Bug#817195: Same observation
On Tue, Mar 15, 2016 at 15:34:18 +0100, Michael Hanke wrote:
> Hi,
>
> I seem to observe the exact same behavior on a machine with a different
> chipset
>
> 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
>
> and using a Display Port connection. Gnome shell in use also. It doesn't
> depend on the particular DP device connected, and the behavior was
> introduced by (or co-occurred with) a recent package upgrade.
>
> If this package is responsible, the most recent upgrade in my system
> happened on 2016-03-11, upgrading from 2.99.917-2 to
> 2.99.917+git20160218-1.
>
Your best bet is probably to actually check if reverting to an older
version of the intel driver fixes the issue, and if it does, to file
this upstream per
https://01.org/linuxgraphics/documentation/development/how-report-bugs
Or, you can uninstall xserver-xorg-video-intel and try the generic
modesetting driver.
Cheers,
Julien
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