MacBook Pro can’t stay awake
QMy MacBook Pro enters a wake-sleep loop every minute, running until its battery is drained. This resolved with Sierra, but has returned. Energy Saver is set for system sleep after one minute, and the log gives a ’Shutdown Cause’ of -60 each time. How can I fix this? by Gena dy
AThis is very unusual: these cycles may be the result of a serious disk error. Shutdown Cause codes given in the log following startup, and sometimes when waking, should be 5, indicating the previous shutdown was ’clean’. Negative values imply hardware issues.
A cause code of -60 indicates a serious disk error, normally a bad master directory block. Test for hardware faults first by restarting in Diagnostics mode and running its tests, then restart in Recovery mode and run Disk Utility’s First Aid on your startup SSD.
If that can’t be repaired, restart in remote latest Recovery mode ( ç, å, and R keys held), reformat the SSD, re-install macOS from there, and restore from your backup. If that doesn’t fix it, you’ll need to make an appointment at a Genius Bar.