IMac enters sleep mode while playing Blizzard games

About every 20 seconds my iMac enters sleep mode while playing Blizzrard games. When I click the mouse or touch a key on the keyboard the iMac wakes up and the game is still running. This has been happening more frequently over the past six weeks. Now it occurs every twenty seconds. I have turned off my sleep mode settings, reset the SMC, loaded the TechTool Deluxe and ran a diagnostic. When TechTool Deluxe came to testing the video ram the utility crashed. I ran TechTool Deluxe a second time and it crashed again while testing the video ram. My iMac only has this problem playing Blizzard games. I have contacted Blizzard and they don't have an answer. Is it my video card? I have the NVIDIA GeForce GT 130 512 MB graphics card. Any help would be appreciated.

Likely is the Video card, but...
Have you blown the dust out lately?
Get Temperature Monitor to see if it's heat related...
http://www.macupdate.com/info.php/id/12381/temperature-monitor
iStat Menus...
http://bjango.com/mac/istatmenus/

Similar Messages

IMac Enters Sleep mode during video playback

My imac started behaving badly a few weeks ago. It seems that at times of video play back, itunes, youtube, vlc, that my iMac just says nope and goes to sleep. I have tried resetting the ram during start up and it took care of the issue for all of an hour. I am at my wits end here please somebody give me a solution.

The times that your machine goes to sleep are times when you are maxing out the RAM. However, try looking in your Console>system log for any references to exceeding the maximum temperature for more than 30 seconds; that would indicate a thermal problem, probably the power supply unit failing.

My Mac goes into sleep mode while playing videos or DVDs.

This started happening last week. I was watching Veronica Mars and all of a sudden my computer goes to sleep. At first I though it was because I had it on energy saver mode, but it just kept on happening. Tonight I wanted to watch Camp Rock on Disney XD and after a few minutes it shut down. I went on You Tube to watch my friend's videos and the same thing happened. Does anyone know what's wrong?

Welcome to Discussions - the problem is probably overheating, which causes your computer to sleep. Look in you Applications>Utilities>Console and see if your System log shows "maximum temperature exceeded for 30 seconds". This would indicate a problem with your Power Supply Unit or a faulty temperature sensor. You should take it in to be looked at.

Computer enters sleep mode while streaming

Did Apple or anybody ever fix this issue? My computer has been on for 3 years without sleep.

Likely is the Video card, but...
Have you blown the dust out lately?
Get Temperature Monitor to see if it's heat related...
http://www.macupdate.com/info.php/id/12381/temperature-monitor
iStat Menus...
http://bjango.com/mac/istatmenus/

OSX Lion iMac fails to enter sleep mode.

Hello
My 2010 iMac fails to automatically enter sleep mode after upgrade to OSX Lion.
There is no problem using the keyboard shortcut or the sleep command in the menu.
However, it´s driving me crazy that it does do it by itself.
The energy saving options are set correct (enter sleep mode after 10 minutes).
I have tried to reset PRAM as well as SMC.
Internet sharing is turned off.
Any ideas......?

I have the same problem - late 2009 iMac, will not sleep after set period of inactivity. I have tried many things, including SMC and PRAM reset, 10.7.1 update, disabling Little Snitch, GlimmerBlocker, etc. etc., even removing Wacom tablet drivers and Flip4Mac, and disabling websharing (Apache), and switching internet sharing on and then off again. No difference. The only benefit is that I have learned I can sleep my Mac by pressing and holding the play button on the remote...
One thing I have noticed though is that I can hear disk activity when under 10.6 I would not expect it. Maybe something is accessing the disk and that is keeping my Mac from sleeping.

IMac beeps once before entering sleep mode

My iMac 24 inch has started to beep once before entereing sleep mode. The LED thinks blinks whilst it is asleep, which I assume is normal. Is this indicative of a hardware fault? I understand that a single beep on startup indicates a ram problem.

If you listen carefully, you may find this beep is
coming from the hard drive, not the speakers (plug
headphones in and find out if it still makes the
beep).
Some hard drives make this beep if they have a
re-positioned write, which is a non-fatal error. You
can usually reformat to re-allocate the block and
stop the error, or you can live with it.//
Hi
Yes you're correct, it doesn't come from speakers. It not makes the same faint beep (rather like a heart monitor blip) when closing down and always after the screen has gone blank. I have noticed that if you put a CD-ROM in the DVD drive and its still spinning when you put it into sleep mode you don't get the sound.
P.

