[Bug 30969] Re: monitor goes to standby when playing a movie in totem fullscreen

[Justin Dugger]

I have gnome-power-management to set the screen idle "never" and it
still goes off after 20 minutes.  My fix was to go into xorg.conf and
just comment out the DPMS line for the monitor.   So at least, there's a
workaround.  Probably not acceptable for laptops though.

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monitor goes to standby when playing a movie in totem fullscreen
https://launchpad.net/bugs/30969