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[Amos Brocco <amos.brocco@xxxxxxxxx>]

I found out that if this problem only happens if, prior to setting
screens in mirrored mode,  the panel is moved on the external screen,
i.e

1. Connect external screen
2. In the display configuration tool enable screen and move unity panel to external screen
3. Select mirrored screen
4. Bug: application panel does not appear when icon is clicked

but

1. Connect external screen
2. In the display configuration tool ensure that the panel is on the laptop screen
3. Select mirrored screen
4. Ok, application panel appears

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https://bugs.launchpad.net/bugs/1281053

Title:
  Unity application panel does not appear with mirrored screens on Intel
  graphics

Status in “unity” package in Ubuntu:
  New

Bug description:
  
  My setup
  ========

  I'm using Ubuntu 13.10 on a HP TM2 with hybrid graphics (vga-
  switcheroo):

  - integrated card: 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller]) 
  - discrete card: 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Park [Mobility Radeon HD 5430/5450/5470] (prog-if 00 [VGA controller])

  Problem
  =======

  I need to work using a mirrored screen setup, with an external screen
  connected to VGA (resolution: 1024x768).

  When using the integrated intel card the application/search panel does
  not appear when I click on the launcher icon or press the keyboard
  shortcut: there is just a slight shadow on the top left corner (see
  attached screenshot). However, if I switch to the discrete card
  (AMD/ATI) I have no problems at all (panel shows up in mirrored mode).

  In non-mirrored mode the panel shows up using both cards and works
  correctly on both screens.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: unity 7.1.2+13.10.20131014.1-0ubuntu1
  ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10
  Uname: Linux 3.11.0-15-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.12.5-0ubuntu2.2
  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
  Date: Mon Feb 17 11:22:54 2014
  DistUpgraded: Fresh install
  DistroCodename: saucy
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  GraphicsCard:
   Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
     Subsystem: Hewlett-Packard Company Device [103c:1486]
   Advanced Micro Devices, Inc. [AMD/ATI] Park [Mobility Radeon HD 5430/5450/5470] [1002:68e0] (prog-if 00 [VGA controller])
     Subsystem: Hewlett-Packard Company TouchSmart tm2-2050er discrete GPU (Mobility Radeon HD 5450) [103c:1486]
  InstallationDate: Installed on 2014-02-12 (4 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Hewlett-Packard HP TouchSmart tm2 Notebook PC
  MarkForUpload: True
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=6dc4e5fd-db39-4985-8a85-8db30961e8c5 ro quiet splash vt.handoff=7
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/18/2011
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.25
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 1486
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 83.20
  dmi.chassis.asset.tag: CNU03739VM
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsyde:bvrF.25:bd02/18/2011:svnHewlett-Packard:pnHPTouchSmarttm2NotebookPC:pvr058A210000242A10000120100:rvnHewlett-Packard:rn1486:rvr83.20:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP TouchSmart tm2 Notebook PC
  dmi.product.version: 058A210000242A10000120100
  dmi.sys.vendor: Hewlett-Packard
  version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.46-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.2.1-1ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.2.1-1ubuntu3
  version.xserver-xorg-core: xserver-xorg-core 2:1.14.5-1ubuntu2~saucy1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
  xserver.bootTime: Mon Feb 17 11:20:41 2014
  xserver.configfile: /etc/X11/xorg.conf
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.14.5-1ubuntu2~saucy1
  xserver.video_driver: radeon

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