[Bug 71267] sna: (Haswell) X-server freezes when enabling DP at docking station

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71267

--- Comment #59 from nkalkhof at web.de ---
The patch doesn't work with a t440 on its docking station. Still 20-50 seconds
between eDP<->DP switches in which the cpu seems to burn (fan goes up).
Sometimes the external screen comes on shortly but then get black again leaving
the system non responsive. One good thing the patch does is to lower the power
consumption when the system is idle (no matter if attach to dock od running
stand alone) from 18 watts to 10 watts. So I guess there is much more going on
here that needs to be fixed.

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