Sleep wake failure

I also specified in System Preferences/Energry Saver that the computer never be put to sleep automatically and unchecked all of the other options in the panel.

Well, this certenly prevents the machine from sleeping at all but that's no option for me; it's not acceptable having to have the iMac on and running the whole day and switch if off completely during nights. I don't have a Mac that for.

I tested also all the other option in power savings settings one by one and with each and every checkbox both checked and unchecked the sleep wake failure reappeared. Only preventing it from sleeping at all didn't lead to sudden reboots.

All in all it seems that right now IF the machine sleeps the chances are VERY high you'll have a sleep wake failure at some point.

Sad sidestory: I had installed Windows 8 via Bootcamp a while ago and this one went into hibernation like a charm. I also had thought that maybe I caried over some old drivers or stuff on my Yosemite installation from my old iMac so I had the system re-installed from scratch. Reinstalled all needed apps and manually copied the data back to the userfolders. Still the error reappeared.

I also thought that maybe some USB device had caused the troubles but the error appears also with no bluetooth devices connected at all...

I've also sent Apple more than 5 console-logs of "sleep wake failure" so they can investigate. Waiting for their response now.

To me it really seems as if something in this machine just causes these crashes along with Yosemite.

And for the record:

iMac Retina, 3TB Fusiondrive, 32GB RAM, 4GHz i7, AMD Radeon R9 M295X

The settings still allow you to put the computer to sleep manually. The automatic function is disabled.

I well know that. But it doesn't matter what put the machine to sleep - if it's hibernating it crashes. Sometimes sooner, sometimes later.

I went though this for a couple of weeks, even after replacing logic board, RAM, boot drive and OSX. I decided to make this a Final Cut Pro X only machine and leave all other work to my other Macs. FCPX, an Apple product, and the apps that come with 10.10.2 are the only ones installed. I also replaced all of the Bluetooth devices in the studio with USB, except for the wireless Apple mouse on this computer, that is the only Bluetooth device that can pair with it. As I mentioned before, the USB keyboard is the only thing that can wake it.

Most of what I did was a shot in the dark. Apple, Apple Store and the local Apple Authorized dealer were all baffled and lost. Finally, someone in the forum suggested the Bluetooth Settings solution. It's been a week without kernel panics and spinning wheels.

You mean the setting that prevents bluetooth devices of waking the iMac? This eased my problems a bit as the not so often waking iMac did therefore crash less often. However, I've tested this with a logitech mouse that actually uses a separate receiver. Even with deactivating bluetooth completely on the iMac this only lead to fewer unwanted reboots but didn't solve the problem.

Something on this machine, be it hardware, software or a combination of both, causes these crashes and reboots.

What'd be interesting:

Had ANYBODY here had Apple check the console logfiles? I mean REALLY check them, like a programmer and a technician checking what's going on? So far the guys at Apple tried to help but it was more or less standard procedure. "have you reset PRAM?" or "have you freshly installed Yosemite?" and so on...

Apple Support told me that the Kernel Panic reports were for their engineers and that support staff were not qualified to analyze. Apple Store looked at the Reports and told me it was software but could be hardware, OWC examined them and told me it was software and not their SSD boot drive but that they would send new RAM, local Apple Authorized Dealer/Service said it looked like software but that they would change the logic board just in case.

There are people on this forum that seem to know how to analyze them.

I've just found a reason of this issue. It's not OS X problem, some other application's configuration about audio.

In my case, that software is Logic Pro X (by Apple....)

In Configuration of Logic Pro X, which can select Output and Input devices, independently OS X system sound.

Please see my screen (Japanese) Output and Input device choices UE BOOM, this is my Bluetooth Speaker.

In this case, probably Logic Pro X holds Core Audio, and OS X cannot release Bluetooth or Sound assignment even though System preferences assignment.

I was very stressed Sleep and cannot wake up (Black out, invisible log in) issue, clear PRAM, Clear SMC, check Sound setup, delete preferences...everything do that. But all operations cannot work.

Please make sure your Application setup related with your Bluetooth, Sound, and some other wireless device controllers.

I found in GaragaBand (also Apple....), same this preferences setup.

At least for me that's definitely not the reason for the problem, I'm not using any audio related equipment...😟

According to the last crash log i got when the sleep wake failure occured i disabled Sync Options in System Preferences -> Displays. Today is day 3 without the sleep wake failure. It would be great if someone else could try this out. thanks.

If you mean by "Sync options" the checkbox that sync options are shown or hidden in the menubar - this I had deactivated a long time ago. Still sleep wake failure 😟

That's exactly what i meant... Sad to hear that this doesn't help. Maybe for the last three days i was just lucky 😕

I forgot to mention that i only had this problem on my MBPr late 2013. The s-w-failure never happend on my nMP...

Crap... Sleep wake failure is back. And it is back with a vengeance... 😠 Does anyone know if an utility like Wimoweh or Amphetamine can prevent this to happen? Thanks.

https://support.apple.com/kb/DL1828?locale=en_US

I had received a update notice from Apple about my Mac Mini 2012's EFI firmware 1.8 yesterday.

After updating that EFI firmware, my DVI LCD monitor's sleep not wake problem solved.

Before I solved this problem, I had turned off my DVI LCD monitor's sleep setting in System Preference's Energy Saver for months.