iMac won't reboot or shut down after 10.11.5

Title says it. My iMac was fine before the update came through yesterday. I went to reboot it tonight because the RAM being used was realllllly high and I thought a solid reboot after yesterday's update might be a good thing (don't ask why - just my logic)... and surprise! - it cleared the menubar and quit finder, but wouldn't shut down at all. I could still use the dock to load and use apps. I saw another thread that mentioned deleting Wacom stuff. I went in and cleared out all of my found Wacom items. Still won't shut down. I've reset the VRAM several times. I can do a forced shut-down, and it will sleep ok. Activity monitor doesn't show anything super weird, even though it's still showing Wacom and Tablet drivers running.

Anyone else running into this? Or have an idea?

Please?

iMac, OS X El Capitan (10.11.5)

Posted on May 17, 2016 5:12 PM

37 replies

F.A.T.

Level 1

4 points

Jul 23, 2016 11:20 AM in response to Karrie34

First force quit Bamboo Core using the activity monitor, this will enable you to restart your current log in without trouble.

Next is to prevent this Bamboo Core thing from autoloading the next time your computer starts. Head to system preferences -> Users and groups -> log in items and click the minus sign on the Bamboo Core thing.

This will prevent it from loading the next time you restart.

Hope this solves your restart issues as it helped me solve mine.

Not sure how my Wacom tablet will work without this app being automatically on though..

Jul 25, 2016 1:41 AM in response to Karrie34

I had the same issue, I tried all the same solutions found in other answers, without success.

Then yesterday I found this one:

"After resetting the printing system my iMac (2011) sleeps again"

My iMac does not sleep after install of El Capitan

It WORKS!

I deleted all the printers in the System Preferences > Printers & Scanners and then I added them again.

After the restart both the Sleep and Reboot worked again.

Aug 16, 2016 2:16 PM in response to rameshrkdebta

It worked. I deleted all of the login items.

Sep 24, 2016 3:27 AM in response to addesso

Thanks for posting adesso.

Deleting this driver fixed mine...

Digidesign_CoreAudio.plugin

violapwr

Level 1

4 points

Sep 29, 2016 8:15 AM in response to Karrie34

I had this problem too. When I tried to restart / shut down, my computer would get stuck. The finder menu bar would disappear and my apps would quit, but it would get stuck on the desktop.

Here's what I found out: even though on the dock, it appeared all my apps quit, when I opened the force quit window, I would see certain apps still open (usually textedit, preview, or safari). What I did: now before I hit 'restart' or 'shut down', I open the force quit window and force quit any app that was still had not managed to quit. Then I would hit 'restart' or 'shut down'. I haven't had the hanging problem since.

Hope this helps!

Jan 22, 2017 6:38 PM in response to Karrie34

My computer is frozen. It won't shut down. It keeps asking for login info, but it's garbled and not registering every letter as I enter them so it never shuts down.

May 19, 2017 8:55 AM in response to addesso

This solution works! Thank you very much!

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iMac won't reboot or shut down after 10.11.5