I have a KVM switch using an HDMI monitor,kb& mouse between a desktop and laptop. Whenever I switch away from the laptop, it reverts to its internal display, as expected. The problem is it does not automatically do the reverse -- use the external HDMI monitor when switched back.

The same behavior is observed from unplugging, replugging the HDMI cable directly to the laptop (no KVM).

Laptop: Ubuntu 16.10 with an nVidia 1060 card.



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