[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 #137 from bfrancom at gmail.com ---
(In reply to comment #124)
> (In reply to comment #122)
> > 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...)
> 
> Same here. Switching to one external DP display now works like a charm. Gets
> identified as DP2 in xrandr.
> 
> Connecting a second DP display result in a mirrored output. Both external
> displays are identified as DP2.
> 
> There seems to be still a problem enumerating the devices connected to the
> DP hub

Same on a Thinkpad W540 with Ultra Dock. Ubuntu 13.10 3.14.0-031400rc1-generic

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