← Back to team overview

desktop-packages team mailing list archive

[Bug 1293425] Re: [Dell Vostro 3550] Display resolution keeps switching with external monitor connected


*** This bug is a duplicate of bug 907381 ***

Goran Obal, while the hardware under the hood is different between yours and LP#907381, for now let us mark this a duplicate given the scope of the hardware at issue (graphics card), and problem under review is the same as verified via a terminal:
cd ~/Desktop && wget -c https://launchpadlibrarian.net/161911014/Lspci.txt -O 1.txt && wget -c https://launchpadlibrarian.net/169792751/Lspci.txt -O 2.txt && grep -i ']:' 1.txt > 1-2.txt && grep -i ']:' 2.txt > 2-2.txt && diff 1-2.txt 2-2.txt ; rm 1-2.txt && rm 2-2.txt && rm 1.txt && rm 2.txt

Thank you for filing this bug report, as it it most helpful to have your
hardware on file, in order to ensure your issue is resolved as well as

Thank you for your understanding.

** Summary changed:

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

** This bug has been marked a duplicate of bug 907381
   1002:6741 [Dell Vostro 3550] Display resolution keeps switching with external monitor connected

You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg in Ubuntu.

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

Status in “xorg” package in Ubuntu:

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
  Uname: Linux 3.8.0-35-generic x86_64

  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
   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

To manage notifications about this bug go to: