*** This bug is a duplicate of bug 1237904 ***
https://bugs.launchpad.net/bugs/1237904
Thank you for taking the time to report this crash and helping to make
this software better. This particular crash has already been reported
and is a duplicate of bug #1237904, so is being marked as such.
I think this is related to the bug.
Sometimes when a new windows is opened both my monitors turn off for a second.
Most of the time this can be achieved by launching some KDE app. After that I
can see those messages in Xorg.log:
[ 179.094] (II) intel(0): switch to mode 1920x1080@60.1 on eDP1 us