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[Launchpad Bug Tracker <1232343@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: xorg-server (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1232343

Title:
  XMir Screen flickering when running steam or SDL games

Status in libsdl2 package in Ubuntu:
  Invalid
Status in xorg-server package in Ubuntu:
  New

Bug description:
  Up until last week most of my steam catalogue was running well under
  xmir, now a terrible screen flickering occurs when launching any steam
  or SDL game.  The screen flickers in intesity multiple times per
  second and does so dramatically as if going from full brightness to
  full dim.  I can find no errors in the logs.

  grep -i xmir /var/log/Xorg.0.log
  [ 22424.891] (II) "xmir" will be loaded by default.
  [ 22424.893] (II) LoadModule: "xmir"
  [ 22424.893] (II) Loading /usr/lib/xorg/modules/extensions/libxmir.so
  [ 22424.916] (II) Module xmir: vendor="X.Org Foundation"
  [ 22425.186] (II) [XMir] Handling focus event, new_focus = TRUE

  I am using a System 76 Lemur Ultra I7 with intel HD4000 graphics and
  an up to date 13.10 installation.

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