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[Krzysztof Drewniak <1386721@xxxxxxxxxxxxxxxxxx>]

Installing xorg-edgers improves general graphics performance, but there
is still some tearing when playing games.

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https://bugs.launchpad.net/bugs/1386721

Title:
  Graphics Slow After Upgrade 14.04 - 14.10

Status in xorg package in Ubuntu:
  Confirmed

Bug description:
  Using Gnome Ubuntu 14.10, Dell XPS 13, intel 915 Graphics

  After upgrading from 14.04 to 14.10 there are a lot of places where
  the graphics are working much slower than they were before:

  - Gnome Shell Interface is very sluggish, visible "chops" (redrawing)
  when pressing the [Super] key.

  - Selecting text in Gedit takes a full second pr. line

  Experiences some subjective improvement when I booted kernel 3.13.0-37
  instead of 3.16.0-23, but that may be my imagination as the problem
  persists.

  I've searched google, forums, found a couple of relevant links that
  point to the issue being the Intel drivers.

      http://askubuntu.com/questions/53962...E2%86%92-14-10
      http://www.webupd8.org/2014/10/ubunt...ent-1652086424

  But the drivers currently in 14.10 should be newer than those supplied
  by Intel to 14.04 so that doesn't make sense to me. As one Intel
  developer wrote:

  "I would like to point out that since what we do is bring more ecent
  versions of the software to the target distributions than they ship
  with, a 14.04 targeted installer is unlikely to bring much to a 14.10
  installation, which most likely has the same or more recent versions
  already anyway."

  Source: https://01.org/linuxgraphics/node/375

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: xorg 1:7.7+7ubuntu2
  ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
  Uname: Linux 3.16.0-23-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME
  Date: Tue Oct 28 15:24:30 2014
  DistUpgraded: 2014-10-25 20:59:36,052 DEBUG enabling apt cron job
  DistroCodename: utopic
  DistroVariant: ubuntu
  DkmsStatus: i915-3.15-3.13, 0.01, 3.13.0-37-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:060a]
  InstallationDate: Installed on 2014-06-14 (135 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
  MachineType: Dell Inc. XPS13 9333
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic root=UUID=105bbbd1-365e-4063-bdca-fc5431faf5dc ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: Upgraded to utopic on 2014-10-25 (2 days ago)
  dmi.bios.date: 12/11/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A02
  dmi.board.name: 0GFTRT
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA02:bd12/11/2013:svnDellInc.:pnXPS139333:pvr:rvnDellInc.:rn0GFTRT:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: XPS13 9333
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz N/A
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.56-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu3
  version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
  xserver.bootTime: Tue Oct 28 13:44:57 2014
  xserver.configfile: default
  xserver.errors:

  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                4933
   vendor                                     CMN
  xserver.version: 2:1.16.0-1ubuntu1

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