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[sjjh <1462590@xxxxxxxxxxxxxxxxxx>]

Trying to generate a backtrace with gdb (--sync seemed to not work):

(unity-settings-daemon:28533): Gdk-ERROR **: The program 'unity-settings-daemon' received an X Window System error.
This probably reflects a bug in the program.
The error was 'XI_BadDevice (invalid Device parameter)'.
  (Details: serial 600 error_code 129 request_code 131 (XInputExtension) minor_code 48)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the GDK_SYNCHRONIZE environment
   variable to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

Program received signal SIGTRAP, Trace/breakpoint trap.
0x00007ffff642789b in g_logv () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
(gdb) bt
#0  0x00007ffff642789b in g_logv () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ffff6427a0f in g_log () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff5865828 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#3  0x00007ffff5870879 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#4  0x00007ffff4ac8c4d in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#5  0x00007ffff4ac5ad7 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#6  0x00007ffff4ac6c58 in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007ffff4882f32 in XIQueryDevice () from /usr/lib/x86_64-linux-gnu/libXi.so.6
#8  0x00007fffd778066e in xdevice_get_dimensions () from /usr/lib/unity-settings-daemon-1.0/libxrandr.so
#9  0x00007fffd777b132 in ?? () from /usr/lib/unity-settings-daemon-1.0/libxrandr.so
#10 0x00007fffd777e140 in ?? () from /usr/lib/unity-settings-daemon-1.0/libxrandr.so
#11 0x00007ffff66f6015 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007ffff6708061 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007ffff6710dfc in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007ffff671112f in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x00007ffff79c22d4 in ?? () from /usr/lib/libunity-settings-daemon.so.1
#16 0x00007ffff79c233d in ?? () from /usr/lib/libunity-settings-daemon.so.1
#17 0x00007ffff586b291 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#18 0x00007ffff586b56d in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#19 0x00007ffff583e629 in gdk_display_get_event () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#20 0x00007ffff586b312 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#21 0x00007ffff6420ff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007ffff6421250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007ffff6421572 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007ffff6ec1775 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#25 0x00000000004037f1 in main ()

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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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