Stuck when shut­ting down

Mac|Life - - ASK -

I’ve up­graded to High Sierra and it went fine. The only snag is that when I shut down, some­times the pointer is left on a black screen and my Mac gets stuck. When I then force shut­down, I get a warn­ing when next start­ing up that macOS didn’t shut down cor­rectly. How can I fix this ir­ri­tat­ing prob­lem?

This is a shut­down panic or freeze, and should never oc­cur. It hap­pens when macOS is try­ing to shut ev­ery­thing down but some­thing brings it to a grind­ing halt. Your prob­lem is iden­ti­fy­ing that some­thing.

Test whether it af­fects an­other ac­count on your Mac. If it doesn’t, then it’s likely to be old or bro­ken soft­ware in your Home folder, prob­a­bly in ~/Li­brary, rather than an is­sue within macOS it­self.

The best way to iden­tify the cause is by brows­ing the log af­ter such an “im­proper” shut­down, us­ing Con­so­la­tion ( eclec­ti­clight.

co/down­loads). Search for “sys­tem boot:”, which marks the be­gin­ning of the startup process, then work your way back to the en­tries be­fore the shut­down to iden­tify clues about what went wrong.

When you’ve lo­cated the last log mes­sage con­tain­ing “sys­tem boot:”, take a look back at the pre­vi­ous shut­down to iden­tify po­ten­tial causes of your prob­lem.

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