3 Z's then Imac goes to sleep

I have recently had a problem that is extremely annoying. I happens even if I am using the mac at the time. What happens is that all of a sudden there are 3 Z's that appear in the centre of the screen then my Imac goes to sleep. This has been happening for about 4 days.
Does anyone have any idea about what is going on?

It may be an Apple Remote putting the iMac to sleep. Someone may be playing a trick on you. See this thread about someone else with the same issue:
http://discussions.apple.com/thread.jspa?messageID=11194586&#11194586
Regards.

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My iMac goes into sleep mode, won't come out until I unplug and replug the computer then hit the power button. Just hitting the power button alone won't restart the iMac.

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Imac goes to sleep when downloading and errors occur

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Thanks

Applications > System Preferences > Energy Saver
set computer sleep to never
set display sleep to never
uncheck put hard disks to sleep when possible.
or use Caffeine: Lighthead - Caffeine

ATV looses connection because iMac goes to sleep.

Everything connects fine and I can stream a movie or music for about 30-40 minutes then it all stops when the iMac goes to sleep. The Mac energy save options have the 'wake for network access' box checked, but it still goes to sleep. What am i doing wrong?
Setup: iMac-Airport Extreme - ATV3

You've reset the SMC, how about the PRAM?
https://discussions.apple.com/docs/DOC-3603

IMac goes to sleep; won't wake up

After burning my first DVD I noticed the iMac goes to sleep, the light pulsating for a few moments then it disappears (screen is still dark) and it will not wake by touching keyboard or moving the mouse. (I had to unplug it and hit start-up button to get iMac back up & running).
It seems to run fine except for this sleep issue. I can re-awake it at the stage where the screen saver is still on; after that it's in a coma. I have deleted the com.apple.systemuiserver.plist file (suggested by Dale in another post).
I know I can set the computer to "Never" go to sleep but is that a viable option? And, may this sleep problem be a symptom showing some problem exists w/ the power supply or the logic board as I've seen described in other posts. i.e. Should I be calling in the Apple Care people to diagnose my comatose Mac?

I called Apple Care; the tech ran through a process involving unplugging all peripherals, etc etc; the end result being that my iMac is diagnosed w/ a power supply issue. It will qualify to be repaired under the iMac G5 Repair Extension Plan, free of charge. (My iMac also needed a logic board to be replaced 6 months after purchase in Jan. 2005.) My advice: don't purchase the "first generation" of a product line; too often the kinks haven't yet been worked out. If you must make such a purchase, buy the extended warranty (the ProCare plan) and protect your investment.

I have a year old iMac and Macbook, both on 10.7.3. Every time the iMac goes to sleep I lose wi-fi. No problem with the Macbook and iPad. A lot of people seem to have the same problem. What's the solution?

I have a year-old iMac and Macbook, both on 10.7.3. Every time the iMac goes to sleep I lose wi-fi from Airport Express. No problem with the Macbook or my iPad. It seems a lot Mac users are having the same problem. Is there a solution? Does Apple have a solution?

Sometimes there are problems.
Somethings to try but probably won't help....
1. Repair Disk Permissions
2. Startup in Safe mode by holding down the "Shift" key....
3. Reset the P Ram by holding down the "Command/Option/P/R" keys at the same time...
The above are standard items to do on any Mac from time to time.
I repair permissions at least once a month....
The other 2 periodically as they do straighten things out when they get out of whack....
Thanks for the feedback.

IMac goes to sleep/hibernate multiple times per day after installing Maverick OS. I have to shutdown and power back on.

iMac goes to sleep/hibernate multiple times per day after installing Maverick OS. Moving the mouse or hitting the spcaebar will not wake the pc.
I have to shutdown and power back on. My iMac was purchased in January 2011 and no longer in warrenty. The energy saver 'sleep' and 'display' settings are set at 10 minutes. When I changed to 'never' the machine got very hot and I changed the settings back. I have checks by: Put hard disk to sleep when possible and wake for network access. Any help would be greatly appreciated.

