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I have installed the 12.10 beta (with all updates) on my iMac Early 2008. One annoying problem I'm having is that, when I log out of my account and go back to the login screen (lightdm, per default), the screen stays on: it never goes blank. This is not good for my display I guess!

The screensaver (set to just a blank screen) works just fine when I'm logged in. The problem only appears at the login screen.

Any ideas?

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Unless you are using an old CRT screen, no harm will be done to your display. LCD displays do not need screensavers.

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Thanks... I would still feel more comfortable if my screen went blank though. Also, I assume it saves some power, no? – Marciano Siniscalchi Oct 19 '12 at 15:21

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