sleep wake problem with Yosemite on my Mac Mini Mid 2012

I Have the speaker disconnectiontoo and seems to work for me too, in fact seems to work. Bizarre Bug !

hope they fix it propery soon.

Geoff Harrop

So it really seems like a sound driver problem... I would guess Yosemite cannot handle the 2 audio outputs (speakers jack and hdmi).

Has anyone tried yet, whether it works, if speakers are plugged in, but the monitor is is connected through VGA (with thunderbolt adapter) instead of HDMI?

That would also result in only 1 audio output device, and maybe no conflict...? (Unfortunately I have to wait till I can put my theory to the test)

I'm also having this issue - when I enable the screensaver (auto locks computer) and let it be for the night, the next morning I get a black screen and neither wireless keyboard or wireless mouse connects. I'm /assuming/ the computer is frozen, and have to hard restart. The computer is set to never sleep, hard disks sleep when possible, and wake for network access. I'm not sure when exactly this issue presents itself, as I perform exactly the same steps when attending meetings (1-2 hrs), and don't have a problem coming back from the lock screen.

Moral of the story: Don't update your work machine to .0 versions of software. I like to learn the hard way!

Mac mini (Mid 2011)

2.3 GHz Intel Core i5

8 GB 1067 MHz DDR3

Intel HD Graphics 3000 512 MB

I just want to point out that I had this problem before Yosemite. I don't think it's a software problem - it seems to be a hardware problem that relates to the Mac mini (as far as I can tell).

It's interesting to read that various people have found a kind of fix for it by unplugging their audio equipment, but the way I have things set up here would make that very awkward for me. Anyway, I don't see why I should do it because I need that stuff to be plugged in. My Mac mini is in an inaccessible position underneath a stack of filing trays (which is why I like it: it keeps my desk space free). If I had to start plugging/unplugging stuff every time I sleep the computer, I think I'd go nuts.

Got everything solved this way.

1. Speakers connected to Screens that are connected to my Mac mini using HDMI and Thunderbolt ports. Sound is much better.
2. Original iPhone headphone connected to my Mac mini audio line in / headphone. I'm able to receive and answer calls from my Mac. Even I can continue my call using my iPhone. So Cool
3. I can bring my Mac mini back from sleep state without any problem. MY PROBLEM SOLVED HERE.

Thanks for the support from apple user.

I removed the HDMI cable and replaced it with a DVI->HDMI cable. The system no longer sees the second sound interface. So far, I've been able to get it to wake out of a sleep without any problems. I wouldn't call this a fix, but a temporary workaround. I usually have a secondary USB DAC for my audio connected and I expect it would cause the same problem if I return to that configuration. Apple still needs to fix this one.

I should also note that my external monitor is connected via thunderbolt to DVI converter.

Mac mini (Mid 2011)

2.3 GHz Intel Core i5

8 GB 1067 MHz DDR3

Intel HD Graphics 3000 512 MB

hi

can you please explain for me what you mean by connecting speakers to the monitor? My monitor only has one audio-in, I have my monitor connected to my Mac Mini through HDMI and I do hear sound through the monitor speakers, but not great quality

thanks

same here! mac 2012 with 10.10 First couldn't figure out what was wrong but it happens to me almost on a daily basis. Never had this before. Hope Apple comes with a big fix fast.

I have the same type of computer and same problem (Mac mini - late 2012). It's really annoying. I've had the computer for two years and never had a problem until yesterday when I upgraded to Yosemite. 😟 I have a USB Apple keyboard, btw.

I also can confirm what I was suspecting:

some macs, including my Mini (late 2012) just could not handle 2 different audio outputs under Yosemite 😟

The problem didn't exist under Mavericks, therefore it is no HW failure. I also installed Yosemite 4 times (clean and upgrade), so it definitely isn't a one time only.

My workaround is like Mark Tucker1's: I just use a thunderbolt-to-VGA adapter.

For those who still suffer from this problem: eliminate one audio output to solve the issue.

You can do it either by not using the headphones plug and connect your speakers to the monitor (if your monitor has an audio out, mine does not), or eliminating a direct HDMI connection (as HDMI transfers video and audio). Mac Minis are shipped with a HDMI-to-DVI adapter, use that one with a DVI cable, or any other adapter, till Apple solves the issue.

We know they can, they did it already 🙂

Well, that blows. This is my work computer and I need dual monitors as well as sound. Thus I already use both the HDMI and Thunderbolt outputs. 😢

That's not a lost case. As said: pull the audio plug, and it will work. If you can't do that, use the HDMI port with an adapter. In that case you will need another cable, though.

The same...

My monitors AOC 27" - E2752SHE have one Audio Earphone out (3.5 mm jack) and one Audio In as you can see in the picture below. You need to connect your speaker to the audio out