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Screen Saver on 10.8.2 Fails to Activate

I upgraded four Macs to 10.8.2 (iMac, 2 MacBook Pros and Mac mini) and the Mac mini is the only one where the screen saver stopped working. Too bad, because this one is our media center, hooked up to a projector and a small 12" display. The 12" display stays on, displaying the photo montage screen saver (Vintage Photos), and works really nicely as a photo frame.


I've tried a bunch of things, including repairing permissions, restarting, changing screen savers, and it started working once, but then it stops working again.


Seems like theres a bug in the timer that tracks mouse inactivity or something, as the screen saver fails to activate.


Any thoughts?

Posted on Sep 22, 2012 5:12 AM

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165 replies

Mar 24, 2013 8:19 PM in response to Mark Jenkinson

I have an early 2009 Mac Mini that I recently upgraded from Snow Leopard (10.6.8) to Mountain Lion 10.8.3. I have the same problem as others in this thread since that update -- the screensaver will freeze after a few minutes. I've never actually caught it 'in the act', but I know it can happen in as little as 20 minutes.


I tried changing screensavers and then found this thread. After trying everything here, I'm still finding my Mac...well, stuck! I was using the 'Message' screensaver and decided to check the 'Show with clock' option. I left my Mac for about 20 minutes and came back. Sure enough, the clock said 11:02pm. I logged in, and it was actually 11:05pm. Well, this confirmed the freezing I suppose.


I use this Mac as a media server and I've never had any trouble out of it. I have a Firewire 800 drive connected externally for extra storage and 4GB RAM. Everything else is original. One small oddity is that I noticed that when I click 'About this Mac' followed by 'More info...' then finally 'Displays', it tells me 'No displays detected'. My monitor is an Acer X233H connected via DVI. It seems to recognize the monitor in System Preferences - Displays when I click on the Color tab. I have no idea if that's related, but thought I should mention it.


Well, I'll be watching this thread. At least I'm not the only one. Thanks to everyone for sharing.

Screen Saver on 10.8.2 Fails to Activate

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