Imac monitor turns off while working

Hi everybody,
I have issues with my Monitor. Every now and then my Monitor just turns black or sometimes white with blue stripes, during working.
I have to restart it and everything works fine again. Unfortunately it happens more and more often.
Can anybody help me?
Thank you

Run the hardware test that came with your computer. http://docs.info.apple.com/article.html?artnum=303081

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I am sure that is not to shut down the mac because the mac but the monitor continues to make sounds when you turn off.
I've tried both to reset the PRAM is to initialize it with os x 10.8 (2 times with updates) and also installing windows 8 but nothing for the first few days but then here goes the problem recur please help me.

Sound like a hardware issue but this is tough to tell. Run Apple's Hardware Test in extended mode at least 2-3 times. If errors appear you have confirmed a hardware issue and the machine needs to go in for service.

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No receipt for 'com.apple.pkg.JamPackWorldMusicInstruments' found at '/'.
03/05/11 12:08:30 [0x0-0x1e01e]. Com.apple.garageband [239] No receipt for 'com.apple.pkg.JamPackWorldMusicInstruments' found at '/'.
03/05/11 12:08:30 [0x0-0x1e01e]. Com.apple.garageband [239] No receipt for 'com.apple.pkg.JamPackOneInstruments' found at '/'.
03/05/11 12:08:30 [0x0-0x1e01e]. Com.apple.garageband [239] No receipt for 'com.apple.pkg.JamPackOrchestralInstruments' found at '/'.
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03/05/11 12:08:32 MIDIServer [255] MIDIServer [255] starting; arch = i386
03/05/11 12:34:35 com.apple.launchd [1] *** launchd [1] has started up. ***
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03/05/11 12:35:26 [0x0-0xd00d]. Com.skype.skype [127] WirelessAttach: IOServiceOpen error: e00002c7
03/05/11 12:35:32 [0x0-0xd00d]. Com.skype.skype [127] WirelessAttach: IOServiceOpen error: e00002c7
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Do you have backups of all the data on the startup drive? If not, do nothing else until you've backed up that data, if you still can.

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Not enough free storage space can slow your Mac down. Click your Apple menu icon top left in your screen. From the drop down menu click About This Mac > More Info > Storage. Make sure there's at least 15% free disk space.
Anti virus software, as well as third party Mac cleaning utilities such as MacKeeper and CleanMyMac can also slow your Mac down.
Check to see if the startup disk needs repairing.
Launch Disk Utility located in HD > Applications > Utillities
Select the startup disk on the left then select the First Aid tab.
Click: Verify Disk (not Verify Disk Permissions)
If DU reports errors, restart your Mac while holding down the Command + R keys. From there you should be able to access the built in utilities in OS X Recovery to repair the startup disk.
Make sure to back up all important data first before using OS X Recovery.

[S]iMac with additional monitor: built-in monitor turns off at startup

Hi,
I'm using an iMac Intel (2007) with an external monitor. I used to have the external one on the left and the iMac on the right.
Everything was fine until today, when I *just* moved external monitor on the right and changed my xrandr script like this:
xrandr --output LVDS --mode 1680x1050 --pos 0x0 --rotate normal --output DIN --off --output DVI-0 --mode 1920x1080 --pos 1680x0 --rotate normal
The thing is that now when I turn on the computer the built in monitor turns off as the startup process reaches the Xorg phase.
Do you have any ideas about why this happens?
I didn't touch the Xorg configuration at all, when I installed the system both monitors were recognized correctly.
Thanks in advance!
Last edited by ifsixwasnine (2014-04-03 13:01:06)

Hi karkhaz,
Yes, computer is usable with just the external monitor, as a temporary workaround I'm running a `xset dpms force off` to turn off and on again both monitors.
xrandr output:
Screen 0: minimum 320 x 200, current 3600 x 1080, maximum 8192 x 8192
DVI-0 connected 1920x1080+1680+0 (normal left inverted right x axis y axis) 521mm x 293mm
1920x1080 60.0*+
1680x1050 60.0
1280x1024 75.0 60.0
1440x900 75.0 59.9
1024x768 75.1 60.0
800x600 75.0 60.3
640x480 75.0 72.8 66.7 60.0
720x400 70.1
LVDS connected 1680x1050+0+0 (normal left inverted right x axis y axis) 433mm x 270mm
1680x1050 60.0*+
1400x1050 60.0
1280x1024 59.9
1440x900 59.9
1280x960 59.9
1280x854 59.9
1280x800 59.8
1280x720 59.9
1152x768 59.8
1024x768 59.9
800x600 59.9
848x480 59.7
720x480 59.7
640x480 59.4
DIN disconnected (normal left inverted right x axis y axis)

