2012 Mac Mini blank screen on wake from sleep in Mavericks

I was also having the same problem, so I hope my fix helps some of you who are on this thread. My Mac mini wouldn't wake from sleep, or so I thought. I have it connected to a Westinghouse 22" HDTV. After perusing this thread and doing some research on my display, I found that my maximum compatibility resolution was only 1080i, (the TV is 720p but will accept up to 1080i through the HDMI port) and my mac was trying to feed it 1080p. I changed the display setting to scaled at 720p first, which blew my display size up to enormous proportions and no amount of underscan could shrink it enought to fit. Since my TV manual says that it will accept 1080i on HDMI, I changed it to 1080i. I have been using this setting all week and have had zero issues with my Mac since. Hope this helps some of you! 🙂

I have a iMac 27 from the year 2011.

I have installed Mavericks last week and i noticed the same problem...

After screen goes to sleep, i can't recover. Black screen.

I turned off the sleep screen and everytime i want to protect the screen i turn on screen saver.

No solution yet? How is it possible by now ?

Thanks in advance.

google darkwake=0 !

after you set this flag it works just like before.

The 10.9.2 update did NOT solve it for me.

This is one of many problems in Mavericks. And I'm a developer, so I know something about software bugs ...

MacBookPro11,3

2.3 GHz Intel Core i7

16 GB 1600MHz DDR3

NVIDIA GeForce GT 750M 2048MB

500GB SSD

OS X 10.9.2 (13C64).

I still keep my old 10.6.8 MacBook Pro on my desk for all the things that don't work in Mavericks.

I purchased a new Mac Mini in March 2014 running 10.9.2 and hooked it up to an Acer monitor that I used on an old Mac Mini running 10.6. Everything was fine until I opened Filemaker. Whenever I clicked the mouse, the screen would go black. I thought the program was corrupt and perhaps the file. What was unusual was that the program and file worked fine with 10.8.5 on my iMac so I blamed it on Mavericks and the Filemaker program. However after downloading and reinstalling the program, the screen would black out even with a Filemaker starter file - not just mine. So, after changing my mouse, keyboard, and monitor... low and behold I found it was the monitor. Not one black screen, not one crash, just perfect. The monitor that worked was a Hanns.G JC 199D which ironically would not work with the Mac Mini running 10.6.

This is a horrible problem. The problem has existed for almost half a year and it's still unresolved after three updates.

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Try 10.9.3 - according to the new beta program that would be a way to submit feedback and potentially capture real data on the problem.

BTW - to get 10.9.3 search for apple betaseed. It is public, but still a beta. Be careful installing it on critical machines.

I've got the same issue with a 2009 Mac Mini.

Connected to TV via a DVI > HDMI convertor, was working perfectly before Mavericks upgrade.

I tried all the solutions above but the one that worked for me was setting the darkwake flag to no, look here for details on how to set it http://mactips.dwhoard.com/mactips/system/wake-on-demand

I've found the problem!!

Mavericks for some reason overheats the GPU.

I downloaded a free 3 day trial of Temperature Gauge Pro http://www.tunabellysoftware.com/tgpro/

It showed a GPU 0 diode temperature of 122 degrres C. I think that's about 250 degrees Farenhiet. Insanely hot. No wonder the poor thing was crapping out. TGP alows fan control and so I set them to maximum and watched the temp come down quickly.

After all these months of frustration it turned out to be a simple fix. So I bought the program for $10. Sure a lot cheaper than having the Apple Experts replace a GPU or CPU like some have sugested.

What I still can't figure out is why Apple won't fix the problem from thier end and just update the fan parameters on Mavericks.

I bought Temperature Gauge Pro to test this while I was running 10.9.2 and I have not had the black screen problem since (I have TGP set to spin the fans up to full speed should any sensor temp average more than 80DegC), however I did also upgrade to 10.9.3 shortly afterwards, so cannot rule out the possibility of a coincidence.

So far so good however.

A good test would be to disable TGP. I tried that and the Black Screen of Death came back in no time. I watched the temperature gauges on the GPU climb to insane temperatures and then the screen blanked out. I restarted, set the fans to max, and haven't had a problem since.

So I have a MacMini5.2 (running 10.9.3). Been dealing with the black screen after prolonged sleep for a couple weeks. Also noticed that this little box is HOT. I don't do any sort of heavy duty computer work 0 just web browsing and watching movies a couple times a week. So I downloaded TGP. Made a few changes to the default settings. Within minutes of typing an email, I heard the fans kick in. Might be onto something here. Will report back tomorrow after I see if I can wake this thing up in the morning.

UPDATE - appear to have fixed my problem.

Ran Command +R @ startup (hit the commands after I heard the startup charm, but before I saw the little wheel start to spin). Turns out that something about the startup drive was corrupt. Not sure exactly what, but Restore repaired the disk. Did a reboot, put the system to sleep several times for various lengths of time (5 mins, 20 mins... now 8 hours), and it wakes right up.

Not suggesting that this is the fix for everyone. Just wondering if the last OS upgrade was less than perfect. My girlfriend's MBA upgraded the same week that I upgraded the Mini and hers works fine.

Good luck all.