dpms keeps turning itself off periodically

original problem: on waking from screensaver/standby (not sure which), Xorg squishes dual monitors into a single screen, which I can't seem to undo without service xdm restart (I know of on way to extract an xrandr command from xorg.conf) * solution: xset +dpms prevents this 'bug', for some reason second problem: xset +dpms doesn't work in .xsession * solution: I set it with a sleep beforehand, so after initializing the xsession, xset q properly says "DPMS enabled" **actual problem (this question)**: periodically (seemingly randomly), DPMS unsets itself, and xset q after a screensaver/standby will result in DPMS disabled even though I haven't done xset -dpms anywhere what program is setting DPMS off, and/or is it a bug which will obligate me to run a script that sets xset +dpms every 4 minutes as long as the computer is on................................. how could I maybe debug this besides writing a script to let me know when DPMS switches to Disabled, such as finding the specific process that fiddles with the xset config (would setting this in xorg.conf fix things?) thank you