unity - External monitor breaks display configuration randomly - Ask Ubuntu


if disconnect laptop, use while, go hook external monitor via hdmi, display freaks out. external monitor doesn't show @ all, windows on laptop monitor flicker , go on place.

however, of time, if disconnect hdmi cable, wait couple minutes, , plug in, works fine. other times, need end session before plugging in monitor again. makes laptop less practical.

any ideas on causing or how debug? i'm new unity, i've been using kde while.

running ubuntu 16.04.1, intel® hd graphics 520 (i5-6200u), external monitor hp 25es connected via hdmi.


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