I have already disabled screen saver, "Lock Screen", and power management.
prefer blanking: yes allow exposures: yes
timeout: 0 cycle: 0
DPMS (Energy Star):
Standby: 7200 Suspend: 7200 Off: 14400
DPMS is Disabled
But ocassionally, the screen is still blank. It happens randomly.
I can use mouse or keyboard to turn on the screen.
However, sometimes it might just shows a cursor on the left upper corner; it can't get back to the desktop.
Any clues to completely stop the blink screen. Any other settings I forgot?