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I set the monitor to switch off after 14 minutes. But what happens is that it cycles between being off a second and backlight comes on another. I am sure that this is a Linux issue for the monitor does switches off after a set time in Windows 7.

I run Debian Jessie, 3.10-3-amd64, KDE 4.10.5. I use DVI for connection. Graphic card: Nvidia GeForce 7600gs, Monitor: Lenovo Thinkvision L220x. I don't use any screensaver.

Also, despite I use DVI, KDE system settings think that I use VGA (maybe this is normal):

enter image description here

This is how my power settings are: enter image description here

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  • Are you using a wireless mouse by any chance? It sounds like something is running and waking the screen up.
    – terdon
    Sep 22, 2013 at 17:26
  • @terdon yes. a logitech performance mouse mx. strange that i dont have the issue in win7. maybe because of proprietary drivers for the mouse?
    – sterz
    Sep 22, 2013 at 21:11
  • First make sure it's the mouse. Disconnect it and let the screen switch off. Does it still switch back on?
    – terdon
    Sep 23, 2013 at 8:56
  • @terdon did that, does not affect. the monitor still cycles.
    – sterz
    Sep 23, 2013 at 20:48

1 Answer 1

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Apparently the culprit was my graphics card (asus geforce 7600gs) all along. I bought a geforce 210 and the problem is solved!

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    cool, nice to see that my suggestion worked. thanks for coming back and letting us know the result.
    – cas
    Oct 4, 2013 at 8:55

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