[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 #20 from Daniel Martin <consume.noise at gmail.com> ---
I've retested with v3.13-0-rc1 as can be seen in attachment 89905 (without
docking station) and attachment 89906 (with docking station). Additionally,
I've added some debug messages "XXX: ..." around the locks of
dev->mode_config.mutex.

And I've noticed that there're no calls to intel_dp_set_signal_levels() in the
docking station case. Whereas they're in the wo/ docking station case right
after haswell_write_eld(). Is that correct?

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