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

Oct 22, 2015 11:44 AM in response to sander_p

I found a recipe that has been stable for me for a few hours. Adding a second card causes the logout symptom to return, no matter how many displays are connected.


10.11.1

1 x nVidia Quadro FX 1800 [borrowed from an old dell computer]

1 display x dvi

1 display x dport


If this remains stable, I may consider [after a time machine backup] trying the new nvidia driver and adding a second video card to see what happens.

Oct 22, 2015 12:08 PM in response to JCrebbin

This has "fixed" my issue (turning off the option of "separate spaces" in my multi monitor setup), but having "separate spaces" and its associated functionality of the menu bar and the dock appearing on whichever display I happen to be working on is something that I have grown to LOVE in the new OS's. This is a significant step back for me to have to disable this.


I work with three Apple Cinema displays, currently with a mix of graphics cards in my Mac pro - ATI and NVidia, I'm hoping I will solve the problem by replacing the ATI one with another NVidia one, and perhaps using the NVidia drivers (which don't seem to be yet updated though for the recent point one update of El Capitan, or weren't last night when I looked).though


(Although other posters in this forum seem to suggest it is a problem with two of the exact same Nvidia cards in a machine. Ugh.)


I'm heading to the shop later today to buy another NVidia card, I'll report my success, or lack of it.

Oct 22, 2015 12:32 PM in response to sander_p

In response to

sander_pOct 22, 2015 3:24 PM

Yeah. While I haven't tried 346.03.03f01 yet (Last I tried was from 10/6/15)I have the exact same configuration AND issue as you. Once I start using two 120 cards, constant crash to log in screen. Seems to be an issue with Window server crashing. Normally I run three displays but have had to cut down to only 2 since El Capitan and this bug.

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Mac Pro keeps logging out since El Capitan

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