Created attachment 952473 [details] dmesg output Description of problem: Monitor not turn on after wake up from stand by mode, monitor connected via Disply Port cable. Version-Release number of selected component (if applicable): xorg-x11-drv-intel-2.21.15-7.fc20.x86_64 How reproducible: Steps to Reproduce: 1. Leave pc alone, after 5 minutes it will turn off monitor for power saving 2. Begin to type something 3. Monitor will stay stand by mode 4. Reset pc Actual results: Monitor not turn on Expected results: Monitor to turn on Additional info: This appears in journal: [drm:intel_dp_start_link_train] *ERROR* failed to enable link training [drm:intel_dp_complete_link_train] *ERROR* failed to start channel equalization
Same Probleme and workaround here additional Steps to reproduce: 1. lock screen 2. wait 2 secs (till secondary monitor is turned off) 3. login again expected: secondary monitor (the one over mini display) working actual results: leptop monitor on, secondary monitor in power saving mode The same monitor worked over HDMI, DVI without problems when waking up. workaround: unplugging the monitor and plugging back in again. not sweet but does the job. the Bug also occurs when starting the system: both monitors work as expected until I login, after entering the password the monitor attached to mini display turns off.
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