2012 Mac Mini blank screen on wake from sleep in Mavericks

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2012 Mac Mini blank screen on wake from sleep in Mavericks

I just upgraded from Mt Lion to Mavericks and now my Mac Mini does not awake properly from sleep when I press a key on the keyboard. It stays dark but I can type in my password even when I can't see the input space and then hit the return and it then the screen functions normally. I have reset my SMC, zapped PRAM, ran Disk Utilities and DiskWarrior so I think I am covered on these. I have a Asus monitor connected by HDMI. Not sure what else to try. I see the problem surfaces occasionally for other versions of OS X and for a variety of Macs. Thanks. Doug

Mac mini (Late 2012), OS X Mavericks (10.9)

Posted on Oct 24, 2013 5:43 AM

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Answer 1

Doug Stoner Author

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Oct 24, 2013 5:49 AM in response to Doug Stoner

Oh one other thing - when I put the Mac Mini to sleep and then awake it with a keystroke, it is fine. It is when I leave it so it goes to sleep on its own that is the problem. Thanks. Doug

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Answer 2

Doug Stoner Author

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Oct 24, 2013 6:47 AM in response to Doug Stoner

Okay so here is more info as I have been experimenting with this.

Actually my second post is incorrect. It does stay blank if I put it to sleep but here are the observations:

My Asus 247 monitor upon sleep will go blank and then after a few seconds will show a window saying no HDMI input detected then be blank. The screen light changes from blue to amber at this point.

Once it is amber and I try to wake the Mac Mini, the light will change back to blue and the monitor displays a message saying HDMI input detected. Then it stays blank but I can see my cursor in the corner and it displays on the blank screen. I can move it around normally.

If at this point I turn off the monitor and turn it back on, the screen comes back to normal and I can type in my password and go from there.

In another case if the screen is blank, I can type my password in and then when I hit enter, it is functioning correctly.

I did not have this problem at all in Mt. Lion and nothing else has changed.

Any help/insights would be greatly appreciated. Thanks.

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Answer 3

Oct 24, 2013 9:56 AM in response to Doug Stoner

Same computer, Same issue as you. Trying to find a fix.

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Answer 4

lllaass

Level 10

210,417 points

Oct 24, 2013 10:05 AM in response to chase8246

Mac mini, no sound trough HDMI after...: Apple Support Communities

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Answer 5

Oct 24, 2013 10:22 AM in response to lllaass

That is for 10.8

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Answer 6

Oct 25, 2013 12:53 AM in response to Doug Stoner

Same issue with Mac mini mid 2010 and LG Monitor connected via HDMI...

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Answer 7

Errz

Level 1

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Oct 25, 2013 6:48 AM in response to Doug Stoner

same for me but on Dell Monitor via dvi

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Answer 8

Oct 25, 2013 7:00 AM in response to Doug Stoner

Similar issue w/ mac mini and Maverick, after going to sleep. Tried zapping PRAM, nothing. Finally booted up correctly when I dropped to a single monitor (via DVI) rather than one monitor via DVI and one monitor via HDMI.

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Answer 9

Oct 25, 2013 7:16 AM in response to Doug Stoner

I have exactly the same problem! Happened right after the upgrade to Mavericks.

Michael

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Answer 10

igle87

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Oct 26, 2013 6:23 AM in response to Doug Stoner

I too am expriencing the same problem. I wake up my (Mac Mini 2012) and all I get is a black screen with my mouse cursor, If I let it sit idle for 15 seconds or the monitor goes back to sleep for inactivity and then if i try to touch a key to wake the computer again, this time around the log in screen appears normally.

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Answer 11

igle87

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Oct 26, 2013 6:24 AM in response to igle87

And this occured right after installing Mac OS X mavericks, it never did it with Mountain Lion!

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Answer 12

Oct 26, 2013 3:52 PM in response to Doug Stoner

Same problem, Maverics on Mac Mini 2012, Asus monitor (there was no problem with Mountain Lion).

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Answer 13

Tmccc0

Level 1

10 points

Oct 26, 2013 9:31 PM in response to Doug Stoner

Same problem. 2012 mac mini, HDMI connection to ViewSonic monitor. Neve had this with Mt Lion.

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Answer 14

Oct 27, 2013 1:45 AM in response to Doug Stoner

Same problem. 2012 mac mini, HDMI connection to Philips monitor. Never had this with Mt Lion, it's started after the update to Maverick..

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Answer 15

Oct 27, 2013 3:43 AM in response to Doug Stoner

Same problem. 2011 Mac Mini, HDMI connection to flatscreen. Problem occurs since update to Mavericks. Even after (hard)restarting... grey screen starting mac, but afterwards blank screen, cannot login anymore (since i dont see nothing anymore) (even after few attempts).

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