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[Bug 1500382] Re: Screen blanking out when using an external 4k monitor with the internal screen turned off in display settings.

 

Pedro Coca, thank you for reporting this and helping make Ubuntu better.
Could you please run the following command from a terminal as it will
automatically gather and attach updated debug information to this
report:

apport-collect -p xorg 1500382

Please ensure you have the package xdiagnose installed, and that you
click the Yes button for attaching additional debugging information.

When reporting bugs in the future please use apport by using 'ubuntu-
bug' and the name of the package affected. You can learn more about this
functionality at https://wiki.ubuntu.com/ReportingBugs .

** Changed in: xorg (Ubuntu)
   Importance: Undecided => Low

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

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https://bugs.launchpad.net/bugs/1500382

Title:
  Screen blanking out when using an external 4k monitor with the
  internal screen turned off in display settings.

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  [Summary]
  Screen blanking out when using an external 4k monitor with the internal screen turned off in display settings.

  [Reproduce Steps]
  1. Connect an external 4K monitor
  2. Turn off the internal screen in the display settings

  [Results]
  Expected: Normal output
  Actual: Blank Screen

  [Additional Information]
  Product Name: Ubuntu 14.04.3 LTS on Dell XPS 13 9343
  BIOS Version: BIOS A05 07/14/2015
  Kernel Version: 3.13.0-63-generic
  CPU: Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz
  GPU: Intel Corporation Broadwell-U Integrated Graphics (rev 09)
  Monitor: Dell monitor, model P2715Q

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