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Level 1

32 points

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.

Mac Pro, macOS Sierra (10.12), Eizo CG241W

Posted on Dec 14, 2016 9:28 AM

99 replies

Jan 24, 2017 10:53 AM in response to FineWine

Interesting - 10.12.3 is not showing as an available update for me, yet there it is in the app store. I'll be interested to see any replies to this, too.

flymosez

Level 1

4 points

Jan 25, 2017 9:02 AM in response to pierrechapuis

Thank you for sharing!

It solved my panic!

Kozyinn

Level 1

19 points

Jan 28, 2017 7:17 AM in response to FineWine

Initially on 10.12.1 no problems with AirBook. After upgrade to 10.12.2 I encountered the black screen problem. After upgrading to 10.12.3 no further problems.

FineWine

Level 1

48 points

Jan 28, 2017 10:53 AM in response to Kozyinn

Did you wind back to 10.12.1 then upgrade to 10.12.3 or did you do one of the two main fixes mentioned above then upgrade to 10.12.3

FineWine

Level 1

48 points

Feb 4, 2017 7:38 PM in response to FineWine

10.12.1 🙂🙂 > 10.12.3 = I am pleased to report all is well after my upgrade this day. 🙂ℹ

Feb 4, 2017 7:49 PM in response to FineWine

Same here. Thanks!

Feb 7, 2017 8:09 PM in response to pierrechapuis

This solution worked for me thank you!

I tried zapping the PRAM prior to this and it didn't work. Entering the password once the screen goes black worked like magic!

leolic

Level 1

4 points

Jul 19, 2017 11:16 PM in response to ateliercunha

I have the same black screen except that there is not even a cursor. It's totally black!

dhb06

Level 1

4 points

Aug 23, 2017 4:14 PM in response to ateliercunha

typing the pw and hitting return did nothing to change my black screen. screen went black after installing sierra on my iMac. Now what should I do?

Black screen after Sierra update (today)