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My rMBP 15" just shut down by itself when idling, screen turned off.

When I rebooted it, I checked the Console to see why it shut down, and found this message: 10/27/12 1:21:36.000 AM kernel[0]: Previous Shutdown Cause: -108

What is Shutdown Cause -108?

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up vote 1 down vote accepted

According to this page, Shutdown Cause -108 seems to be due to a lack of memory.

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The Title of that Page is "Macintosh System Error Codes Explained (Pre OS X)", so i doubt the explanation would apply to this case. – J.C. Oct 28 '12 at 12:33
You're absolutely right. I didn't see it. – Alex Oct 28 '12 at 12:35
Whilst Mac OS System Error Codes: 0 to -261 is archived by Apple, and describes error codes (not shutdown causes), I should not rush to dismiss its relevance. Compare with a recent answer about error code -60, which does appear to correspond with <Debug>: Previous Shutdown Cause: -60 – Graham Perrin Apr 5 '14 at 9:29

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