[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 #159 from Thomas Fogh Damgaard <thomas.fogh.damgaard at gmail.com> ---
Using Fedora 20 with kernel 3.13.6-200.fc20.x86_64 I can now use my Lenovo
T440s and the ThinkPad Pro Dock and 1 external monitor. However if I connect a
second monitor it just gets a mirror of the first external monitor. I can
connect the first monitor to VGA or DVI and that works fine.

xrandr output with two monitor connected (same output with only one external
monitor):
$ xrandr
Screen 0: minimum 320 x 200, current 3600 x 1080, maximum 8192 x 8192
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis)
309mm x 173mm
   1920x1080      60.0*+
   1400x1050      60.0  
   1280x1024      60.0  
   1280x960       60.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP2 connected 1680x1050+1920+0 (normal left inverted right x axis y axis) 459mm
x 296mm
   1680x1050      60.0*+
   3360x1050      60.0  
   2560x1024      60.0  
   1280x1024      75.0     60.0  
   1440x900       75.0     59.9  
   1280x960       60.0  
   1280x800       74.9     59.8  
   1152x864       75.0  
   1024x768       75.1     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        75.0     72.8     66.7     60.0  
   720x400        70.1  
HDMI2 disconnected (normal left inverted right x axis y axis)

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