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May 24, 2013 12:52 AM in response to kevinr8by Gvozden,Have the same problem since yesterday. Tried to jumpstart it with the colleague's macbook, with no help.
The "solution":
After plugging other Thunderbolt display in my macbook just for second (that is third person's display ) and then mine, everything seems to work just fine. Only problem is that I have to repeat this every morning now? What gives?
P.S. Neither my bacbook nor my display are Thunderbolt.
reseting SMC did not help
Message was edited by: Gvozden
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May 24, 2013 6:15 AM in response to kevinr8by sterling r,Hello there Kevin,
I was researching the issue you describe and found 2 resources that may help. First there is this section from Apple Cinema Display: Troubleshooting steps found here: http://support.apple.com/kb/HT2810
No image on the screen
- Make sure the computer is turned on.
- Make sure the power cord is plugged in properly.
- Make sure the display cables are connected to your computer properly.
- Make sure the DVI or Mini DisplayPort display cable is connected securely.
- Make sure your computer is not in sleep mode.
- Make sure the brightness is set properly. The brightness control is under the right front edge of the display.
- Check for and install all available software updates. Software updates may provide solutions to many common issues.
Note: If the display power cord is plugged into a grounded wall outlet or power strip, find out if power to the outlet has been interrupted. You can test the outlet by plugging in something that you know works, like a desk lamp or radio.
If those steps don't get the display working then here is another article, with some pretty in depth troubleshooting for displays named Apple computers: Troubleshooting issues with video on internal or external displays from http://http://support.apple.com/kb/ht1573
Cheers,
Sterling
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Jun 21, 2013 1:55 AM in response to kevinr8by This is the real me,I have been having a similar problem. The display is recognised by the Mac, but it is black. It started happening after a software update. Unplugging and replugging initially fixed it. Then problem returned. Tried reseting SMC; then zapping PRAM brought it back. Then after sleep, it stopped working again.
I have just fixed it again. This time I returned to basics: historically, most problems on OS X are caused by 1. corrupt caches, 2. corrupt preferences, or 3. hardware faults. Since the problem affects both user accounts, I searched *all* the preferences and safe preferences and found all the instances with "displays" in the name and trashed them. On restart the monitor has come back again. Fingers crossed.
FYI: you can clear your caches with a Safe Boot.
1. Startup holding SHIFT key until you see progress bar. It will be a slow startup process.
2. At login screen, click RESTART.
Specs:
3.4Ghz Intel Core i7 iMac (2012)
Mac OS 10.8.4
24" Cinema Display with Mini DisplayPort plugged into Thunderbolt port on iMac.
