My display blacks out at no regular intervals when using OSX.

I can still hear my app's running but I have to put my mac to sleep using the power button (not power down) then login as usual. This changes from once every min to once every few days?
The image below shows the console reading of what happend but i dont know enough to make sence of it. I have re-installed OSX and still no result.
Anyone who can help I would be really greatfull i have it under warentee but need a computer to do my work.

This is happening to me too (2011 27" iMac) screen started to go black randomly since a day or two, also happened in Windows once. Rebooting or forcing the computer to sleep and wake up again fixes it temporarily.

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27 inch thunderbolt display blacks out after Thunderbolt Firmware Update 1.2

Bought 2 new 27 inch TB displays for two different machines and after a couple of days the Thunderbolt Firmware Update 1.2 appears on my Mac Pro with one of the displays installed. So I install the firmware update. Now my display blacks out periodically and I keep getting Graphic Display Errors with a request to sent the errors to Apple. Running a 32 GB Mac Pro (late 2013 circular style) I have three monitors connected (two 20 inch cinema displays and the new 27 inch display). This machine is supposed to be able to handle three 4k monitors or 6 standard TB displays. I've seen the posts about the blacking out with this monitor but I didn't have any problems before the firmware update and now I've got them pretty regularly. I had the blacking out problem on an earlier monitor and took one of the monitors back and Apple gave me another one and this is the replacement. Same problem, but this one only started after the update. I'm hoping someone from Apple reads these messages and can let me know what's up.
BTW, I also have an older 27 inch Apple monitor that ran perfectly on this machine so I'm disappointed that I spent all this money and now get the blacking out issue.
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I have my Thunderbolt display connected to my MacBook Pro and have been experiencing the same issue, getting worse over time. The folks at my local Apple store did not know what to do about it. So, I looked around and tried different thing.
The one thing that seems to be working is to System Preferences > Build-in Display > uncheck “Automatically adjust brightness.”
I hope this helps.

Display blacks out

so on my ibook g4 mid way through using it the screen blacks out (there is a very faint glow) this is happening more regularly now and atm as a temporary fix i just close the lip and open it.
iv looked through some forums and it seems like a problem that i cant fix myself...
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Welcome to Apple Discussions!
When the display blacks out, can you shine a flashlight through the back and still see your desktop? If so, you likely have a problem with the back light or inverter or possibly a cable, which will affect the built in display. Since you can see your display at times, I imagine that the graphics chip itself is still working OK.
Is your old display an external display? If so, it should work.
Good luck!

DISPLAY Blacks out sometimes

Most of the time when I sit back down at the computer desk my display black out for a second. The light turns of, but it comes right back on. Someties it does it several times before it stops. I know thta there is alot of static in my apartment. Does anybody know anything about this? If so, is there anything I can do to prevent this?. It is pretty annoying. Any help would be appreciated.
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I have a Mac Pro, and a Mac Mini. I have owned tha Mac Mini for about two years. I have found the same issue with my mac mini. I do believe that it is normal, and it has something to do with the shared memory. I ran it for over a year as my main Mac, and I experienced the very same thing. I don't think it is anything to worry about, unless it happens over and over. My Mac Pro does it form time to time, although very very rare. It also could have something to do with the display, analog vs digital etc. I believe the digital signal experiences very short interrupts every so often, and that in my experience is normal
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Hi,
I have a macbook pro (2.5GHz Intel core i7, 16GB RAM and 10.8.5) for which I use Apple Thunderbolt display as my extended monitor and almost everyday after connecting my external monitor for 3 or 4 hours, Apple thunderbolt display blacks out and starts blinking or displaying weird colors on every blink.
To stop it from doing that, I have to disconnect and reconnect my thunderbolt display.
Is this is universal problem or something wrong with my macbook pro ?

I've got two 27" Thunderbolt displays hooked up to my Mac Pro. Both displays blank out irregularly multiple times per hour.
I've exchanged one of the displays for a brand new display and the problem continues.
I've updated both displays using the firmware update a few months back and the problem continues.
I'm using separate Thunderbolt cables rather than the built-in cables and the problem continues.
Bullocks.

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One thing to consider, maybe you accidentally move the mouse into the sceensaver hotspot and then once it starts to black out, then you move the mouse to turn off the screen saver and it seems like it blacks out?
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Hello
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jrevco(at)gmail.com

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Message Edited by dwightH on 01-18-2009 08:28 PM
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You are still under warranty. Call Apple Care. Make sure you get a case number as all repairs have an additional 90 days of warranty.
#1 - You have 14 days from the date of purchase to return your computer with no questions asked.
#2 - You have 90 days of FREE phone tech support.
#3 - You have the standard one year Apple warranty.
#4 - If you've purchased an AppleCare Protection Plan, your warranty last for 3 years. You can obtain AppleCare anytime up to the first year of the purchase of your computer.
Take FULL advantage of your warranty. Posting on a message board should be done as a last resort and if you are out of warranty or Apple Care has expired.

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Sounds like it is dying. Is it still under warranty? If it is, I suggest you take it to Apple and ask them to repair it.
Allan

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Hi
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http://www.geocities.com/worldofdarkness89/MBPscreen.png
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Hello and Welcome to Apple Discussions.
Have you tried Zapping the PRAM?
The PRAM holds various settings such as display settings.
regards
mrtotes

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Hi there
If you like you can do a System restore to a previously known good state.
http://h10025.www1.hp.com/ewfrf/wc/document?cc=in&lc=en&docname=c03327545
Alternatively try uninstalling current graphic driver from Display adapters section in Device Manager & reinstalling the latest Graphic driver from your HP support page.
Then restart the system, check.
Regards
Visruth
++Please click KUDOS / White thumb to say thanks
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My display blacks out at no regular intervals when using OSX.

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