Mac Mini Sleep Issues

That-Guy

macrumors 6502a
Original poster
Feb 25, 2012
652
56
UK
So I have a late 2012 Mac Mini, I have had the same issue using Mavericks, Yosemite and El Capitan.

If my Mac Mini goes to sleep for long periods of time (over an hour for example) my monitor will not power on when the system does. I know the Mac wakes as I can remote desktop into it, which also turns the monitor on. But when I disconnect from remote desktop the monitor goes off again.

So for the last 3 versions of OS X I have had to disable sleep due to the monitor not coming back on.

I always do a fresh install of OS X between versions too.

Anyone else experiencing this? or had something similar?

Anyone know of any possible fixes?
 

That-Guy

macrumors 6502a
Original poster
Feb 25, 2012
652
56
UK
It it really annoying after 3 major releases of OS X and still no fix.

Im starting to wonder if its a hardware issue that Apple simply can't fix?
 

Crosscreek

macrumors 68030
Nov 19, 2013
2,854
5,726
Margarittaville
So I have a late 2012 Mac Mini, I have had the same issue using Mavericks, Yosemite and El Capitan.

If my Mac Mini goes to sleep for long periods of time (over an hour for example) my monitor will not power on when the system does. I know the Mac wakes as I can remote desktop into it, which also turns the monitor on. But when I disconnect from remote desktop the monitor goes off again.

So for the last 3 versions of OS X I have had to disable sleep due to the monitor not coming back on.

I always do a fresh install of OS X between versions too.

Anyone else experiencing this? or had something similar?

Anyone know of any possible fixes?
Probably your display settings on your display or what port you have your display set up with.

For example my Dell monitor would not use power saving on my Mini hooked up via HDMI to HDMI but in I hook it up TB to DVI it works fine.

Hope it helps.
 

That-Guy

macrumors 6502a
Original poster
Feb 25, 2012
652
56
UK
Probably your display settings on your display or what port you have your display set up with.

For example my Dell monitor would not use power saving on my Mini hooked up via HDMI to HDMI but in I hook it up TB to DVI it works fine.

Hope it helps.
Thanks it's HDMI, I did try a cheap Display Port to HDMI cable about a year ago but still had the same problem.

Wondering if it may be the monitor itself which isn't compatible it's a Samsung SA350. Sadly don't have another monitor to test.
 

Crosscreek

macrumors 68030
Nov 19, 2013
2,854
5,726
Margarittaville
Thanks it's HDMI, I did try a cheap Display Port to HDMI cable about a year ago but still had the same problem.

Wondering if it may be the monitor itself which isn't compatible it's a Samsung SA350. Sadly don't have another monitor to test.
What ports are on your display? If you have DVI I would suggest a MonoPrice TB to DVI. I think your problem is HDMI. MonoPrice has excellent cables at a cheap price but don't Know if they are available in the UK.
 

That-Guy

macrumors 6502a
Original poster
Feb 25, 2012
652
56
UK
What ports are on your display? If you have DVI I would suggest a MonoPrice TB to DVI. I think your problem is HDMI. MonoPrice has excellent cables at a cheap price but don't Know if they are available in the UK.
Sadly only HDMI and VGA :(
 
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LaurieAnn

macrumors regular
Jul 6, 2011
213
80
I have a brand new Mac Mini late 2014 that's still running Yosemite. My Samsung monitor consistently wakes to grey snow. Most of the time I can get it to go away with hitting the space bar or escape key. Sometimes I have to turn my monitor off and on. I'm connected via HDMI to DVI. I'm considering Crosscreek's suggestion of a MonoPrice TB to DVI. There is a huge 18 page discussion over at the Apple Support Forum about this long standing same issue.....

https://discussions.apple.com/thread/6627963?start=255&tstart=0
 

jgelin

macrumors 6502a
Jul 30, 2015
901
1,063
St Petersburg, FL
I too am having the same problem. My acer monitor is hit or miss when waking from sleep. Right now it is currently not detected and is black as I am typing this. The fact that my monitor only comes on sometimes is absolutely the worst thing I have experienced with hardware like WHY not just work? Very 'un-apple' like of a problem.
 

rshrugged

macrumors 6502a
Oct 11, 2015
920
645
I returned a late 2014 Mini because of this sleep to wake issue(s). There's other threads at ASC with reports of 'monitor won't wake' and/or wakes to 'technicolor'. AFAIK, unfortunately, it seems it hasn't been cured for everyone.

So far, I've found no 'aha!' commonality among the affected set-ups. Even reported 'cures' vary -- fresh OS install, different cables such as using a MDP to DVI without adapter, cable with ferrites at each end, use of an active adapter. Maybe one of these will work for someone here.
 

MRrainer

macrumors 65816
Aug 8, 2008
1,260
705
Zurich, Switzerland
Sometimes (very seldom) my HP LP 3065 (connected via TB2DL-DVI adaptor) also doesn't wake up correctly.
Either no picture or it looks like the resolution has decreased massively.
It looks like 3rd-party USB gear sometimes plays a role in this.
I never had this problem with a very old 24" Dell LCD (via HDMI). It's still connected via HDMI, as a 2nd display.
 
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