OS X Yosemite Keeps Crashing To Log-In Screen

Except I only have integrated graphics and haven't had WindowServer misbehaving.

Hi, I'd recomend to use the Bug creporting center to let Apple know about this in the right way and help them to find a solution.

https://developer.apple.com/bug-reporting/

Unfortunately, you must be a registered, Apple developer to use the bug report route. I guess only developers are important enough to submit bugs. I can see this being used for beta testing, but how about "real" users who have problems? They offer no path to satisfaction.

I'm really don't think they are truly convinced about this random reboot, lockup, and return to login problem, that many users are experiencing. All I hear about is attention to wifi. I have also experienced bluetooth disconnects of late. I really don't want to go back to Mavericks, but I can't live with this random reboot much longer. Doing a complete reinstall from scratch of OS X is no fun.

I know this is a shot in the dark but has anybody tried to reset the PRAM?

Eric, you make light of this process, It would take days to follow the steps from this instruction. I have taken almost all of the steps in this article, with the exception of uninstalling/reinstalling apps. Just having an app that isn't supported by Yosemite (and was by Mavericks) should not force a Mac to reboot. I have never experienced this from any previous version of OS X? As a matter of fact, I have NEVER experienced a OS X reboot until Yosemite was installed.

Also, I haven't installed any new apps, plugins, or anything else that would cause a complete reboot, since migrating from Mavericks. I am not convinced this is something I have done.

This is a problem with OS X, that is making my iMac unstable, that did not exist before I upgraded to Yosemite.

Hi, I had the same problem with the last version of mountain lion (10.8.x-don't remember..), and the problem lasted until 10.9.2, when I updated with the Combo version (not sure if that was what fixed it, it was fixed suddenly).

It was exactly the same problem of crash to login screen, but it always was Quicktime related (playing too much with Quicktime triggered the crash)

Yep, I've reset my PRAM several times.... no luck

Just another user with the same issue.

Macbook Pro (Retina, 15-inch, Late 2013)

Yosemite 10.10.1

I never had an issue with Mavericks. don't have multiple user accounts. No TrendMicro, no MS Office products. Just crashes to the login screen. At least once a day. The only common pattern I've noticed is that it happens most frequently at the end of the day, when I'm quitting several programs consecutively. I do use an additional external display.

It's the most frustrating thing. Feels like I'm using a PC again.

Apple really needs to fix this.

Yeah mjclemente, they really do. I've just done a clean install of Yosemite. Took me almost a day to get everything back up and running.

This failed to fix the problem as it's just logged me off again :-(

I've submitted a bug report but have heard nothing.

Come on Apple, fix this!

I filed a bug report and has been asked to provide output of 'sysdiagnose', I guess I will have a stable system for a while ;-)

Please attach the output of 'sysdiagnose' collected while the problem is occurring or if not possible taken after the issue has occurred. 'sysdiagnose' can be triggered by pressing Cmd-Opt-Ctrl-Shift-Period, and it may take a few minutes to complete. When ready, the output will automatically be revealed in a Finder window (or it can be manually retrieved from /var/tmp).

I'm getting this issue after installing Yosemite on my work PC yesterday. Oddly it ONLY happens on the login screen when I'm unlocking the PC - I'll log in and everything will restart or I'll be dumped back to the login screen as I login (and then have the same thing happen).

I've tried every combination of settings / uninstalling programs and can't seem to pin it down. Like the others, I'm using an external monitor, so I'm guessing it's related to that.

It doesn't seem to happen if I force the computer to sleep when I lock it (but haven't had much time to test this theory out). It happens after I lock my computer and after a certain amount of time has elapsed, i.e. if I lock it and unlock it in the next minute or two (regardless of it sleeping or not) it's fine.

So frustrating, hope they fix it in 10.10.2.

I too would really like to know if this is something Apple is looking into, or if they are ignoring this as just a bunch of whiny users? If this is truly a problem in Yosemite where are all the thousands of others with the same problem? This is just as important as having wifi problems. It seems to be limited to this forum and only a handful of different users. I'm starting to think it might just be something I did and just can't find it.

Still have this problem,i have run EtreCheck and it comes up with this problem

Problem System Launch Daemons: ℹ️

[failed] com.apple.watchdogd.plist [Details]

Has anyone else ran EtreCheck and come up with this same problem?

I have the same problem as described here:

• Random log out of all connected users;
• Mostly triggered when switching users, but also when using the Mail.app, etc.;
• MacBook Pro Retina with external monitor;
• Yosemite 10.10.1.

But one thing is generated each time I get logged out is a WindowServer crash log. Googling these information gave me the following post: Guide: How to solve Yosemite memory leaks and CPU usage

I've done the 4 recommended steps. But it is still too short period of time to be sure that it solved the problem. I need more time to be sure that it solved it.

But anyway, my mood has improved when I saw that there is potentially a solution out there.

Maybe it might work for you.

No Little Snitch here. I really doubt this is causing any problems. In fact, I doubt any application is causing this reboot issue. It is inside the OS where the problem lies.