May be another issue you're seeing. Apple fixed this with a firmware patch more than 1.5 years ago. I'd get in contact with Apple support.
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Random Black Screens
- Thread starter harvester32
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May be another issue you're seeing. Apple fixed this with a firmware patch more than 1.5 years ago. I'd get in contact with Apple support.
OK, thank you. Note that these two d.a.c threads indicate the problem is still around:
screen goes black | Apple Support Communities
https://discussions.apple.com/thread/3910798?start=15&tstart=0
Mac Mini (2012) HDMI losing sync (blank screen/... | Apple Support Communities
https://discussions.apple.com/thread/4490924?start=420&tstart=0
Interesting. As you can see, most people had their issue resolved long long ago with the firmware fix.
The best course of action is always contacting Apple directly. They can't fix a problem if they don't know about it and forums like this make issues appear much wider spread than they really are (take a look at the iPhone bending issue which turned out to be only about 9 people in total).
Blank screens
I had this problem today after a power outage, with a 2012 mac mini, and a philips monitor on HDMI. This forum gave me a fright, but Resetting the SMC fixed it for me.
"To reset the SMC on Intel-based Mac Pro, iMac, and Mac mini computers, as well as Xserve:
Shut down the computer.
Unplug the power cord.
Wait fifteen seconds.
Attach the power cord.
Wait five seconds, then press the power button to turn on the computer."
Resetting the System Management Controller (SMC) on ...
https://support.apple.com/en-us/HT201295
I had this problem today after a power outage, with a 2012 mac mini, and a philips monitor on HDMI. This forum gave me a fright, but Resetting the SMC fixed it for me.
"To reset the SMC on Intel-based Mac Pro, iMac, and Mac mini computers, as well as Xserve:
Shut down the computer.
Unplug the power cord.
Wait fifteen seconds.
Attach the power cord.
Wait five seconds, then press the power button to turn on the computer."
Resetting the System Management Controller (SMC) on ...
https://support.apple.com/en-us/HT201295
2014 Mini has this problem since 10.10.3 update
My mini has been doing this since the 10.10.3 OS-X update, very random and very annoying. I did post on the Apple Support site and they sent this link:
https://support.apple.com/en-us/HT201177
I've done the SMC reset and checked all the connections. Going to try the PRAM reset this evening.
My mini has been doing this since the 10.10.3 OS-X update, very random and very annoying. I did post on the Apple Support site and they sent this link:
https://support.apple.com/en-us/HT201177
I've done the SMC reset and checked all the connections. Going to try the PRAM reset this evening.
Tried resetting everything and done fresh install on new SSD but still not fixed
Since 10.10.3 I've been seeing little artifacts on my 2nd monitor and occasionally on my main monitor. Usually some red appearing for a few seconds and flashing.
I am seeing occasional flashing also on my main display.
But I am mostly annoyed by my secondary display (Mini DisplayPort to DisplayPort connection) just randomly going black and the monitor still believes it is getting a signal from the computer.
I have tried the SMC reset and PRAM reset. Neither helps.
My mini is a late 2012 model with Yosemite 10.10.3. I have identical HP ZR2440w monitors.
Oh, and my primary display is connected via HDMI.
But I am mostly annoyed by my secondary display (Mini DisplayPort to DisplayPort connection) just randomly going black and the monitor still believes it is getting a signal from the computer.
I have tried the SMC reset and PRAM reset. Neither helps.
My mini is a late 2012 model with Yosemite 10.10.3. I have identical HP ZR2440w monitors.
Oh, and my primary display is connected via HDMI.
This problem has the following caracteristics: 1) It happens with Macbook Pro, 2) It happens also with Mac Mini (I'm mad about mine!), 3) Apple does not do anything to solve it, 3) Never happens with Windows machines (although it happens with my Mac mini when running Windows with Bootcamp.