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Mac Pro keeps logging out since El Capitan

Upgraded my Mac Pro to El Capitan, all went well. I logged in, then logged into iCloud and that also went well. But then it crashed with a kernel panic, restarted OK.

It now is running OK but after a few minutes it will log me off and back to the password prompt. Very frustrating and not able to work with it in such very short windows of time.


Anybody else seeing this?


Paul.

Mac Pro, OS X El Capitan (10.11)

Posted on Oct 1, 2015 4:29 AM

Reply
393 replies

Mar 31, 2017 8:22 AM in response to Paul Hodson3

Hi JCrebbin,


You deserve a medal for your workaround!!! I'm sending you a big hug from Toronto, you saved my nerves and time while working on the finalization of the project for my client. So far my Sierra is as stable as rock. Before it was logging off every 5-10 minutes and I wanted to throw my Mac away. Still, it is ridiculous that we, users have to help each other instead of hearing from the Apple directly. Yes Apple, I am very disappointed. I am used to work with separate spaces though, so hopefully they will be able to figure it out and fix it soon. Thank you again. Brani

Oct 1, 2015 8:28 AM in response to Paul Hodson3

I have the same problem with my MAC PRO 2009. I reinstalled software twice and removed all of my startup aps. then I pulled the 2 USB3 cards I added 1 year ago. Still had the same problem. As a last resort I unplugged my 2nd viewsonic monitor and the trouble stopped. I reinstalled my USB3 cards still no trouble. I plugged back in the 2nd monitor and problem is back. Apple programmers seem to have a problem with duel monitor operation. They screwed me up once before by not supporting 2 monitors from 2 cards. Just lazy programming if you ask me.

I don't know if anyone is running 2 monitors out there but unplugging the second one may help.

Oct 1, 2015 9:37 AM in response to james N Lewis

I too have two video cards and three monitors in my early 2008 and tomorrow I will try disconnecting. Since my original post I have had three more kernel panic crashes.


This isn't good, how long before anybody picks up on this and supplies a fix do you reckon? I know we are a long way down the age chain now but there's a lot of them in use and in business.


Paul

Oct 1, 2015 12:00 PM in response to Paul Hodson3

Same issue for me:


Mac Pro 4.1, early 2009, quad core 2.66ghz

16GB Ram

512GB SSD

2 x Nvidia GeForce GT 120 video cards

3 x Apple Cinema Display 23" monitors


Since upgrading to El Capitan this morning, my system crashes constantly. By constantly, I mean every few seconds. Sometimes the system just goes to sleep; other times it locks up an the screen goes funny; other times it completely shuts down. The cause seems to be the multiple monitors. It runs fine with only one monitor. But two or more and it crashes. The crashes seem to occur when I switch between application windows on different monitors.


I have updated the Nvidia drivers to the latest release.


Any help gratefully received.


Mac Pro (Early 2009), OS X El Capitan (10.11)

Mac Pro keeps logging out since El Capitan

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