I'm not inclined to believe it is a problem with your monitor, however,
sometimes X picks some really boarder-line specs...and I've seen at
least CRTs flake out when run at the "edge" for too long.
Run xvidtune, see what the vertical refresh rate is. If you took great
pride in running it up to some high number, slap yourself on the wrist,
and back it down to 60Hz or 70Hz, see if it settles it down. On an LCD
monitor, it doesn't matter.
It may be more likely, however, that your machine's BIOS is turning the
display off, and it is not recognizing the keyboard or mouse activity to
keep it on or turn it back on. Going into your BIOS configuration and
disabling anything related to power saving may be productive.
I tried change setting in BIOS, but problem still in there. and test
with a CRT monitor get same problem. it's really wired.
