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[Bug 1135759] Re: 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, 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:

where VERSION-NUMBER is the version number of the kernel you tested. For example:

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:

If the mainline kernel does not fix this bug, please add the following tags:

As well, please remove the tag:

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

** This bug is no longer a duplicate of bug 946899
   8086:2a02 [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

** Tags added: bios-outdated-1.38

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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  8086:0126 WARNING: at
  gen6_enable_rps+0x706/0x710 [i915]()

Status in “linux” package in Ubuntu:

Bug description:
  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
  Uname: Linux 3.5.0-26-generic x86_64
  ApportVersion: 2.6.1-0ubuntu10
  Architecture: amd64
   /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
   PATH=(custom, no user)
  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
   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

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