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Unable to use external monitor through edock + displayport

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jcaporossi
Posts: 6
Joined: 2015-04-28 19:09

Unable to use external monitor through edock + displayport

#1 Post by jcaporossi »

I'm using Jessie 8.3 on Dell laptop Latitude E7240.
Now when I plug the laptop in the Dell eDock docking station, external monitor connected through DisplayPort and it is detected (according to xrandr output).

BUT nothing shows on the monitor (it stays black) and I get errors repeating in the kernel log:

[ 71.064428] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting.

Thanks for your support,

Regards,
Jerome
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