After I installed Yosemite the mac freeze after sleep.

Same issue here too. Tried SMC reset, PRAM reset, there's nothing in the audio jacks, nothing seems to be helping. Looking forward to seeing if anyone else can figure this out...

Same issue here on a 2015 MacBook Air 11" with Yosemite 10.10.5...cannot reproduce it on a regular basis yet, but in the last 2 weeks it happened at least two time...When I wake up the MacBook from Sleep, the login screen shows up, but I'm not able to use the mouse (there is no cursor) or the keyboard, e.g. to focus the password field and enter my password. The only way to get it back working is an ugly hard reset via holding the "Turn on button" for several seconds...this needs to be fixed, hearing the same issue from other Mac users around...

I have the same issue on a 2014 Macbook Pro Retina with El Capitan 10.11.1

Its a pain having to sometimes hard reset the computer when I lift the lid.

I think I will report it officially to Apple, its not good enough.

(my lads cheap Windows laptop never does it)

On May of 15th 2016 I have the same issue like SenseiFtLauderdale.😕 So many months after installing some later update of Yosemite.

I remember this issue appeared on September last year for the first time. I hope the upgrade to El Capitan resolves it, but not.

Today I reseted SMC, but since issue appears randomly, I do not have the result of my action.

I have a MacBook Pro (Retina, 13-inch, Late 2013) with OS X El Capitan Version 10.11.4, so the issue is not connected just with Mac Mini, but also with another hardware.

2 dbl76: Have you already reported to Apple ? If so, what did they recommend you ?

Yosemite may be the worst version of the Mac OS in the last 15 years, IMO. El Capitan has eliminated every problem that I was experiencing with Yosemite. El Cap (10.11.x) is what Yos (10.10.x) should have been, and I highly recommend that you upgrade.