Why do you get a black screen only after you wake it up with the mouse?

A black screen after waking a computer with the mouse could be due to several reasons, including a display driver issue, power settings, or a connection problem. The display driver may not be properly resuming from sleep, leading to a failure to reinitialize the screen. Additionally, power settings may be configured to turn off the display after a period of inactivity. Checking and updating display drivers or adjusting power settings can often resolve this issue.