For what its worth, running 3.13.7 greatly mitigates this bug, to where the dead time is barely noticeable. It happened three times in short order here and I didn't notice any of them:
[ 4562.551141] [drm:ring_stuck] *ERROR* Kicking stuck semaphore on render ring [ 4582.530028] [drm:ring_stuck] *ERROR* Kicking stuck semaphore on render ring [ 4633.476199] [drm:ring_stuck] *ERROR* Kicking stuck semaphore on render ring -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1140716 Title: [regression] 3.5.0-26-generic and 3.2.0-39-generic GPU hangs on Sandybridge Status in Direct Rendering Infrastructure: In Progress Status in The Linux Kernel: Invalid Status in “linux” package in Ubuntu: Invalid Status in “linux-lts-quantal” package in Ubuntu: Invalid Status in “linux-lts-raring” package in Ubuntu: Invalid Status in “mesa” package in Ubuntu: Triaged Status in “linux” source package in Precise: Invalid Status in “linux-lts-quantal” source package in Precise: Invalid Status in “linux-lts-raring” source package in Precise: Invalid Status in “mesa” source package in Precise: Triaged Status in “linux” source package in Quantal: Invalid Status in “linux-lts-quantal” source package in Quantal: Invalid Status in “linux” source package in Raring: Invalid Status in “linux-lts-quantal” source package in Raring: Invalid Status in “linux” package in Debian: New Status in “linux” package in Fedora: Unknown Bug description: I'm getting errors about GPU hangs every minute or so (usually only when using FF and scrolling a webpage or something). I also get an annoying ubuntu dialog saying there is a "system error". This didn't happen with 3.5.0-24-generic. Here is the dmesg: [15169.033709] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [15169.034517] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off [15628.480216] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [15628.480570] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off [15844.231372] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [15844.231773] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off [20173.232593] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [20173.233211] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off [26285.650393] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [26285.650980] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off [26285.658405] ------------[ cut here ]------------ [26285.658472] WARNING: at /build/buildd/linux-3.5.0/drivers/gpu/drm/i915/intel_pm.c:2505 gen6_enable_rps+0x706/0x710 [i915]() [26285.658474] Hardware name: SATELLITE Z830 [26285.658476] Modules linked in: sdhci_pci sdhci btrfs zlib_deflate libcrc32c ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs reiserfs ext2 snd_hda_codec_hdmi snd_hda_codec_realtek joydev btusb coretemp kvm_intel kvm arc4 ghash_clmulni_intel aesni_intel cryptd aes_x86_64 snd_hda_intel snd_hda_codec snd_hwdep uvcvideo snd_pcm videobuf2_core microcode videodev bnep iwlwifi videobuf2_vmalloc snd_seq_midi psmouse videobuf2_memops snd_rawmidi rfcomm pcspkr snd_seq_midi_event serio_raw snd_seq bluetooth mac80211 snd_timer snd_seq_device i915 drm_kms_helper cfg80211 drm toshiba_acpi snd sparse_keymap soundcore wmi i2c_algo_bit toshiba_bluetooth snd_page_alloc parport_pc mei video mac_hid lpc_ich ppdev nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc lp parport e1000e ahci libahci [last unloaded: sdhci] [26285.658537] Pid: 23433, comm: kworker/u:0 Not tainted 3.5.0-26-generic #40-Ubuntu [26285.658539] Call Trace: [26285.658549] [<ffffffff81051bef>] warn_slowpath_common+0x7f/0xc0 [26285.658553] [<ffffffff81051c4a>] warn_slowpath_null+0x1a/0x20 [26285.658569] [<ffffffffa02d32e6>] gen6_enable_rps+0x706/0x710 [i915] [26285.658584] [<ffffffffa02bf3f6>] intel_modeset_init_hw+0x66/0xa0 [i915] [26285.658595] [<ffffffffa02954b4>] i915_reset+0x1a4/0x6e0 [i915] [26285.658601] [<ffffffff8101257b>] ? __switch_to+0x12b/0x420 [26285.658612] [<ffffffffa029a943>] i915_error_work_func+0xc3/0x110 [i915] [26285.658618] [<ffffffff8107097a>] process_one_work+0x12a/0x420 [26285.658629] [<ffffffffa029a880>] ? gen6_pm_rps_work+0xe0/0xe0 [i915] [26285.658632] [<ffffffff8107152e>] worker_thread+0x12e/0x2f0 [26285.658636] [<ffffffff81071400>] ? manage_workers.isra.26+0x200/0x200 [26285.658640] [<ffffffff81076023>] kthread+0x93/0xa0 [26285.658644] [<ffffffff8168a3e4>] kernel_thread_helper+0x4/0x10 [26285.658649] [<ffffffff81075f90>] ? kthread_freezable_should_stop+0x70/0x70 [26285.658652] [<ffffffff8168a3e0>] ? gs_change+0x13/0x13 [26285.658654] ---[ end trace 59c6162fdfcbffee ]--- [26756.021167] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [26756.021426] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off [26766.014093] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [26766.014397] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off [26932.376233] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [26932.376544] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off [26932.384285] ------------[ cut here ]------------ [26932.384354] WARNING: at /build/buildd/linux-3.5.0/drivers/gpu/drm/i915/intel_pm.c:2505 gen6_enable_rps+0x706/0x710 [i915]() [26932.384356] Hardware name: SATELLITE Z830 [26932.384358] Modules linked in: sdhci_pci sdhci btrfs zlib_deflate libcrc32c ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs reiserfs ext2 snd_hda_codec_hdmi snd_hda_codec_realtek joydev btusb coretemp kvm_intel kvm arc4 ghash_clmulni_intel aesni_intel cryptd aes_x86_64 snd_hda_intel snd_hda_codec snd_hwdep uvcvideo snd_pcm videobuf2_core microcode videodev bnep iwlwifi videobuf2_vmalloc snd_seq_midi psmouse videobuf2_memops snd_rawmidi rfcomm pcspkr snd_seq_midi_event serio_raw snd_seq bluetooth mac80211 snd_timer snd_seq_device i915 drm_kms_helper cfg80211 drm toshiba_acpi snd sparse_keymap soundcore wmi i2c_algo_bit toshiba_bluetooth snd_page_alloc parport_pc mei video mac_hid lpc_ich ppdev nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc lp parport e1000e ahci libahci [last unloaded: sdhci] [26932.384421] Pid: 24262, comm: kworker/u:2 Tainted: G W 3.5.0-26-generic #40-Ubuntu [26932.384422] Call Trace: [26932.384431] [<ffffffff81051bef>] warn_slowpath_common+0x7f/0xc0 [26932.384436] [<ffffffff81051c4a>] warn_slowpath_null+0x1a/0x20 [26932.384451] [<ffffffffa02d32e6>] gen6_enable_rps+0x706/0x710 [i915] [26932.384466] [<ffffffffa02bf3f6>] intel_modeset_init_hw+0x66/0xa0 [i915] [26932.384476] [<ffffffffa02954b4>] i915_reset+0x1a4/0x6e0 [i915] [26932.384482] [<ffffffff8101257b>] ? __switch_to+0x12b/0x420 [26932.384493] [<ffffffffa029a943>] i915_error_work_func+0xc3/0x110 [i915] [26932.384500] [<ffffffff8107097a>] process_one_work+0x12a/0x420 [26932.384511] [<ffffffffa029a880>] ? gen6_pm_rps_work+0xe0/0xe0 [i915] [26932.384514] [<ffffffff8107152e>] worker_thread+0x12e/0x2f0 [26932.384517] [<ffffffff81071400>] ? manage_workers.isra.26+0x200/0x200 [26932.384521] [<ffffffff81076023>] kthread+0x93/0xa0 [26932.384526] [<ffffffff8168a3e4>] kernel_thread_helper+0x4/0x10 [26932.384531] [<ffffffff81075f90>] ? kthread_freezable_should_stop+0x70/0x70 [26932.384534] [<ffffffff8168a3e0>] ? gs_change+0x13/0x13 [26932.384536] ---[ end trace 59c6162fdfcbffef ]--- 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: luca 2084 F.... pulseaudio CheckboxSubmission: f8b82cd9bc23fe075e5068a9824afda5 CheckboxSystem: b1865df84255b8716d3bcc269ff410d1 Date: Sat Mar 2 22:25:14 2013 HibernationDevice: RESUME=UUID=20fe6da8-7d68-4660-953f-6e4ae1d348a7 InstallationDate: Installed on 2012-04-26 (310 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MachineType: TOSHIBA SATELLITE Z830 MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-26-generic root=UUID=36929bf3-a158-44d9-a80d-3adac2840fa8 ro quiet splash acpi_backlight=vendor i915.i915_enable_rc6=1 i915.lvds_downclock=1 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 2012-10-28 (125 days ago) dmi.bios.date: 07/31/2012 dmi.bios.vendor: TOSHIBA dmi.bios.version: Version 1.70 dmi.board.asset.tag: 0000000000 dmi.board.name: Portable PC dmi.board.vendor: TOSHIBA dmi.board.version: Version A0 dmi.chassis.asset.tag: 0000000000 dmi.chassis.type: 10 dmi.chassis.vendor: TOSHIBA dmi.chassis.version: Version 1.0 dmi.modalias: dmi:bvnTOSHIBA:bvrVersion1.70:bd07/31/2012:svnTOSHIBA:pnSATELLITEZ830:pvrPT22LE-00300GGR:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0: dmi.product.name: SATELLITE Z830 dmi.product.version: PT22LE-00300GGR dmi.sys.vendor: TOSHIBA To manage notifications about this bug go to: https://bugs.launchpad.net/dri/+bug/1140716/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
