sleep wake problem with Yosemite on my Mac Mini Mid 2012

I have the exact same issue. Tried playing around with power save settings to no avail. Will try the power button trick and cross my fingers for a patch.

Up date on Partial solution...

IT DOES NOT WORK AFTER ALL!

tried leaving it for a couple of hours and yes I he my screens back but as before everything frozen.

only solution now seems to be full shut down every time, rather like the old windows PC I left behind 2 years ago !

Geoff

The point is:

'Does Apple ever read these discussions? Are we talking between us without Apple even know we have this problem? Every time it freezes, I don't see any report going to Apple. Do you ever see reports sent to Apple from your machine? Is there an Apple website where we could signal the problem?'

ancorasudigiri wrote:

The point is:

'Does Apple ever read these discussions? Are we talking between us without Apple even know we have this problem? Every time it freezes, I don't see any report going to Apple. Do you ever see reports sent to Apple from your machine? Is there an Apple website where we could signal the problem?'

Apple does read this forum. Every post generating a work order from a discussion forum is an untenable method of reporting issues. This is a community support forum.

For specific feedback -

https://www.apple.com/support/feedback/

Please take a look at http://www.apple.com/contact/ for details.

I phoned Apple support today and explained the problem we are all having. Got a case number, that's all. These wake / sleep problems are low priority I was told and they are slowly pushed to Engineering...fix may be part of next update.

They did ask me to check whether it does it in Safe mode...I'll try that tonight ( Safe mode is start mac with finger on Shift). That's because the few that reported it so far by phone had all McAfee installed and that was the culprit for them..I don't know about the guys on this forum but I don't have mcafee installed. Apple also asked whether starting it from Sleep using the Power button works !...which is the partial fix posted here.

Bear in mind this partial fix only appear to work if the mac is set Never to Sleep though..

If the posters having issues can also provide what peripherals are connected to what ports on the Mini at the time of the issue, it would be very helpful.

For example, if all sleep wake issues are connected to a monitor not working when connected via DisplayPort, or connected via HDMI, or a DP-to-DVI adapter, etc.

Another suggestion is to look at logs in Applications -> Utilities -> Console and type sleep in the top right search box with "All Messages" highlighted in the left pane. (looks like Spotlight (magnifying glass)).

I would go one step further and recommend not upgrading to Yosemite, unless there is a very specific Yosemite-only feature that some one needs.

In the Windows/Bootcamp area, there are worse problems than just being unable to log-in. There is potential data loss.

PS: If Steve Jobs was running the company, this would not have see the light of day with a release.

Same problem here on my 2012 mac Mini. Sigh. I'd hate to have to set sleep to never - I chose this computer in part because of energy efficiency. But shutting down every time you leave the computer is unacceptable. Is it easy to go back to an older OS? (I don't have that much computer experience, and don't know how easy it would be to revert to what I had before, which was Mountain Lion - I never got around to installing Mavericks.)

I have a HDMI to DVI adapter to connect my monitor. I am currently in Safe Mode and so far have not had it lock again. I do run Sophos AV when not in Safe Mode

I'm also having this problem and i noticed something when I installed yosemite, that it wasn't picking up the speakers I have plugged into the mac mini audio jack whenever it woke up from sleep. So I went into sound preferences and set the output as the speakers. Since then the problem has been occuring so I tried unplugging the speakers and sure enough, the computer wakes up from sleep perfectly fine. In short, speakers plugged in means that it freezes upon waking up whereas the HDMI or built in speakers means that it starts up fine. Not sure if this helps?

Not only a mini problem, also having the same problem on my 2012 27" iMac.

This also worked for me.

I have a set of Harmon Kardon Sound Sticks III attached to my Mac Mini.

This is such a strange bug - if I remove the WIFI interface from my Network Preferences (not ideal as I do not have a wired connection for this machine) the freeze also does not happen, even if the speakers are plugged in.

Ok, i can approve the workaround with unplugging headphones/audio out on my MacMini late 2012. After unplugging sleep wake works as it should. This can't be a "normal" software problem in CoreAudio because i can send out system audio or itunes music via bluetooth and BT audio adaptor to a normal 2:1 stereo system without sleep wake issues.

Just tried the speaker solution mentioned. I have Bose external speakers, switched off and set sound output to hdmi monitor and still froze when woke up... but when speakers fully unplugged 2012 Mac Mini woke up just fine. Sound or video driver issue?

I have the exact same issue. After sleep mode computer is frozen. (Late 2012 Mac Mini i5) I have to perform a hard restart - I've tried resetting PRAM and disconnecting the power cable. Nothing worked. Everything was working fine until the Yosemite upgrade was installed. I use my mac audio in/out as my audio interface for my studio - I hope they can correct this soon.

Same problem here as well, late 2012 mini with speakers going through the headphone jack. When it first boots after the crash if often doesn't recognize the auto output until I unplug and replug it