But I caught some kernel messages every time I replug the screen:
[ 42.038474] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting
[ 57.587925] [drm:intel_dp_aux_native_read] *ERROR* too many retries, giving up
[ 57.600327] [drm:intel_dp_aux_native_read] *ERROR* too many retries, giving up
[ 57.612303] [drm:intel_dp_aux_native_read] *ERROR* too many retries, giving up
[ 66.380412] [drm:intel_dp_aux_native_read] *ERROR* too many retries, giving up
[ 66.391831] [drm:intel_dp_aux_native_read] *ERROR* too many retries, giving up
[ 66.403830] [drm:intel_dp_aux_native_read] *ERROR* too many retries, giving up
I tested with 3.14, and same problem.
But I caught some kernel messages every time I replug the screen:
[ 42.038474] [drm:intel_ dp_complete_ link_train] *ERROR* failed to train DP, aborting dp_aux_ native_ read] *ERROR* too many retries, giving up dp_aux_ native_ read] *ERROR* too many retries, giving up dp_aux_ native_ read] *ERROR* too many retries, giving up dp_aux_ native_ read] *ERROR* too many retries, giving up dp_aux_ native_ read] *ERROR* too many retries, giving up dp_aux_ native_ read] *ERROR* too many retries, giving up
[ 57.587925] [drm:intel_
[ 57.600327] [drm:intel_
[ 57.612303] [drm:intel_
[ 66.380412] [drm:intel_
[ 66.391831] [drm:intel_
[ 66.403830] [drm:intel_
I am not sure if it relevant, but it seems so.