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[Hannes Bochmann <hannes.bochmann@xxxxxxxxx>]

Only one monitor is plugged into the DisplayLink docking station so I
think the limitation of two monitors is not the problem. If I deactivate
the internal laptop monitor or the monitor plugged directly into the
laptop nothing changes. The mouse keeps flickering on the monitor that
is not connected to the docking station.

Thanks for the advice using the support forum of DisplayLink. The bug
was already reported
(http://www.displaylink.org/forum/showthread.php?p=79054#post79054). The
only "solution" they came up with is switching from Unity to another
desktop environment like gnome or metacity. As I like the Unity Dock
Launcher this is not a real option for me.

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Packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1511244

Title:
  Mouse pointer flickers at using DisplayLink

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  Using the new official DisplayLink driver for Ubuntu from
  http://www.displaylink.com/downloads/ubuntu.php for my USB-
  DisplayLink-Adapter causes on the two main monitors (DisplayPort and
  internal monitor) a flickering mouse. The pointer doesn't flicker on
  third monitor (DisplayLink monitor).

  This also seems to be related to this bug:
  https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1485682

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8.1
  ProcVersionSignature: Ubuntu 3.19.0-31.36~14.04.1-generic 3.19.8-ckt7
  Uname: Linux 3.19.0-31-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.18
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
  Date: Thu Oct 29 08:29:50 2015
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:503c]
  InstallationDate: Installed on 2015-09-25 (33 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  MachineType: LENOVO 20DT0003GE
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-31-generic root=UUID=500f2ef6-7426-42ec-9fe2-88dddde9bcea ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/25/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: JDET50WW (1.12 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: Intel powered classmate PC
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0E50510 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: dmi:bvnLENOVO:bvrJDET50WW(1.12):bd03/25/2015:svnLENOVO:pn20DT0003GE:pvrThinkPadL450:rvnLENOVO:rnIntelpoweredclassmatePC:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20DT0003GE
  dmi.product.version: ThinkPad L450
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2~ubuntu14.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.5
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.5
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.7
  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 2:2.99.910-0ubuntu1.6
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Thu Oct 29 07:45:59 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                9782 
   vendor                                     ENC
  xserver.version: 2:1.15.1-0ubuntu2.7

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