I have a triple display ubsc plugable. two monitors are connected via the HDMI ports. On occation, typically when I am away for a while, the 4k port will stop displaying. cannot recover without power cycling the plugable unit. two monitor are identical and resolution is at 1920x1080. unplugging from laptop does not resolve. Unpluggin hdmi cable does not help.
How do i resolve the loss of one monitor?