*** This bug is a duplicate of bug 1550779 ***
    https://bugs.launchpad.net/bugs/1550779

Status changed to 'Confirmed' because the bug affects multiple users.

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

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https://bugs.launchpad.net/bugs/1825823

Title:
  [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A
  FIFO underrun

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  [96438.988610] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU 
pipe A FIFO underrun
  [96438.988650] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* 
uncleared pch fifo underrun on pch transcoder A
  [96438.988669] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH 
transcoder A FIFO underrun

  
  I've noticed i915 errors in dmesg -w

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: xorg 1:7.7+19ubuntu7.1
  ProcVersionSignature: Ubuntu 4.15.0-47.50-generic 4.15.18
  Uname: Linux 4.15.0-47-generic x86_64
  .tmp.unity_support_test.0:
   
  ApportVersion: 2.20.9-0ubuntu7.6
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Apr 22 15:02:21 2019
  DistUpgraded: 2018-08-21 10:26:09,893 DEBUG Running PostInstallScript: 
'./xorg_fix_proprietary.py'
  DistroCodename: bionic
  DistroVariant: ubuntu
  DkmsStatus:
   anbox, 1, 4.15.0-46-generic, x86_64: installed
   anbox, 1, 4.15.0-47-generic, x86_64: installed
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics 
Controller [8086:0102] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. 2nd Generation Core Processor Family 
Integrated Graphics Controller [1043:84ca]
  InstallationDate: Installed on 2015-08-23 (1337 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  MachineType: System manufacturer System Product Name
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-47-generic 
root=UUID=155c3c3c-daa6-414c-ac3d-0f8c492592c0 ro quiet splash vt.handoff=1
  SourcePackage: xorg
  UpgradeStatus: Upgraded to bionic on 2018-08-21 (244 days ago)
  dmi.bios.date: 07/21/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 2501
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: P8Z77-V LX
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr2501:bd07/21/2014:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8Z77-VLX:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.family: To be filled by O.E.M.
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
  version.libdrm2: libdrm2 2.4.95-1~18.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.8-0ubuntu0~18.04.2
  version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.8-0ubuntu0~18.04.2
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20171229-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
  xserver.bootTime: Mon Aug 20 17:24:57 2018
  xserver.configfile: default
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   
  xserver.version: 2:1.18.4-0ubuntu0.7

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