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It seems like when I have certain web pages focused, my screensaver will kick in, but the screen won't turn itself off. Does anyone have any ideas why this might be? Is there a way to disable whatever is keeping DPMS from kicking in?

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    The whatever is probably a movie playing plugin. As far as I know, it's a global X server setting that any client can change (xset dpms …) on the command line.
    – Gilles 'SO- stop being evil'
    Commented Sep 4, 2010 at 18:22
  • @Gilles maybe... though I usually leave my browser on Google Reader.
    – xenoterracide
    Commented Sep 4, 2010 at 19:21
  • I know mplayer will do that, and it seems to be permanent; once I've played a video in mplayer my DPMS is disabled until I reenable it or restart. Gilles is probably right, but you'd have to experiment
    – Michael Mrozek
    Commented Sep 4, 2010 at 20:26
  • @Michael For me mplayer only keeps the screen disabled while playing... my screen will still shut off if it's not playing... well when I'm not using it I always leave smplayer minimized to systray
    – xenoterracide
    Commented Sep 4, 2010 at 20:31
  • @xeno Interesting; must just be something I messed up with my configuration
    – Michael Mrozek
    Commented Sep 4, 2010 at 20:52

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Do you have SELinux enabled? My machine uses the ATI binary blob and it always gets denied to so the monitor is simply black.

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