[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 #122 from Stefan Agner <stefan at agner.ch> ---
Just installed this new Firmware (which claims to be Version 2.17). It
certainly improves situation, I get output on my HDMI monitor with an unpatched
kernel:

However, I still get
[drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting

I also get a mirrored output on VGA, however I could not extend to that
adapter. (it seems to be a hardware mirror, I only see one external display,
DP2, in XrandR...)

See also dmesg-debug-3.12.7-with-dock-firmware-2.17.txt

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