Mac Mini auto restarts when shutting down with Mountain Lion

No news?

Im also having this problem, running ML on mac mini 2010.

I rang apple earlier today and he wasn't aware of the problem and asked me to go through various power cycles, with pressing certain buttons on the keyboard when you start the mac, however all were a failure.

He then resorted to resintall ML and said that should fix it but im afraid it hasnt.

Ive got 2 external hard drives, one USB and one Firewire which ive only just installed and the problem is there before i installed that.

there seems to be a recurring theme around USB connections but i think its a deeper more complex issue with the OS.

I have looked into the log as well and it says there was PANIC when the mac was restarting.......

Fingers crossed that apple pick up on this issue and sort it soon.

Rob

I reinstalled mine a couple of days ago and although I have only turned it on twice it has not restarted istself. keeping my fingers crossed. I now dont have any sound coming out of the headphone port though (and I use it as a media player) !!!!!!!! god knows why I havent changed anything.

plagued with problems these macminis

Good suggestions. Can I ask how does one reinstall ml? Or ml update?

I appreciate any help.

how did you install it to begin with? did your mac come with it pre-installed? did you buy it on App Store as an upgrade from lion or snow leaopard? it also depends wheather you have updated it to the latest version!

I bought it on app store and made a copy of the original installer for keeps sake so I just reran it ontop of the one I had but you can do a fresh install if you want, it just takes more work.

Any progress guys?? Having same stupid problem!!

Same problem for me. I have a mid-2011 mac mini with the amd radeon video card. Hopefully Apple looks into this and comes up with a patch soon.

Are you guys just not going to shut down for now? I never really shut down these days, just restart.

same problem here. latest mini server.. i disabled bluetooth and plugged in usb keyboard and mouse..shuts down fine now .. i think it was related to wireless keyboard or trackpad.. not sure which..been bugging me for ages..not sure if there is a firmware upgrade for them??..shame coz the mini needs wireless peripherals.anyways hope that helps u too..

Greetings,

Its not just mac mini, I have the same problem for my mac pro and macbook pro too.

Made a clean install of ML. Problem not solved...

When I shut down, I restart the computer, reboot in safe mode and then shut down to turn off the mac mini. That seems to be the only way for me until this problem is fixed...

I finally found the problem: it's tue to HDMI connection. I click on shutdown menu, during the one minute before the shutting down, I disconnected the HDMI cable from my mini. The mac shuts down normally. That's a big problem: I can't disconnect the monitor every time I want to shut down!!!!!!

Hi guys,

It's not the HDMI, it's something with the motherboard or device panel. If you unplug usb devises the proble stops as it does with the HDMI cable unplugged. Apple will hopefully come up with a firmware update or something. Don't let your warranty run out before you take it to Apple to complain. They may not have a real fix for this problem and don't want to have a recall. The system should shutdown with or without devises plugged into the device panel. That's a major problem if we have to unplug something and consider that a fix.

Class Action may be coming at some point if they don't offer a fix.

The motherboard? Mine has been hardly used, just connected to the TV and this never happened in Snow leopard.

I reinstalled mountain lion on mine a few days ago to see if I could correct the problem and it worked normaly for a while, today it started to play up on me again. It wont shut down, keeps rebooting. Can this be a coincidence? I think its Lion/Mountain Lion.

Cant stand this hassle Im going to reinstall snow leopard and let you know if I have further problems. If as you say its the motherboard then there are too many coincidences, too many people having this same problem and Apple isnt confessing something.