8086:0126 WARNING: at /build/buildd/linux-3.5.0/drivers/gpu/drm/i915/intel_pm.c:2505 gen6_enable_rps+0x706/0x710 [i915]()

[Andrey Krutov]

I get random freezes after upgrading from 3.5.0-25 to 3.5.0-26 with following messages in dmesg

[12014.658295] ------------[ cut here ]------------
[12014.658359] WARNING: at /build/buildd/linux-3.5.0/drivers/gpu/drm/i915/intel_pm.c:2505 gen6_enable_rps+0x706/0x710 [i915]()
[12014.658363] Hardware name: 4290RV5
[12014.658366] Modules linked in: hidp(O) snd_hrtimer pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables bridge stp llc parport_pc ppdev rfcomm(O) bnep(O) binfmt_misc dm_crypt btusb(O) bluetooth(O) uvcvideo videobuf2_core videodev videobuf2_vmalloc videobuf2_memops snd_hda_codec_hdmi snd_hda_codec_conexant kvm_intel kvm arc4 iwldvm(O) mac80211(O) joydev microcode snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi psmouse snd_rawmidi thinkpad_acpi nvram snd_seq_midi_event snd_seq snd_timer snd_seq_device snd serio_raw mei iwlwifi(O) soundcore snd_page_alloc lpc_ich mac_hid sbs sbshc cfg80211(O) compat(O) coretemp hdaps(O) tp_smapi(O) thinkpad_ec(O) lp parport hid_generic usbhid hid ghash_clmulni_intel cryptd i915 ahci libahci wmi sdhci_pci sdhci e1000e drm_kms_helper drm i2c_algo_bit video
[12014.658453] Pid: 6099, comm: kworker/u:2 Tainted: G O 3.5.0-26-generic #40-Ubuntu
[12014.658454] Call Trace:
[12014.658460] [<ffffffff81051bef>] warn_slowpath_common+0x7f/0xc0
[12014.658462] [<ffffffff81051c4a>] warn_slowpath_null+0x1a/0x20
[12014.658473] [<ffffffffa01172e6>] gen6_enable_rps+0x706/0x710 [i915]
[12014.658483] [<ffffffffa01033f6>] intel_modeset_init_hw+0x66/0xa0 [i915]
[12014.658490] [<ffffffffa00d94b4>] i915_reset+0x1a4/0x6e0 [i915]
[12014.658494] [<ffffffff8101257b>] ? __switch_to+0x12b/0x420
[12014.658501] [<ffffffffa00de943>] i915_error_work_func+0xc3/0x110 [i915]
[12014.658506] [<ffffffff8107097a>] process_one_work+0x12a/0x420
[12014.658514] [<ffffffffa00de880>] ? gen6_pm_rps_work+0xe0/0xe0 [i915]
[12014.658516] [<ffffffff8107152e>] worker_thread+0x12e/0x2f0
[12014.658518] [<ffffffff81071400>] ? manage_workers.isra.26+0x200/0x200
[12014.658520] [<ffffffff81076023>] kthread+0x93/0xa0
[12014.658523] [<ffffffff8168a3e4>] kernel_thread_helper+0x4/0x10
[12014.658526] [<ffffffff81075f90>] ? kthread_freezable_should_stop+0x70/0x70
[12014.658527] [<ffffffff8168a3e0>] ? gs_change+0x13/0x13
[12014.658529] ---[ end trace 16450acffd454982 ]---

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-26-generic 3.5.0-26.40
ProcVersionSignature: Ubuntu 3.5.0-26.40-generic 3.5.7.6
Uname: Linux 3.5.0-26-generic x86_64
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: hedin 2391 F.... pulseaudio
Date: Thu Feb 28 17:40:43 2013
HibernationDevice: RESUME=UUID=411ecfbb-65c8-487d-bbff-50c4e160d54e
InstallationDate: Installed on 2011-09-26 (520 days ago)
InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427)
MachineType: LENOVO 4290RV5
MarkForUpload: True
ProcEnviron:
 LANGUAGE=
 TERM=xterm
 PATH=(custom, no user)
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-26-generic root=UUID=cb4ad55b-69dd-46a7-a4cc-7e3b4f370da6 ro quiet splash i915.i915_enable_rc6=1 i915.lvds_downclock=1 i915_enable_fbc=1 reboot=pci elevator=noop vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-26-generic N/A
 linux-backports-modules-3.5.0-26-generic N/A
 linux-firmware 1.95
SourcePackage: linux
UpgradeStatus: Upgraded to quantal on 2012-11-04 (115 days ago)
dmi.bios.date: 09/15/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET52WW (1.22 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4290RV5
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:bvr8DET52WW(1.22):bd09/15/2011:svnLENOVO:pn4290RV5:pvrThinkPadX220:rvnLENOVO:rn4290RV5:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4290RV5
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.8 kernel[0] (Not a kernel in the daily directory) and install both the linux-image and linux-image-extra .deb packages.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-raring/

[linrunner (linrunner)]

Same problem here on a ThinkPad X220, Ubuntu 12.04 with LTS Enablement Stack and Kernel 3.5.0-26.40~precise1

syslog shows:
Mar 2 12:10:21 xyzzy kernel: [ 537.333056] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Mar 2 12:10:21 xyzzy kernel: [ 537.333060] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
Mar 2 12:10:21 xyzzy kernel: [ 537.342329] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off

I'll test with the mainline kernel later.

[linrunner (linrunner)]

No freezes with mainline 3.8.0-030800.201302181935 so far, neither with 3.5.0-25.39~precise1.

[Andrey Krutov (a-o-krutov)]

See like fixed-upstream.
It is looks like everything OK with
Linux lizard 3.8.0-030800-generic #201302181935 SMP Tue Feb 19 00:36:19 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
There isn't freezes after two days of using.

[Hans (old-man999)]

freezes even with 3.5.24 here.
See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/946899

[Pieter (diepes)]

Is this the same bug ?

https://bugs.freedesktop.org/show_bug.cgi?id=54226
and
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/946899

[penalvch (penalvch)]

Andrey Krutov, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.13-rc1

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.