IMac turns off while sleeping

My iMac sometimes turns off during sleep mode, I did call apple care and went through utilities and the tech support said that issue should be resolved, but it happen again today. Has anyone else had the same issues? Is this also the start of some bigger issues down the line?
Thanks,
BC

HI BC,
Check System Preferences/Energy Saver. Click the Schedule button bottom right in that pane and make sure it's not set to turn off at a certain time.
According to this article, http://support.apple.com/kb/HT1237 Make sure your software is up to date.
Carolyn

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Could a power regulating power strip solve my problems? I'm guessing no, but should I do this in the future, to prevent damage to my computer? More importantly, what is likely wrong with my computer, and about how much would it cost for me to replace the part, or get it fixed at the Apple store? I did not purchase any extended warranties, so this computer is completely out of warranty.

It's been a month since I first posted, and I've got more clues and details now. After I posted my question I realized that my computer is and has been on a surge protector (and the protector light is light), so on later reflection I don't think the problem is the steadines of the power.
den.thed's suggestion seemed to work at first, although I think the longest my computer has gone without shutting down in the last month was about a week, and at this point resetting the SMC doesn't seem to be helping (not that I've turned the computer back on without unplugging it, so I haven't tested this precisely).
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Monitor turns off after boot? macmini

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Starting in safemode makes no difference. no picture.
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IMac display turns off automatically.

Hi everyone!
I have a problem with my iMac. The display automatically turns off while using the computer and I can't continue using it without forcing it going to sleep. The display turns off when the screen brightness is NOT at maximum level. If I reduce the brightness, the screen turns off. If the display it's at the maximum level, no problem, works perfect. No matter if the computer is just turned on from a cold start or if it's running since hours with high temperatures. In System Preferences there's only one option selected in the Enegy Saver section (Allow power button to sleep the computer).
Any ideas? It's really annoying working with this problem (especially at night with the brightness at maximum).
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(Sorry for my english).

Hi everyone!
I have a problem with my iMac. The display automatically turns off while using the computer and I can't continue using it without forcing it going to sleep. The display turns off when the screen brightness is NOT at maximum level. If I reduce the brightness, the screen turns off. If the display it's at the maximum level, no problem, works perfect. No matter if the computer is just turned on from a cold start or if it's running since hours with high temperatures. In System Preferences there's only one option selected in the Enegy Saver section (Allow power button to sleep the computer).
Any ideas? It's really annoying working with this problem (especially at night with the brightness at maximum).
Hope somebody can help me!
(Sorry for my english).

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I'm having a strange issue with a computer I use as a media center. XFCE4 running on Arch. Everything works great except for the fact that the monitor turns off at random. It's not frequent, but once every 10-20 minutes it will happen. Now the weird thing is that the video playback continues, when I move the mouse the monitor wakes up and the video has been playing.
I even tried power settings where nothing ever turns off, but it doesn't seem to help.
Any ideas or similar problems?

I can think of 2 options.
One is the screensaver...
The other is your dpms settings. I have in my ~/.xresources file
xset -dpms s off &
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HTH

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Monitor turns off to sleep but computer stays on???
Any clues why? I can only shut-down and it gets annoying because I like to be working in less than a minute after powering up. Any things to look for to help?

Thanks,
don't know why it'd matter if I had a warranty or not since the function
in question is apart of what I'm supposed to be getting w/ cost of computer.
Time to load the overpriced 1 ton computer into the car and demand they fix it at the apple store. This is absurd since I originally bought this computer for music creating and it's the most unreliable computer EVER as far as stability for music. My audiophile records for like 10 sec. before the sound cuts out, everytime, but of course that's not apple's fault.
Never buying apple again. This is straw that broke the camels back. Anyone wanna trade a pc for my G5?
Sorry for the venting but this is where I draw the line!
Thanks,
Henry

Imac monitor turns off while working

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