I pulled this post out of the COM1, COM2 thread in the hopes of getting more exposure for it.
I'm having a problem with the iO power management in DOS. By playing with the BIOS PM settings, I've have it to the point that after the PM BIOS timeout (either 10 sec or 1 hour) it blanks and turns off the backlight. Unfortunately, after another period of time equal to the PM timeout, the screen restores as though an interrupt has caused a wake-up. I have all PM Events (Power Management in BIOS) turned off or disabled (I think). This implys that the source of the restoration could be PM timeout related.
Any ideas? As always, thanks for your time.