Public bug reported:
I'm running Ubuntu 13.10 on a MacBookAir5,2. The machine has an Intel
HD Graphics 4000 processor.
Every few minutes, a bunch of garbage blank lines flickers onto the
screen for a fraction of a second and then vanishes. I also saw this
running 13.04 on the same machine, but never before that. It's
impossible for me to capture a screenshot since it's completely
unpredictable when this will happen. But it's pretty distracting.
** Affects: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1177358
Title:
black line garbage flickers onto screen every few minutes
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