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[Launchpad Bug Tracker <1435131@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

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

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https://bugs.launchpad.net/bugs/1435131

Title:
  [drm:stop_ring [i915]] *ERROR* render ring : timed out trying to stop
  ring

Status in linux package in Ubuntu:
  Expired

Bug description:
  I have quite a lot of these and they look bad.

  The machine is sometimes abruptly powering off, has suspend/resume
  failures, and reliability issues with the Intel HD5500 X driver.

  Here is context:

  Mar 22 07:43:56 raven kernel: [ 1698.857711] PM: Preparing system for mem sleep
  Mar 22 07:43:56 raven kernel: [ 1698.858208] Freezing user space processes ... (elapsed 0.205 seconds) done.
  Mar 22 07:43:56 raven kernel: [ 1699.064161] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
  Mar 22 07:43:56 raven kernel: [ 1699.065656] PM: Entering mem sleep
  Mar 22 07:43:56 raven kernel: [ 1699.065682] Suspending console(s) (use no_console_suspend to debug)
  Mar 22 07:43:56 raven kernel: [ 1699.067510] sd 2:0:0:0: [sdb] Synchronizing SCSI cache
  Mar 22 07:43:56 raven kernel: [ 1699.067534] sd 0:0:0:0: [sda] Synchronizing SCSI cache
  Mar 22 07:43:56 raven kernel: [ 1699.070280] sd 0:0:0:0: [sda] Stopping disk
  Mar 22 07:43:56 raven kernel: [ 1699.071291] sd 2:0:0:0: [sdb] Stopping disk
  Mar 22 07:43:56 raven kernel: [ 1699.268598] e1000e: EEE TX LPI TIMER: 00000011
  Mar 22 07:43:56 raven kernel: [ 1700.280816] [drm:stop_ring [i915]] *ERROR* render ring : timed out trying to stop ring
  Mar 22 07:43:56 raven kernel: [ 1700.616959] PM: suspend of devices complete after 1550.168 msecs
  Mar 22 07:43:56 raven kernel: [ 1700.657049] PM: late suspend of devices complete after 40.049 msecs
  Mar 22 07:43:56 raven kernel: [ 1700.659950] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI
  Mar 22 07:43:56 raven kernel: [ 1700.660144] xhci_hcd 0000:00:14.0: System wakeup enabled by ACPI
  Mar 22 07:43:56 raven kernel: [ 1700.673474] PM: noirq suspend of devices complete after 16.411 msecs
  Mar 22 07:43:56 raven kernel: [ 1700.674084] ACPI: Preparing to enter system sleep state S3
  Mar 22 07:43:56 raven kernel: [ 1700.816951] PM: Saving platform NVS memory
  Mar 22 07:43:56 raven kernel: [ 1700.816961] Disabling non-boot CPUs ...
  Mar 22 07:43:56 raven kernel: [ 1700.816994] intel_pstate CPU 1 exiting
  Mar 22 07:43:56 raven kernel: [ 1700.818362] kvm: disabling virtualization on CPU1
  Mar 22 07:43:56 raven kernel: [ 1700.818377] smpboot: CPU 1 is now offline
  Mar 22 07:43:56 raven kernel: [ 1700.819964] intel_pstate CPU 2 exiting
  Mar 22 07:43:56 raven kernel: [ 1700.821291] kvm: disabling virtualization on CPU2
  Mar 22 07:43:56 raven kernel: [ 1700.822331] smpboot: CPU 2 is now offline
  Mar 22 07:43:56 raven kernel: [ 1700.822852] intel_pstate CPU 3 exiting
  Mar 22 07:43:56 raven kernel: [ 1700.823049] Broke affinity for irq 23
  Mar 22 07:43:56 raven kernel: [ 1700.823058] Broke affinity for irq 44
  Mar 22 07:43:56 raven kernel: [ 1700.824085] kvm: disabling virtualization on CPU3
  Mar 22 07:43:56 raven kernel: [ 1700.824103] smpboot: CPU 3 is now offline

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-9-generic 3.19.0-9.9
  ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
  Uname: Linux 3.19.0-9-generic x86_64
  ApportVersion: 2.16.2-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  shevek     2677 F.... pulseaudio
   /dev/snd/controlC0:  shevek     2677 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Sun Mar 22 20:42:40 2015
  HibernationDevice: RESUME=UUID=cd97b65a-0d29-4887-a0e6-7c9eea8707b0
  InstallationDate: Installed on 2015-03-05 (17 days ago)
  InstallationMedia: Xubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  MachineType: LENOVO 20CKCTO1WW
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-9-generic.efi.signed root=/dev/mapper/xubuntu--vg-root ro quiet splash crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-9-generic N/A
   linux-backports-modules-3.19.0-9-generic  N/A
   linux-firmware                            1.143
  SourcePackage: linux
  UpgradeStatus: Upgraded to vivid on 2015-03-19 (3 days ago)
  dmi.bios.date: 12/26/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N11ET29W (1.05 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20CKCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0E50512 STD
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: dmi:bvnLENOVO:bvrN11ET29W(1.05):bd12/26/2014:svnLENOVO:pn20CKCTO1WW:pvrThinkPadT550:rvnLENOVO:rn20CKCTO1WW:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20CKCTO1WW
  dmi.product.version: ThinkPad T550
  dmi.sys.vendor: LENOVO

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