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screen lockup with Sierra

Posted: Sat Oct 08, 2016 2:28 pm
by Gary Velie
I have experienced my screen totally locking up several times. It absolutely freezes and I am not able to move the m
cursor with either the mouse or the track pad.

I have also experienced several applications failing to load promptly and displaying the rotating beach ball. When that happens I am able to to the apple menu and force quit the application.

Any suggestions?

Re: screen lockup with Sierra

Posted: Sun Oct 09, 2016 4:15 pm
by Stephen Hart
Just a guess, but this sounds like it might be a system file that the OS can't find.
If you saved the installer you could reinstall.

I'm assuming you have a good backup.

Re: screen lockup with Sierra

Posted: Mon Oct 10, 2016 8:57 am
by Jay Cline

Re: screen lockup with Sierra

Posted: Mon Oct 10, 2016 3:57 pm
by Stephen Hart
I skimmed the discussions Jay posted links to and two things jump out:

Non-native drivers, Logitech was mentioned.
More than one display connected (perhaps also requiring a driver).

Do either of those apply to you?

Re: screen lockup with Sierra

Posted: Mon Oct 10, 2016 8:40 pm
by Ray Bentsen
I know that i had to update my Logitech Control Center to v3.9.4 after installing Sierra. I had lockups and some spontaneous display sleeping after first installing Sierra, but after the Logitech update I now have no issues.

And, yes I have two of these devices ... so that I always have one fully charged. (but I always also have a wired mouse plugged in, for just this type of situation)


Re: screen lockup with Sierra

Posted: Wed Oct 12, 2016 4:49 pm
by BarbJ
Increase disk space to install Sierra
Postby BarbJ ยป Tue Oct 04, 2016 6:53 am
I originally posted this to another section of the forum. I don't know if this is the same problem you had, but this is what I did:
I tried to install Sierra without enough disk space, and the installer program told me I didn't have enough space and I would have to restart and try again. I restarted and it came up with the same message. I finally looked in the installer and chose my startup disk, restarted it, and it went back to my old familiar startup screen. I began trashing old files and thought, there must be a more efficient way to free up space. I went on the Apple website and found this: I hope it helps any of you with the same problem.