[sandybridge-m-gt2] False GPU lockup

[lunomad]

Not sure what's going on here. Every time I boot my thinkpad X220 in 12.04 beta, I get several of these apport-gpu errors detected. All of them seem to be false.

[21802.917131] ------------[ cut here ]------------
[21802.917153] WARNING: at /build/buildd/linux-3.2.0/drivers/gpu/drm/i915/i915_drv.c:413 __gen6_gt_wait_for_fifo+0x94/0xa0 [i915]()
[21802.917156] Hardware name: 4286CTO
[21802.917157] Modules linked in: snd_usb_audio snd_usbmidi_lib xc5000 tuner au8522 au0828 dvb_core videobuf_vmalloc videobuf_core tveeprom v4l2_common pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) bnep rfcomm parport_pc ppdev dm_crypt snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel snd_hda_codec arc4 btusb binfmt_misc snd_hwdep bluetooth snd_pcm thinkpad_acpi snd_seq_midi uvcvideo rtl8192ce snd_rawmidi snd_seq_midi_event videodev snd_seq rtl8192c_common v4l2_compat_ioctl32 rtlwifi snd_timer mac80211 joydev snd_seq_device snd cfg80211 snd_page_alloc soundcore mei(C) psmouse mac_hid serio_raw nvram tpm_tis lp parport usbhid hid i915 sdhci_pci sdhci wmi drm_kms_helper drm e1000e i2c_algo_bit video
[21802.917198] Pid: 2023, comm: compiz Tainted: G C O 3.2.0-23-generic #36-Ubuntu
[21802.917200] Call Trace:
[21802.917207] [<ffffffff8106712f>] warn_slowpath_common+0x7f/0xc0
[21802.917210] [<ffffffff8106718a>] warn_slowpath_null+0x1a/0x20
[21802.917218] [<ffffffffa00aa9e4>] __gen6_gt_wait_for_fifo+0x94/0xa0 [i915]
[21802.917226] [<ffffffffa00ab065>] i915_write32+0xe5/0xf0 [i915]
[21802.917251] [<ffffffffa00e7311>] ring_write_tail+0x21/0x30 [i915]
[21802.917267] [<ffffffffa00e9a96>] gen6_render_ring_flush+0xd6/0xf0 [i915]
[21802.917280] [<ffffffffa00c2803>] i915_gem_do_execbuffer.isra.8+0x843/0x940 [i915]
[21802.917285] [<ffffffff8118aac0>] ? __pollwait+0xf0/0xf0
[21802.917297] [<ffffffffa00c2dc3>] i915_gem_execbuffer2+0xa3/0x270 [i915]
[21802.917310] [<ffffffffa00495d4>] drm_ioctl+0x444/0x510 [drm]
[21802.917315] [<ffffffff8118aac0>] ? __pollwait+0xf0/0xf0
[21802.917326] [<ffffffffa00c2d20>] ? i915_gem_execbuffer+0x420/0x420 [i915]
[21802.917332] [<ffffffff8105f990>] ? try_to_wake_up+0x200/0x200
[21802.917336] [<ffffffff81189cfa>] do_vfs_ioctl+0x8a/0x340
[21802.917340] [<ffffffff81177db0>] ? vfs_read+0xb0/0x180
[21802.917344] [<ffffffff8118a041>] sys_ioctl+0x91/0xa0
[21802.917349] [<ffffffff81664a82>] system_call_fastpath+0x16/0x1b
[21802.917352] ---[ end trace 3aef1e16592ea52b ]---
[21808.930980] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[21808.931086] [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 441884 at 441882, next 441885)

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.0.1-0ubuntu2
Architecture: amd64
Chipset: sandybridge-m-gt2
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
Date: Thu Apr 12 00:18:06 2012
DistUpgraded: 2012-04-04 14:56:17,197 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 vboxhost, 4.1.12, 3.2.0-21-generic, x86_64: installed
 vboxhost, 4.1.12, 3.2.0-22-generic, x86_64: installed
 vboxhost, 4.1.12, 3.2.0-23-generic, x86_64: installed
ExecutablePath: /usr/share/apport/apport-gpu-error-intel.py
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:21da]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
InterpreterPath: /usr/bin/python2.7
MachineType: LENOVO 4286CTO
ProcCmdline: /usr/bin/python /usr/share/apport/apport-gpu-error-intel.py
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=9305b0f6-9edb-404e-8533-4b44f1aa37cb ro quiet splash vt.handoff=7
RelatedPackageVersions:
 xserver-xorg 1:7.6+12ubuntu1
 libdrm2 2.4.32-1ubuntu1
 xserver-xorg-video-intel 2:2.17.0-1ubuntu4
SourcePackage: xserver-xorg-video-intel
Title: [sandybridge-m-gt2] False GPU lockup
UpgradeStatus: Upgraded to precise on 2012-04-04 (9 days ago)
UserGroups:

dmi.bios.date: 04/01/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET42WW (1.12 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4286CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr8DET42WW(1.12):bd04/01/2011:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4286CTO
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.7.6-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu35
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.