Mac Pro keeps logging out since El Capitan

For what it's worth, I have two brand new early 2015 13" Macbook Pro's using an Apple Thunderbolt display and both exhibit regular logouts under El Capitan running 10.11.1.

Incredibly frustrating problem but I think it even impacts situations where it's just the built in Intel graphics.

Typical Apple though, I don't think the word "beta" has any meaning with them, as far as I'm concerned they live in perpetual beta. Hopefully at some point they'll have enough billions to afford a few good QA engineers. Until then I suppose this is the best they can do with the little financial resources they have... 😉

I think they are suffering from release-date-itise, it doesn't matter if it doesn't work, at least we released it on time. Why they don't just push back the release if they hit problems is beyond me, this problem has been there since the early beta releases. On top of it all they keep nagging me to upgrade, I know it's an automated notification but I'd say its bordering on the criminal to send some one an advert to upgrade when they *know* it will lead to crashes........

I have two GT 120's, one 30 inch monitor with a normal looking cable, then one 24 inch monitor with a display port connector. I'm ready to order a new graphics card, but no idea what will work with my Early 2009 Mac Pro and have a display port and the normal connector for the 30 inch monitor. Any ideas?

See:

User Tip: Mac Pro silver tower (2006-2012) Replacement Graphics cards

http://forums.macrumors.com/showthread.php?t=1440150

As the above included, most PC cards will work with the later OSX versions. You just will not get a boot screen on a PC card.

I have the GT 120 and a PC 5770 card in my 2009 MP.

I think it is great that so many keep trying various fixes to get EC to work on our older Pros. I'm hoping in six months or so that the problems will be solved. In the interim, its going to be a Yosemite world since that does work. When and if the issues are fixed (Here's hoping!), I hope someone posts "EC Finally Works on Mac Pros" so we can check it out.

I also have this problem

I'm running the NVIDIA Web Driver 346.03.03f02 (Latest), have spaces disabled in mission control and still experience the crashing to login screen.

Early 2009 Mac Pro. Dual GT120 video cards. Dual 30" Cinema HD monitors.

This same thing happened at the launch of Yosemite. Random WindowServer crashes. Took them about 5 months to finally fix it.

Yeah having the same issues even with the current Nvidia drivers... I am in the process of reinstalling Yosemite and just bought a new PC because this crap.... expected way more from Apple specially since I have sunk in a boat load of money into them...

My 2009 Mac Pro 4,1 just updated to OS X 10.11.2. Any difference?

Where did you get the 10.11.2 upgrade? My OS X App Store app still says no updates available.

Did 10.11.2 help the WindowServer crashes?

Oh, I see. It's a public beta. Installing it now to see if it fixes the issue.

No, the beta 10.11.2 Beta (15C27e) did NOT solve the issue, it is even worse because now the screens become distorted and you have to reboot!

Contacted Apple Support Today, talked to Senior Advisor. Sent him my crash logs and explained that is El Capitan and 2 monitors. I think the common denominator is Nvida drivers for my GeForce GT120 card.

I have disconnected the second monitor which is that card and no crashes since. I will be testing more, by running only on that card and see if that makes.

I don't know how to read or meaning of crash log but this is the first thread--- (com.apple.GeForceTeslaGLDriver)

just read that the early 2009 mac pro will be concidered obsolelet in december, guess this is just apples way to give us an early warning for us to start thinking about upgrading ? kinda getting a bit of a deja vu feeling

Please provide a reference as this is highly relevant information.