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I have a Fedora 17 desktop system running the latest 64-bit kernel which will not go to sleep properly. I know this because the fan continues to run after the screen has blanked - further the system will not restart when I repeatedly whack the keyboard with my fists. Smashing it against the sideboard also has no effect.

If I shut the machine down it will wake successfully on a light keypress.

I would appreciate any suggestions as to how to come to a diagnosis for this as there seem to be many users experiencing this issue but for a wide range of reasons.

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What type of computer do you have it running on? – SaintWacko Sep 25 '12 at 13:18
    
AMD Phenom II X4 945 Processor x 4 4Gb RAM - Do you want the motherboard details too ? IIRC its an NVidia Chipset - I have an ATI Graphics Adapter – Hugh Jones Sep 25 '12 at 13:34
    
Well, I meant the brand, actually. I had an HP computer, and because they use some proprietary drivers which Fedora was unable to acquire, it had a similar issue. It would go to sleep, but wouldn't wake up. Fortunately, it booted/shut down so fast it wasn't really an issue. – SaintWacko Sep 25 '12 at 14:31
    
I see - its a home build – Hugh Jones Sep 25 '12 at 15:26
    
Ah, well it's probably not the same issue, then. That's actually a good thing, it means you may have a chance at fixing it! – SaintWacko Sep 25 '12 at 15:34

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