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[Bug 1454160] Re: External monitor is disabled after resume

 

crs, could you please test the latest upstream kernel available from the
very top line at the top of the page (the release names are irrelevant
for testing, and please do not test the daily folder) following
https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional
upstream developers to examine the issue.

If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-X.Y-rcZ

Where XY and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-X.Y-rcZ

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results.

Thank you for your understanding.

** Tags added: needs-bisect

** Package changed: xorg (Ubuntu) => linux (Ubuntu)

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https://bugs.launchpad.net/bugs/1454160

Title:
  External monitor is disabled after resume

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I have an external screen connected to my machine (T450s, via docking
  station) and after resuming from suspend, my external monitor is
  disabled.

  After some trial and error I made an interesting observation: The
  external monitor only stops working if suspend via systemctl suspend,
  sudo pm-suspend, or via the hotkey on my keyboard (K750).

  However, this problem does not occur if I suspend via the menu entry
  in the upper right corner.

  How is this even possible?

  Mapping the suspend command from the upper right corner to a hotkey
  would be a sufficient workaround. But which command is used by that
  button?

  
  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  .tmp.unity.support.test.0:

  ApportVersion: 2.17.2-0ubuntu1
  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
  CurrentDesktop: Unity
  Date: Tue May 12 11:10:31 2015
  DistUpgraded: Fresh install
  DistroCodename: vivid
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:5036]
  InstallationDate: Installed on 2015-05-03 (9 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: LENOVO 20BWS03F00
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-15-generic root=/dev/mapper/vgubuntu-root ro quiet splash
  SourcePackage: xorg
  Symptom: display
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/10/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: JBET47WW (1.12 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20BWS03F00
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: dmi:bvnLENOVO:bvrJBET47WW(1.12):bd03/10/2015:svnLENOVO:pn20BWS03F00:pvrThinkPadT450s:rvnLENOVO:rn20BWS03F00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20BWS03F00
  dmi.product.version: ThinkPad T450s
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Tue May 12 11:08:05 2015
  xserver.configfile: default
  xserver.errors:

  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:

  xserver.version: 2:1.17.1-0ubuntu3

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