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[Bug 1462590] Re: unity-settings-daemon crashes using xrandr

 

I didn't have all dbg-Symbols installed, following https://wiki.ubuntu.com/Backtrace I gave it another try. Please see the attached full backtrace by dbg.
Still I didn't understand how to pass the "--sync" option or to run it in the GDK_SYNCHRONIZE environment. If anybody can tell me how to do it I'm willing to try. If anybody knows how to further debug it, please tell me -- I'm happy to help to get this solved.

** Attachment added: "full backtrace by dbg"
   https://bugs.launchpad.net/ubuntu/+source/unity-settings-daemon/+bug/1462590/+attachment/4540580/+files/gdb-unity-settings-daemon.txt

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https://bugs.launchpad.net/bugs/1462590

Title:
  unity-settings-daemon crashes using xrandr

Status in unity-settings-daemon package in Ubuntu:
  Confirmed

Bug description:
  turning the screen by running the command 'xrand -o right' turns the
  screen, but it then immediately comes back to normal. Then I get a
  crash message of unity-settings-daemon. This problem also leads to
  non-working key combinations, as CTRL + ALT + T to open a terminal or
  Fn + F1, Fn + F2, Fn + F3, Fn + F4 to control volume/mic or Fn +F5, Fn
  + F6 to control display brightness. In addition I then have problems
  running graphical applications from command line, not finding the
  display and/or returning Mir(!?) errors.

  Unfortunately I failed to create a bug report by submitting the crash
  report, so I'll attach it to this report and hope you can find all the
  necessary information. Feel free to ask for more information or mark
  it as duplicate pointing to an existing bug report.

  Software: Pretty vanilla Ubuntu 15.04
  Hardware: Thinkpad Yoga 12
  I first recognised the bug when using following script: https://github.com/admiralakber/thinkpad-yoga-scripts/issues/8

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References