My iPod nano will go into the sleep mode while a song is playing a second after the screen goes blank; the song will stop and I will then have to press the sleep/awake button to pick up where the song left off. How do I fix this?

My iPod nano will go into the sleep mode while a song is playing a second after the screen goes blank; the song will stop and I will then have to press the sleep/awake button to pick up where the song left off. How do I fix this?

Your problem is that your iPod is not sensing that your headset is inserted. There is a pin inside the headphone port on the Nano that senses if it is inserted fully. If it does not sense anything, it will pause playback to save battery power when the screen dims. Here are the solutions:
Insert it fully. This will fix it for most of you. Press that thing in there all the way. You should feel and hear a full click when it is fully seated. If you can see ANY silver of the headset jack, it is not fully inserted.
Debris inside the headset port. If you are totally unable to push the headset jack all the way, the most likely problem is that you have crud inside your headphone jack. Try blowing it out or slapping it against your palm with the headset port facing your palm to try and get the stuff out. If you look into he jack with a light, you should be able to see to the bottom. The entire inside of the headset port is white, so if it looks dark at the bottom, that is the crud that is keeping your nano from working.
Headset jack or plug issue. If you cannot solve the problem with 1 or 2, then there is likely something physically wrong with either the headset jack on your headphones or the headset port on the nano.
If none of the above works, you need to take it to the Apple store or wherever you purchased it. I think they are still under warranty.
i

Mac Pro unexpectedly enters sleep mode

Ok so I installed Leopard last weekend on my Mac Pro and all initially went well with the install. After installation was done, software update appeared and stated I had approximately 4 downloads to install. So I had done this and prepared to reboot. Before rebooting, a window appeared stating that it needed to update the Boot cache. So I clicked on "OK" and the computer went into its shutdown sequence. When the computer reset, I noticed there was no start up chime and the system just sat there with a black screen. I thought perhaps it was updating the boot cache and it may take a while to finish. So I went afk for about an hour and came back. Still nothing. This is when I knew there was something seriously wrong with my system.
After speaking with Apple support and trying several things to get it to boot, the support rep stated that it will need to go into the shop for repairs. I had taken it to an authorized service center and they diagnosed the problem as a bad logic board. They had replaced this and had ran their diagnostic tools on it to make sure it was running normally. They kept it overnight and ran Apple Service diagnostics in a repeating loop on the system. They had also cold booted the system 30+ times per the work order.
After I brought it home and booted it, everything was seemingly running fine. Then I received a page from work (I'm a support rep) which required me to boot into Windows using Boot Camp to solve a client's problem. After I had done this, I booted Leopard back up and was playing around in it for a few minutes to check out some of the new features. I had then ran World of Warcraft to play a bit and to check out the performance increase in Leopard. After about 5 minutes of playing, my system unexpectedly entered sleep mode. Obviously I was confused so I had brought it out of sleep mode by hitting the enter key. The system came back for about 2 seconds and immediately went back into sleep mode again. This happened about 4 or 5 times before I finally shut the system down.
The first thing I did after reboot is to check the energy saver options. Both hard drive and monitor energy options were set to "Never". I then checked for software updates. There was both an SMC firmware update and a Boot Camp EFI(?) firmware update. I had done the SMC firmware update first and then after successfully updating this, I had done the Boot Camp firmware update. After reboot, the system went into sleep mode on its own approximately 5 minutes after reboot. This time I had made sure NOT to run my game as I had a suspicion that this could be causing the problem. It entered sleep mode anyway unexpectedly. After waking it up again by hitting the enter key, the desktop appeared again for about 2 seconds before going right back into sleep mode. I called the service center again and they said I would have to bring it in for them to look at. Needless to say, I am NOT very pleased.
Has anyone ever heard of anything like this happening with a Mac Pro? I had never had any problems when I was running Tiger with any application, not even my game. The service rep where I took it said it was just bad timing that the logic board went during my OS upgrade and that the two had nothing to do with each other. My brother has a Mac Pro as well and he had upgraded to Leopard. Of course his computer works fine where mine is a sleeping fool. Does anyone have any ideas or theories as to what could be causing this? More importantly, does anyone have any suggestions on how I might be able to fix this on my own? If you could please let me know, I would appreciate it. Thank you in advance for your time.

