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[Bug 907381] Re: 1002:6741 [Dell Vostro 3550] Display resolution keeps switching with external monitor connected


I have found that Dell WMI hotkeys id=17 [slave keyboard (3)] doesn't
need disabling. Even more, if disabled, login fails when no external
monitor is connected.

I will try if disabling only id=8/id=7 is enogh for workaround and I'll
report back.

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

Status in “xorg-server” package in Ubuntu:

Bug description:
  On my Dell Vostro 3550, from 11.10 through 14.04 When connecting to an
  external monitor to extend my desktop the display settings are
  unstable. Sometimes the chosen settings do not "take". If they do
  apply, and I confirm that I want to keep the settings, at random
  intervals the display settings are auto-changed by the system. This
  may include resetting to "mirrored" displays at 1024x768, a single
  display on the laptop panel, a single display on the external monitor,
  or some other undesired combination.

  In Saucy, I attempted to use the proprietary drivers, but this did not work:
  * fglrx-installer from the repository (Login screen fine, but logging in produces a black page with only white cursor showing).
    * fglrx-installer-updates (Login screen fine, but logging in produces a black page with only white cursor showing).
    * Manually installing Catalyst 13.4 - unusable display corruption.

  WORKAROUND: xinput
  ⎡ Virtual core pointer id=2 [master pointer (3)]
  ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
  ⎜ ↳ Logitech USB Optical Mouse id=12 [slave pointer (2)]
  ⎜ ↳ DualPoint Stick id=15 [slave pointer (2)]
  ⎜ ↳ AlpsPS/2 ALPS DualPoint TouchPad id=16 [slave pointer (2)]
  ⎣ Virtual core keyboard id=3 [master keyboard (2)]
      ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
      ↳ Power Button id=6 [slave keyboard (3)]
      ↳ Power Button id=9 [slave keyboard (3)]
      ↳ Sleep Button id=10 [slave keyboard (3)]
      ↳ Laptop_Integrated_Webcam_FHD id=11 [slave keyboard (3)]
      ↳ Dell Dell USB Entry Keyboard id=13 [slave keyboard (3)]
      ↳ AT Translated Set 2 keyboard id=14 [slave keyboard (3)]
      ↳ Video Bus id=8 [slave keyboard (3)]
      ↳ Video Bus id=7 [slave keyboard (3)]
      ↳ Dell WMI hotkeys id=17 [slave keyboard (3)]

  xinput disable 7 && xinput disable 8 && xinput disable 17


  ApportVersion: 2.12.7-0ubuntu6
  Architecture: i386
  CasperVersion: 1.336ubuntu1
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroRelease: Ubuntu 14.04
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
   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, Inc. [AMD/ATI] Whistler [Radeon HD 6630M/6650M/6750M/7670M/7690M] [1002:6741] (prog-if 00 [VGA controller])
     Subsystem: Dell Radeon HD 6630M [1028:04cd]
  LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha i386 (20140108)
  MachineType: Dell Inc. Vostro 3550
  MarkForUpload: True
  Package: xorg-server (not installed)
   PATH=(custom, no user)
  ProcKernelCmdLine: file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  ProcVersionSignature: Ubuntu 3.12.0-7.15-generic 3.12.4
  Tags:  trusty ubuntu compiz-0.9
  Uname: Linux 3.12.0-7-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)

  dmi.bios.date: 07/18/2011
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.name: 0DJW0H
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A07
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrA07:bd07/18/2011:svnDellInc.:pnVostro3550:pvrNotSpecified:rvnDellInc.:rn0DJW0H:rvrA07:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Vostro 3550
  dmi.product.version: Not Specified
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1
  version.libdrm2: libdrm2 2.4.50-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.0.1-1ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.0.1-1ubuntu2
  version.xserver-xorg-core: xserver-xorg-core 2:1.14.5-1ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.907-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu1
  xserver.bootTime: Wed Jan  8 13:59:41 2014
  xserver.configfile: default
  xserver.errors: RADEON(G0): [XvMC] Failed to initialize extension.
  xserver.logfile: /var/log/Xorg.0.log
   product id                                 739
   vendor                                     LGD
  xserver.version: 2:1.14.5-1ubuntu2

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