Any update on this? I am seeing a similar issue. I have an external monitor, which works fine until the computer goes to sleep. When I login after the display goes to sleep, I only get my laptop display. I have to unplug or go to the Display setting page to trigger the external monitor to come on.
If I move my mouse to the edge, my mouse moves off the laptop screen as it if is on the external display.
lsackette
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