Wow, who are you dealing with? The first time my logic board was replaced, the techs never bothered with looking at anything else as being the problem. However, when I pointed out the power supply fan problem, they focused on that being the cause of the problem and fixed just that. I was somewhat concerned as I know some of these techs do not look at other parts of the machine as potential problem causers. I was afraid that I would hook up my system only to experience the same problem as before. Luckily, that was not the case.
I am glad that your system appears to have the same problem as mine did. I would suggest that if you take it back to them again for a fan fix to have them run the system for about an hour after replacing it. They should be opening apps, checking the iStat widget, etc to try and make it break. If they can't after an hour or so, I think it should be ok.
This whole ordeal makes me question the quality of parts used by Apple. My brother has an iMac G4 where the hard drive died after 2 months of getting it new. Now this issue with mine and yours with the bad logic board and the power supply fan. Who knows how many other customers report hardware related problems?

While playing a game my iphone went completely frozen, it does not respond to any input, not even to holding down the on/off hey. Any ideas?

While playing a game my iphone went completely frozen, it does not respond to any input, not even to holding down the on/off hey. Any ideas?

Try a reset. That is holding the sleep/wake and home button together until you see the Apple logo and release. That will reset the iPhone, but will not affect your data.
Thanks! It worked just fine!
MRP66

Mac mini keeps entering sleep mode

Hi. I have a Mac mini that has this annoying problem where it keeps
wanting to enter sleep mode. This problem seemed intermittent at first.
What I notice is that my mini would enter sleep mode whenever I try to
encode mp3. This seems reproducible. When it enters sleep mode,
I can wake it up by pressing the power button. However, it goes back
in sleep mode after a couple seconds after it wakes up. The only way
I can get it out of sleep mode is to quit iTunes and eject the audio
CD.
Things I've tried:
Energy Saver settings: Computer sleeps after 3 hours inactivity,
display sleeps after 3 hours inactivity, unchecked "Put hard disk(s)
to sleep when possible". I tried disabling energy save. No luck.
I also tried to uncheck "Allow Nap" box in the Processor settings.
However, it always checks this after a reboot.
If I insert a DVD movie, I can watch it w/o any interruption.
Anyone else seen this problem? Thanks in advance.
Jim

Hi Carl. I was unable to find com.apple.AutoWake.plist in my
system. Deleting com.apple.PowerManagement.plist didn't
help.
I decided to try your open firmware instructions. I like the
boot loader. It reminds me of the Sun's boot monitor.
I did the reset-nvram, set-defaults, reset-all. It didn't
help though.
I don't think it is my power supply, either. The reason why I
don't think this is the problem is I can watch DVD and listen
to audio CD just fine. My sleep problem would only occur
when I try to rip an audio CD. I can assure you that I draw
plenty of power just playing a DVD movie.
My guess is I have a power management configuration
issue or a hardware problem. Since this has a Unix core
underneath, I started poking around in the usual places
for log files. I found the familiar /var/log and stumbled
on system.log. Looking at the file, I found something
that caught my eye.
Aug 17 01:06:19 Jim-Fridlunds-Computer kernel[0]: Power Management received emergency overtemp signal. Going to sleep.
Doing a 'grep overtemp system.log', I got the following:
Aug 17 01:04:13 Jim-Fridlunds-Computer kernel[0]: Power Management received emergency overtemp signal. Going to sleep.
Aug 17 01:04:37 Jim-Fridlunds-Computer kernel[0]: Power Management received emergency overtemp signal. Going to sleep.
Aug 17 01:04:56 Jim-Fridlunds-Computer kernel[0]: Power Management received emergency overtemp signal. Going to sleep.
Aug 17 01:05:37 Jim-Fridlunds-Computer kernel[0]: Power Management received emergency overtemp signal. Going to sleep.
Aug 17 01:05:51 Jim-Fridlunds-Computer kernel[0]: Power Management received emergency overtemp signal. Going to sleep.
Aug 17 01:06:00 Jim-Fridlunds-Computer kernel[0]: Power Management received emergency overtemp signal. Going to sleep.
Aug 17 01:06:13 Jim-Fridlunds-Computer kernel[0]: Power Management received emergency overtemp signal. Going to sleep.
Aug 17 01:06:19 Jim-Fridlunds-Computer kernel[0]: Power Management received emergency overtemp signal. Going to sleep.
If you look at the time stamp, you'll see that each event
is only a few seconds apart. This matches with what
I was seeing. Machine goes to sleep. I press the power
button and it wakes up and goes back to sleep. One
big endless cycle. The only way I managed to get out
of it is to quit iTunes and to eject the CD.
Yes, I did install the Xcode 2 development kit that came
with the Mini MAC OSX setup. I eventually want to write
software for the Mac. So, I most likely installed the
CHUD tools package that you had mentioned.
I think the equivalent command line command for
disabling the nap feature is 'hwprefs -v cpu_nap=false'.
When I do that, I get the overtemp event and my mini
goes to sleep. Zzz.
In any case, my mini seems to be detecting false overtemp
condition. Either I have a bad temp sensor or my power
management overtemp threshold is set way too low. It's
possible encoding audio CDs is enough to heat up the
PPC core, but it happens way too fast. I'm thinking my
temperature sensors are not set correctly. If anyone has
schematics for the mini, it would most likely be a Dallas
temp sensor chip. I'm not ready to open up my mini yet
since it is still under warranty. I'll take it in the Apple
store in Walnut Creek this weekend.
Anyway, thank you guys for all your help. I found my
experience on this forum to be quite pleasant. People
here are very helpful.
Jim

