On Wed, Nov 07, 2007 at 11:12:32PM -0500, fred smith alleged:
Hi!
I've got a Centos 4.5 box at work.
I recently got a new LCD monitor and since that time have been having screen saver problems (they might have been occurring with the older CRT too but if so I didn't notice.)
I've set it up to use "blank screen" only, to go to black screen in 20 minutes. Then I set up powersave to progress through the three modes at short intervals so that after an hour the display should be powered off.
If I sit there and watch it (say, e.g. I'm busy doing paperwork and don't use the computer for a while :) it'll do exactly that, i.e., the display goes OFF.
So, I leave at the end of the day. When I come in the next morning the screen is NOT powered off, the power light is on (not yellow, not off) and every little while an OSD window pops up saying it's getting no video signal.
So, somewhere between going off in the short-term and being idle for 12-14 hours overnight, something goes awry and the display appears to get turned back on.
Anyone got any idea how I can figure this one out?
I have very similar settings at home (now on Centos 5, but also previously on Centos 4.5) and have not observed that behavior. Different computer, different video card, different monitor, though I don't see what difference it should make....
Sounds like your box is doing the right thing and shutting off the video, but the monitor itself poewers on to complain about it. Maybe there is a setting in the monitor to not visibly whine.