:ESP 0068:f68e3dbc
Dec  3 11:50:21 ubuntu kernel: [255862.240877] ---[ end trace e8d7726d1733c61c ]---
Dec  3 11:54:28 ubuntu acpid: client 26242[0:0] has disconnected
Dec  3 11:54:28 ubuntu kernel: Kernel logging (proc) stopped.