I can reproduce this consistently with one VGA and one HDMI monitor.
1) bring mouse pointer to VGA monitor 2) wait 4-5 seconds 3) bring mouse pointer to HDMI monitor, type ESC once or twice in a terminal
I tried fiddling with power management (`xset s off -dpms`) with no change in behaviour.
I can reproduce this consistently with one VGA and one HDMI monitor.
1) bring mouse pointer to VGA monitor
2) wait 4-5 seconds
3) bring mouse pointer to HDMI monitor, type ESC once or twice in a terminal
I tried fiddling with power management (`xset s off -dpms`) with no change in behaviour.