OS X Yosemite - Kernel panic

Just anecdotal info here:

MBP 15" late 2011 2.4Ghz and I've now had 4 kernel panics over the last couple of days since the upgrade to Yosemite, mostly but not always when waking from sleep. Sometimes it's already crashed when you open the screen. Tho' just a few minutes ago it panicked and all I was doing was scrolling slowly thru a web page in Safari. Rebooted itself. Really not a big enough sample to say for sure but the machine seems most stable if I just leave it running and never close the screen.

Right now I can't recall even one panic the whole time (about 10 months) I was using Mavericks, tho' it panicked from time to time under both Lion & Mountain Lion.

Same problem with my Late 2011. My install went fine. Restored my backup from my Time Machine (which for some reason took 17 hours vs. the 8 hours for Mavericks 1 day earlier). But, just now, for some reason, while watching streaming video, my computer shut down, tried to reboot once, and then did it again. Second reboot worked. Once rebooted, I got all the same error messages listed here.

FYI, I just got my computer back last week from Apple repair, where they replaced my entire logic board, RAM and battery. I then replaced the RAM with brand new 16GB Crucial RAM (from the Samsung 4GB they installed). So my CPU, GPU, graphics card, RAM and battery are brand new.

I have the same problem on my external SD when running Yosemite, launchd restarts my computer into Snow Leopard for some strange reason. I use the built-in SD card reader with a 64GB PNY StorEdge as a Secondary Boot Partition. It's a little bit slow although the random-access read speeds are EXTREMELY high (much higher speeds than a 7200-RPM drive).

I can't take this. It boots on its own; Safari keeps freezing; Mail randomly doesn't recognize established servers and passwords for linked Google accounts; my Lightroom catalog now can't backup. I am going back to Mavericks. Yosemite is broken - first time I've ever said that about an Apple OS...and I've been using MacBooks since 2009 and iPhones since 2007. The innards of my computer are brand new. I shouldn't be having these problems.

I've been using Mac OS since the pre-Mac OS X era and I can tell you it has definitely gotten worse with time. I miss the Mac OS 9, it was the best operative system ever!

Since upgrading to Yosemite I have had 4 kernel panic crashes and bluetooth and wifi issues. Seriously buggy OS, I moved away from windows 10 years ago as it was too buggy now Apple has become as slack as microsoft!!!!

I also have a similar problem and I am using a 2012 iMac. Yosemite has been running for several days without any problems. Then i came to my desk to see that it had rebooted on it's own and when I restarted I got the warning dialog saying the system had not closed normally. This has now happened again. I am convinced, after reading all of the reports on the Net, that there is a bug in Yosemite causing this. I have made no changes at all to my system since upgrading from Mavericks. I am sure Apple is aware of this by now and hope they are working on a upgrade that we will see very soon. Apple? Yes?

"I am sure Apple is aware of this by now and hope they are working on a upgrade that we will see very soon."

Would not pin my hopes on Apple sorting this out quickly. Look how they allowed the issue of ejecting external hard drives to run and run. Apple's cabal like behaviour of not even engaging on these forums can be frustrating.

Ok, seems that my problem is solved (for now). I erased my hard drive, erased all partitions, created a new one and installed OS X Yosemite using a bootable flash drive. then, I recovered my system with Time Machine.

Best of luck!

Wow, sounds like several of you are having way more serious problems than I have - so far at least. Currently it's just a minor PITA, but since I'm running on a SSD RE-boots only take a few seconds. No data loss that I'm aware of but I did have to do a disk repair for some directory corruption. If all else fails I've still got Mavericks sitting in a disk caddy in place of the SuperDrive.

By the way, be sure you send those crash reports to Apple. If they're looking at anything, that's what they're looking at (ie there's automation collating the reports) I seriously doubt they're paying employees to sift through zillions forum posts.

Hi all,

I have used instructions mentioned by anssi.vaisanen - Remove Avatron Air Display - and it seems that it fixed my problem.

Jindra