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- Apr 29, 2011
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I have a (2H) 2010 Mac Mini model that keeps restarting itself at random times.
The frequency of the restarts are probably 2-3 times a week. I'll return to my desk and am treated to the main login screen, where I have to login and all my programs have to be relaunched.
Occasionally, I even get a weird error message that overlays over the entire screen... "You need to restart your computer. Hold down the power button until it turns off, then press the power button again"
I thought this may have been a cooling problem, so I got a USB fan and have it cooling the CPU. Even now, after I restart I feel for heat and the mac mini is very cool, not hot.
The mac shows a problem report after restart...
You shut down the computer because of a problem.
"thread_invoke: preemption_level -1, possible cause: unlocking an unlocked mutex or spinlock"
Has anyone had this issue or have any suggestions?
The frequency of the restarts are probably 2-3 times a week. I'll return to my desk and am treated to the main login screen, where I have to login and all my programs have to be relaunched.
Occasionally, I even get a weird error message that overlays over the entire screen... "You need to restart your computer. Hold down the power button until it turns off, then press the power button again"
I thought this may have been a cooling problem, so I got a USB fan and have it cooling the CPU. Even now, after I restart I feel for heat and the mac mini is very cool, not hot.
The mac shows a problem report after restart...
You shut down the computer because of a problem.
"thread_invoke: preemption_level -1, possible cause: unlocking an unlocked mutex or spinlock"
Has anyone had this issue or have any suggestions?