864      iPhone_iPad_Mac_apple

Black screen after Sierra update (today)

A report from a problem solved in order to understand what could be the wrong and be useful to others.

Today (14/12/2016) after a Sierra update, my Mac Pro (2010) just presented a black screen. The cursor was active and the I saw the dock (less than second) when the cursor was at the left top corner of the screen.

I tried several types of reboot and memory reset without success.

The problem was solved only by reboot with Command+R and a fresh Sierra installation.

It was a 3 hours nightmare.

Anyone with the same problem after the 10.12.2 update?

What could be wrong?

A bug?

A known version 10.12.2 problem?

An error during installation?

I hope this is solved permanently.

Thank you.

I Too had this problem on 2014 iMac 27" and after 4 hrs of level 1 then level 2 support it was determined that the update did not complete properly. Using CCC diskutils terminal mode had to actually delete partition and start from scratch. All a big serious mess. 5 hrs TM restore and I have 10.12.1 back again. Will hold off for several weeks to see if this is an Apple update/version problem.

Thanks for sharing.

I have had same issue 27 iMac 2016, currently trying to roll back to 10.12.1 via time capsule restore.

Hi guys,

I had the same issue on my MacBook Pro Late 2011 after the update to 10.12.2. (but no issue with my r-MBP Early 2015)

You will not believe me that's why I prefer to post the link I've seen:

https://forums.macrumors.com/threads/black-screen-after-update-to-10-12-2-imac.20 21483/

This worked for me !

When the black screen appears with the cursor, try entering your password then press Enter (even if you see nothing on the screen(!), and even if your session is actually booted automatically). After pressing Enter, my session was appeared and no issue after that !

Hope this can help !

Best.

EDIT: works also for other users:Re: After upgrade to 10.12.2 macbook pro has black screen

My MacBook 2012 pro, core i7 exhibits the identical problem after upgrade to 10.12.2, even down to the position of the cursor. I tried several reboots, and in the end did the Command+R at boot and installed a new version.  However this has not fixed the problem.

I am really a technical person, so now I'm stuck.

DOES ANYONE ELSE HAVE THIS PROBLEM?

I could do with some guidance on my next step?

when will learn not to install upgrades until 4-8 weeks after their release, so someone else who knows what they are doing can experience the issues before they hit me.

Did you try to enter your password and press Enter as described above ? (when you see the black screen)

Well after 5 hours successfully restored to 10.12.1 from backup, back to the future on this one.

I was more than a little skeptical when I saw your fix. But after struggling for the last 6 or so hours to no avail, I tried your idea.

It worked.

Thank you.

It seems to be a real problem, affecting several machines/different machines.

A system problem or a system installation problem? .-(

I tried to re install Seirra 10.2.2 twice. Each time same problem.  I was patient both times, pressed space bars etc.  After two hours nothing.  So I use Command+R at re boot and selected restore from Time Machine.  Thank goodness that Apple at least have got that right.  Easy steps to follow and after 6 hours system is restored to 10.2.1 and all but one file are recovered.

Big question for me is do I every do an update again?  10.2.2 clearly is not fully tested on every configuration machine.  Shame on you Apple, that's why I left MS PC's after 20 corporate years of crashes and irrecoverable failures. So how will I know when to update..10.2.3 perhaps but my confidence is rattled.

Why can't Apple state what the problems might be and come clean about this update?

I had the same problem today. All day long trying and failing...

But this last try worked:

I entered Recovery Mode and restored to the previous version of Sierra from my Time Machine external drive (fortunately I had it updated and perfectly working).

It took very long but my MBP seems to be running ok for now.

I have a MacBook Pro 2013. I tried resetting NRAM, SMC, disk repair, safe boot and so on.

I googled and found this: https://www.macworld.co.uk/news/mac/how-do-i-restore-my-mac-time-machine-3449071/

I hope it works for you.

Now I'm afraid of installing that Sierra update again or even rebooting my MBP... :-(

By the way, now Time Machine is stuck on "preparing...". :-P

Is this happening to anybody else? Is this a problem with that last Sierra update? Is my MBP too "old" for that update? Any comments? Any advice?

I still don´t know the root of the problem; but its a problem and I hope Apple support is reading this topic, because this is serious for personal users and pro users.

This worked for me too. 

I went back to the previous Sierra version from my Time Machine. It took me hours (who's gonna pay me for my time?) but at least my MPB is running ok for now. Anyway, I think Apple should fix this stupid problem as soon as possible and send a new update. Why customers would have to guess they should write their passwords on a black screen? Apple, you gotta be kidding!

最後更新：2017-08-24 11:32:29

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