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[Launchpad Bug Tracker <1395220@xxxxxxxxxxxxxxxxxx>]

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

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

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https://bugs.launchpad.net/bugs/1395220

Title:
  Displaylink slow graphic performance on Ubuntu 14.04

Status in xorg package in Ubuntu:
  Expired

Bug description:
  I'm currently trying to use an AOC e1649Fwu screen on my Ubuntu work
  box. It's a DisplayLink screen, and i'm using a slightly modified
  version of this script to have it on after it's plugged in:
  https://wiki.archlinux.org/index.php/DisplayLink/displaylink.sh

  I've however found that performance (of my whole system) is severely
  degraded when using the screen. Within Windows, the device work really
  well, however the monitor connected via the adapter is a little bit
  slow (caused by USB 2.0 bandwidth?) - but whilst using Ubuntu with the
  adapter, my whole system is slow, and specifically in this machine,
  barely usable.

  The performance issue is most noticeable with any Unity animations
  such as opening the launcher or dash, moving screens around.

  Also, some graphic features are buggy / gone:
  - auto-complete boxes of PHPStorm have disappeared - like if they had no content, there's only a line where they should be
  - some Compiz plugins are not working, like the Enhanced Desktop Zoom - when I press win+scroll up to increase zoom, the cursor is gone but nothing is zoomed in. I have to win+scroll down to have the cursor back.
  - also, sometimes I would see glitches in windows, like in Pidgin chat windows.

  I've tried disabling window animations and Dash blur, but they didn't
  help much as there's still a lot of animations throughout the system.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
  Uname: Linux 3.13.0-39-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.5
  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: Fri Nov 21 20:38:57 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation 82Q35 Express Integrated Graphics Controller [8086:29b2] (rev 02) (prog-if 00 [VGA controller])
     Subsystem: Dell OptiPlex 755 [1028:0211]
     Subsystem: Dell OptiPlex 755 [1028:0211]
  InstallationDate: Installed on 2014-11-18 (3 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. OptiPlex 755
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-39-generic root=UUID=14dc1602-50ab-4d72-9a2c-828ce45af7a9 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/04/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A11
  dmi.board.name: 0WX729
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA11:bd08/04/2008:svnDellInc.:pnOptiPlex755:pvr:rvnDellInc.:rn0WX729:rvr:cvnDellInc.:ct3:cvr:
  dmi.product.name: OptiPlex 755
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.2
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.3
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Fri Nov 21 20:23:44 2014
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               16474 
   vendor                                     DEL
  xserver.version: 2:1.15.1-0ubuntu2.1

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