When I'm not using compiz (metacity + gnome compositing) on two laptops I have a problem with the screen going blank after 10 minutes regardless of what I set as screensaver and power settings. With no screensaver set and no power settings enabled the screen still goes blank after 10 minutes. Very annoying when watching movies.
I have spent a lot of time trying to research this, but I can not find a solution. I have the same problem on two machines running fully updated LMDE, one with nvidia graphics, the other with Intel. Screen is blank after 10 minutes. I have removed DKMS from xorg.conf. No changes. I have tried to disable dkms from the command line after login (xset -dpms) but still the same 10 same result, screen blank after 10 minutes. Other xset commands works as expected, and verything else works fine: I can turn the screens on and off, I can dim them and the power settings for when on battery works fine.
It seems to me there's something in Gnome/Metacity causing this since it's not a problem under Compiz, but I can't for the life of me find out where the 10 minute timeout comes from.
[SOLVED]: Someone said it might be a bios setting, but I couldn't find such a setting. I then went and got a bios update and it now has an option to disable "LCD Power Saving". With that disabled the screen stays on. One question remains: How does compiz disable this bios setting?
Anyone else seen this, and where should I now look for a solution? I have worn our Google!