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[sjjh <1462590@xxxxxxxxxxxxxxxxxx>]

This is the error message I get trying to run graphical applications from command line as mentioned above in the bug description:
------------------------------------------------------------------------------
simon@laptop:~$ eog 
Maximum number of clients reached
** (eog:7631): WARNING **: Could not open X display
Maximum number of clients reachedgdk_mir_display_open
Failed to connect to Mir: Failed to connect to server socket: Datei oder Verzeichnis nicht gefunden
Unable to init server: Verbindung ist gescheitert: Verbindungsaufbau abgelehnt

(eog:7631): Gtk-WARNING **: cannot open display: :0
simon@laptop:~$ 
------------------------------------------------------------------------------
The two German texts are in English:
Datei oder Verzeichnis nicht gefunden --> File or folder not found
Verbindung ist gescheitert: Verbindungsaufbau abgelehnt --> Connection has failed: Connection establishment refused

This also leads to the problem that I cannot start any new applications
at all. I first have to log off and on again.

The problem happens repeatedly some time after logging in. I don't get
any visual error message.

It actually seems that it is not necessary to turn the screen to provoke
this problem. So this may be another problem than the one original
stated in this bug report. Please tell me if I shall open another bug
report for it and how to debug this problem. A first glance at dmesg
didn't show anything useful.

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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:
  New

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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