Home Sharing turns off as soon as my computer enters sleep mode. How can I work around this issue?

Home Sharing turns off as soon as my computer enters sleep mode. How can I work around this issue?

please start firefox in safemode (by pressing the shift-key while it is launching) & go to ''firefox > options > advanced > general'' & disable hardware acceleration.
for some background on that issue you can also refer to [https://bugzilla.mozilla.org/show_bug.cgi?id=812683 bug #812683]

MacBook starts and instantly enters sleep mode

In the past few days I've been experiencing a reoccurring problem with my macbook pro. I press the power button, hear the startup of the drive, and then sometimes the display will turn on for a second(mostly stays off), and then enters sleep mode instantly. I can not get on my macbook unless I turn it on and let it sit for 15-20 minutes, then MAYBE the display will activate. Please help.

Do you hear a chime at startup? How do you know it is entering sleep mode and not turning off? Does the cursor move on the screen? Here is something from another user's experience:
I had the same issue with my 2008 iMac and Apple support walked me through the fix yesterday...
1. Shut the computer down by holding the power button for 10 seconds
2. Restart the computer and press shift at the same time until you see the progress bar start moving
3. Once you reach the point where your screen goes dark and you see the cursor, type the first letter of the username for your computer, then hit Enter, then type your password, then hit Enter.
4. After a moment, you should see the spinning beach ball
5. Your screen should then move on to something along the lines of "Completing OSX Installation" (I can't remember the exact wording). Let it finish. After that it should go to your normal desktop and the issue should be fixed. (If your screen goes pitch black during this process, hit the space bar. I thought it wasn't working, but the screen was just sleeping).
Apparently it's an issue with an automatic update that never quite got past the login screen.
MacBook Pro (15-inch, Mid 2010)- Intermittent black screen or loss of video

My iPad locked up while playing a game. Now can't turn it off or do anything.

Nt iPad locked up while playing a game. Now I can't get it to shut down or do anything. The buttons don't do anything. Help!!

Have you tried a reset ? Press and hold both the sleep and home buttons for about 10 to 15 seconds (ignore the red slider if it appears), after which the Apple logo should appear - you won't lose any content, it's the iPad equivalent of a reboot.

Can't use mouse/keyboard/trackpad when waking iMac from sleep mode

Basically as the title says. When I wake my iMac from sleep mode I am unable to use my keyboard/trackpad/mouse during the login window. Once the screen goes black by itself, after a minute or so I can then log in properly.
Yes the keyboard/mouse/trackpad are all connected when it wakes from sleep as I can use any of them to wake it from sleep, I just can't move them or type with them in the login window.
Processor 3.4 GHz Intel Core i7
Memory 24 GB 1600 MHz DDR3
Graphics NVIDIA GeForce GTX 680MX 2048 MB
Software OS X 10.8.5 (12F37)

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

27Xi stays on displaying "no source signal" after I turn off my PC or PS4, doesn't enter sleep mode.

I started having this issue a few weeks ago. The monitor no longer enters sleep mode for whatever reason after I turn off my devices connected to it (currently my PC via DVI and my PS4 via HDMI), it turns on and displays a box with "no source signal" and never goes to sleep. Before it displayed a box with "monitor going to sleep" for a few seconds and the panel turned off as the montor entered sleep mode. This is extremely annoying. How do I fix it? What's wrong with it? I already tried a factory reset.

Hello, try this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive & clear caches.)
If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.
If 10.7.0 or later...
Bootup holding CMD+r, or the Option/alt key to boot from the Restore partition & use Disk Utility from there to Repair the Disk, then Repair Permissions.

IMac enters sleep mode while playing Blizzard games

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