At 8:19 PM -0600 3/3/2012, Fred Thiel and Janet Thiel wrote:
My mid 2011 Intel 3.1 Ghz. Snow Leopard OSX 10.6.8 iMac will not sleep anymore unless I make it sleep by manually pressing the power button. I recently tried to install Linux Mint 12 without success, and in doing so I believe that is the cause of the problem. I tried to install on a free partition I previously made for such purposes, but was not able to do so. Since then, I have tried numerous things including a complete re-format of the original drive with Drive Genius and then ran AppleJack after restoring from my backup. The only option I can think of right now is to re-install the system software. I'd rather not do that if I can help it. Any suggestions will be greatly appreciated.
What external peripherals do you have connected? If you disconnect them, does the system sleep?
Launch Console.app and set it to view your system log. Let the machine sit there, beyond the time when it should sleep. Check the messages that are thrown into the log. Typically, there will be something there indicating what woke it, or refused the sleep order.
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