My Mac Mini goes to sleep when I turn off my TV.

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Level 1

1 points

My Mac Mini goes to sleep when I turn off my TV.

Hello and thanks in advance for all help. I have a Intel mac mini that I currently have hooked up via DVI/DVI cable to my Sony LCD television. I recently upgraded the OS to 10.5 from 10.4. The issue that I am having after the OS upgrade has to do with the Mac going to sleep after I turn the TV off. It also goes to sleep if I set up the display to sleep after a period of time even if I have the computer itself set to never sleep. Right now I have the computer set to never sleep and the display to never sleep but when we turn the TV off the computer goes to sleep anyway. The reason why I need the computer to stay awake is because we use a Magicjack at our home for our local phone service and it is plugged into one of the USB ports on the computer. If the computer goes to sleep we loose our home phone service. I am wondering what could be causing the computer to sleep when the display is turned off. When I upgraded to 10.5 I did a clean install and not a upgrade.

Any help would be greatly appreciated.

Thanks very much to all.

Mini, Mac OS X (10.5.7)

Posted on Jun 14, 2009 3:48 PM

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Answer 1

Jan 23, 2017 5:23 AM in response to hockeydad1

Hello, I have the same problem only I'm running the MacMini to a Sharp LCD TV via HDMI.

Very frustrating as all of my sleep settings are OFF/Never. Turning OFF the TV causes all network activity and any tasks to stop or become inactive as if the computer is sleeping. When I return to awaken it, it's very slow to respond.

I will report back my findings after the SMC reset as I follow the cable order you describe.

Thanks so much for posting this.

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Answer 2

Dah•veed

Level 9

64,645 points

Jun 14, 2009 4:06 PM in response to hockeydad1

The SMC (system management controller) is in charge of all those things on your Mac. The first thing to do is reset it and see if that clears the issue.
Intel-based Mac mini: How to reset the System Management Controller

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Answer 3

hockeydad1 Author

Level 1

1 points

Jun 15, 2009 7:27 AM in response to Dah•veed

Thanks so much for your help. This fixed things perfect. The only thing I may add for anyone else that has this issue is that it is important to reconnect the power cable to the computer first and then after a few seconds reconnect all of your other cables. The first time I tried it I reconnected the power cable last and it still didn't fix things. I gave it another try reconnecting the power cable first and now everything is perfect.

Thanks again for your help,

Rich

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