If you have an Intel VGA with DisplayPort 1.2 and either
* 2 DisplayPort 1.2 MST-enabled displays in a daisy-chain configuration, or
* a DisplayPort 1.2 MST-enabled hub connected to 2 regular DisplayPort
monitors.
there's a sticky bug the kernel team would like to see more testing on.
Check out
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1104230
and do give the ppa from Dariusz with the proposed fix a whirl. If you
test and get positive or negative results, please simply leave feedback
in the bug itself so Dariusz and the kernel folks see it. Thanks
everyone and happy testing!
Nicholas
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