My 2013 rMBP regularly freezes (screen stays on but freezes as well). I have Yosemite 10.10.1. I couldn't see such behavior in 10.9 and I don't think it's a hardware issue (had the machine serviced and an Apple Hardware Test was performed, no issues found).
In the console I found the "Previous shutdown cause: -112".
Now, I found various lists and also a header file where this error code occurs but it probably is not connected to this issue.
Anybody has any clues regarding this problem? It happens at least once a week. Thankfully most data is preserved after the restart, but it is worrisome anyway.
Best Answer
We have a small group of 2012 and 2013 retina MBP and only one in the group has the -112 restart cause logged when it freezes in a hard manner. The rest have never once froze hard or shut down/rebooted spontaneously.
No diagnostics from Apple show a specific failure - the SSD has been tested extensively and doesn't have any other errors that fsck lists or corrects (other than the typical minor and correctable filesystem corruption that a hard reboot causes).
In the last 3 months, it has logged two -112 restarts and two -128 restarts.
If you paid for AppleCare - take it in and get it repaired. If you have to pay for a repair, it will likely be the $300 to $400 flat rate repair where they send it in for factory diagnostics and overhaul.