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Osiris

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Registered: 2003-01-18

Posts: 160

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Thinkpad Docking Station and two connected monitors

Hello,

I have a recent Thinkpad T440s with a docking station. I just got a second monitor which I connect using DisplayPort. The other on is connected using DVI, both directly to the docking station. I've managed to get either one of them working, never both.

I've read of an issue with the MST switch in the docking station, but it should be fixed as of kernel 3.17 (I'm running 3.17.2) according to https://bugs.freedesktop.org/show_bug.cgi?id=72795 Graphics drivers are xf86-video-intel.

Any ideas someone?
Thx!

xrandr output is like that. Even when both displays are connected.

% xrandr
Screen 0: minimum 8 x 8, current 3840 x 1200, maximum 32767 x 32767
eDP1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 175mm
   1920x1080     60.01*+
   1400x1050     59.98  
   1280x1024     60.02  
   1280x960      60.00  
   1024x768      60.00  
   800x600       60.32    56.25  
   640x480       59.94  
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)
DP4 connected primary 1920x1200+1920+0 (normal left inverted right x axis y axis) 519mm x 324mm
   1920x1200     59.95*+
   1600x1200     60.00  
   1680x1050     59.88  
   1280x1024     60.02  
   1280x960      60.00  
   1280x720      59.97  
   1024x768      60.00  
   800x600       60.32  
   640x480       60.00  
   720x400       70.08  
DP5 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

Last edited by Osiris (2014-11-11 10:20:38)