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[Launchpad Bug Tracker <1293425@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 907381 ***
    https://bugs.launchpad.net/bugs/907381

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: xorg (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1293425

Title:
  1002:6741 [Dell Vostro 3550] Display resolution keeps switching with
  external monitor connected

Status in xorg package in Ubuntu:
  Confirmed

Bug description:
  If I use external monitor and extend my desktop to both the built-in
  laptop display and the external LCD, the display settings are auto-
  changed by the system. This may include resetting to a "mirrored"
  display at 1024x768, a single display on the laptop panel, or a single
  display on the external monitor.

  If I use just the AMD GPU via the AMD CCC, my monitors keep switching
  between resolutions, mirroring switches on and off every minute or so.

  WORKAROUND: If I switch to just the Intel GPU via the AMD GPU, or
  never install AMD drivers and just use the Intel GPU out-of-the-box, I
  can go a day without spontaneous switching of resolutions and/or
  mirroring displays, sometimes it happens like 2 or 3 times per day.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: xorg 1:7.7+1ubuntu4
  ProcVersionSignature: Ubuntu 3.8.0-35.50-generic 3.8.13.13
  Uname: Linux 3.8.0-35-generic x86_64
  .tmp.unity.support.test.0:

  ApportVersion: 2.9.2-0ubuntu8.5
  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
  Date: Mon Mar 17 09:36:31 2014
  DistUpgraded: Fresh install
  DistroCodename: raring
  DistroVariant: ubuntu
  ExtraDebuggingInterest: I just need to know a workaround
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:04cd]
   Advanced Micro Devices [AMD] nee ATI Whistler [Radeon HD 6600M/6700M/7600M Series] [1002:6741] (rev ff) (prog-if ff)
  InstallationDate: Installed on 2014-03-17 (0 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: Dell Inc. Vostro 3550
  MarkForUpload: True
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-35-generic root=UUID=d9ac2de5-de02-45d6-af39-3588757a6e61 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/03/2012
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A11
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A11
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrA11:bd08/03/2012:svnDellInc.:pnVostro3550:pvrNotSpecified:rvnDellInc.:rn:rvrA11:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Vostro 3550
  dmi.product.version: Not Specified
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.9~daily13.06.19~13.04-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.46-1ubuntu0.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.7-1ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.7-1ubuntu2
  version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6.2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4.3
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1

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