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[Alberto Salvia Novella <es20490446e@xxxxxxxxx>]

** Changed in: xserver-xorg-video-intel (Ubuntu)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1451632

Title:
  drm:intel_cpu_fifo_underrun_irq_handler [i915] - complete lockups

Status in xserver-xorg-video-intel package in Ubuntu:
  Confirmed

Bug description:
  After updating to vivid, I'm experiencing lockups when visiting
  certain pages (not sure if it's flash-enabled) with chromium-browser.

  I see the following in the syslog matching the corresponding time (but
  don't know whether it's the cause):

  May  5 11:11:42 michael-acer kernel: [16951.714263] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe A
  May  5 11:11:42 michael-acer kernel: [16951.714344] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
  May  5 11:11:49 michael-acer org.freedesktop.Notifications[1833]: ** (notify-osd:2671): WARNING **: dnd_is_screensaver_active(): Got error "Did 
  not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, th
  e reply timeout expired, or the network connection was broken."
  May  5 11:11:52 michael-acer dbus[759]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop
  .nm-dispatcher.service'

  Let me know if I can provide more info.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Tue May  5 11:35:03 2015
  DistUpgraded: 2015-05-02 09:55:23,389 DEBUG enabling apt cron job
  DistroCodename: vivid
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a06] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Acer Incorporated [ALI] Device [1025:0a11]
  InstallationDate: Installed on 2014-09-03 (243 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Acer Peppy
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-15-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash tpm_tis.force=1 vt.handoff=7
  SourcePackage: xserver-xorg-video-intel
  UpgradeStatus: Upgraded to vivid on 2015-05-01 (3 days ago)
  dmi.bios.date: 10/18/2013
  dmi.bios.vendor: coreboot
  dmi.chassis.type: 3
  dmi.chassis.vendor: Acer
  dmi.modalias: dmi:bvncoreboot:bvr:bd10/18/2013:svnAcer:pnPeppy:pvr1.0:cvnAcer:ct3:cvr:
  dmi.product.name: Peppy
  dmi.product.version: 1.0
  dmi.sys.vendor: Acer
  version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Tue May  5 11:18:54 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                4402 
   vendor                                     CMN
  xserver.version: 2:1.17.1-0ubuntu3

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