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[Simon Déziel <1530591@xxxxxxxxxxxxxxxxxx>]

The graphic performance is really below what the same laptop was capable
with Trusty. Under Xenial, I'm unable to smoothly scroll down/up a
simple HTML page with Firefox.

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https://bugs.launchpad.net/bugs/1530591

Title:
  Frequent crash after graphical corruption

Status in linux package in Ubuntu:
  New

Bug description:
  My Thinkpad T410 is frequently crashing since I'm running Xenial.
  Preceeding a crash, an almost entirely blank screen is displayed for a
  few seconds, then the laptop shuts down.

  I couldn't identify/correlate the crash with anything special I'm
  doing, it just happens after some time of uptime. dmesg contains this:

    [  809.484253] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
    [  809.484303] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun

  So maybe it's related to
  https://bugs.freedesktop.org/show_bug.cgi?id=89806

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-generic 4.3.0.5.6
  ProcVersionSignature: Ubuntu 4.3.0-5.16-generic 4.3.3
  Uname: Linux 4.3.0-5-generic x86_64
  ApportVersion: 2.19.3-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  simon      3016 F.... pulseaudio
  Date: Sat Jan  2 17:57:34 2016
  HibernationDevice: RESUME=/dev/mapper/crypt-swap
  MachineType: LENOVO 2516CTO
  ProcEnviron:
   LANGUAGE=en_CA:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_CA.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.3.0-5-generic root=/dev/mapper/crypt-xroot ro splash cryptopts=target=crypt,source=/dev/sda1,lvm=crypt-root possible_cpus=4 nmi_watchdog=0 vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.3.0-5-generic N/A
   linux-backports-modules-4.3.0-5-generic  N/A
   linux-firmware                           1.154
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/14/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6IET85WW (1.45 )
  dmi.board.name: 2516CTO
  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:bvr6IET85WW(1.45):bd02/14/2013:svnLENOVO:pn2516CTO:pvrThinkPadT410:rvnLENOVO:rn2516CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2516CTO
  dmi.product.version: ThinkPad T410
  dmi.sys.vendor: LENOVO

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