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, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login 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, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

My Macbook starts up, shows the screen saver, then immediately goes to sleep. I tap the spacebar, it comes back for a second, shows the tool bar and the hard drive icon then immediately "goes to sleep". This can go on forever, on, sleep, on, sleep.

My Macbook starts up, shows the screen saver, then immediately goes to sleep. I tap the spacebar, it comes back for a second, shows the tool bar and the hard drive icon then immediately "goes to sleep". This can go on forever, on, sleep, on, sleep. I can only see the screen for maybe 3-5 seconds; not enough time to do anything. Someone did step on it, so I don't know if the problem is with screen or ??
Thanks!

Hello, Juniorjr2.
Thank you for visiting Apple Support Communities.
This sounds like screen curtain may be enabled. Screen curtain is a feature that allows display privacy. To disable screen curtain while VoiceOver is enabled, you can three finger triple tap the screen to disable this feature. You may need to press the home button once in order to process these steps. If you wish to disable VoiceOver, see the link in the article below.
iOS: Configuring accessibility features
http://support.apple.com/kb/HT5018
If the issue persists, try reaching out to us here.
Cheers,
Jason H.

Blue screen crash/freeze immediately after Intel iMac goes to sleep

Howdy all,
I have a new Intel 24" iMac, less than 3 days out of the box. Almost every time the computer goes to sleep (except twice so far when I first started using the machine) the screen goes dark for a few seconds, then turns light blue and freezes. Neither mouse movement or keyboard input will wake it up, and I have to do a hard reboot. This happens if I put the computer to sleep or just let it happen per the Energy Saver timed settings. Hardware test shows no errors. Screen saver has been disabled. All other settings and software was imported using the setup assistant from my previous iMag G5 running OX 10.3. Tried contacting automated Apple support (newly-reduced live tech support hours are NOT an improvement) and have come up empty. Any suggestions?
Thanks in advance...

Howdy all,
I have a new Intel 24" iMac, less than 3 days out of the box. Almost every time the computer goes to sleep (except twice so far when I first started using the machine) the screen goes dark for a few seconds, then turns light blue and freezes. Neither mouse movement or keyboard input will wake it up, and I have to do a hard reboot. This happens if I put the computer to sleep or just let it happen per the Energy Saver timed settings. Hardware test shows no errors. Screen saver has been disabled. All other settings and software was imported using the setup assistant from my previous iMag G5 running OX 10.3. Tried contacting automated Apple support (newly-reduced live tech support hours are NOT an improvement) and have come up empty. Any suggestions?
Thanks in advance...

IMac goes to sleep unexpectedly, Finder issues with flash drives - related?

My iMac falls asleep for no known reason, often in the middle of active use. (Similar problem recently described in thread with messageID=11829917.)
Sleep onset is frequent but seems to vary based on both currently-running software and attached devices (particularly USB flash drives). It will almost always wake up when I hit the space bar afterward, but might sleep again within a minute or two, then not for an hour or more. The sleep occurs with little notice (brief stall of display, sometimes enough time to click on another app window and bring that forward before the screen goes dark), and 95% of the time the computer wakes up after hitting the spacebar. The other 5 % of the time the display reappears but the entire OS is frozen and usually requires unplugging the power cable. There are other symptoms in the Finder - more below. Once in a while the fan revs up like a WWII fighter plane taking off from a carrier, but this is unusual and all the really irritating stuff also happens without this symptom, which usually stops on its own. Immediately after reawakening error messages are displayed to report that flash drives were improperly disconnected (Tell me about it! This has been the case for several months whether the computer goes to sleep by itself or if I put it there manually.)
The computer seems to go into sleep mode most frequently when not-particularly-demanding graphics (Photoshop Elements and Adobe Reader) and video (QuickTime Pro 7.6.4) apps are running. Turning these off makes nod-offs less frequent but doesn't stop it entirely. When video thumbnails are displayed in Finder windows a lot of time may be required to load the data and this often paralyzes everything else AND this also seems to be a trigger for a nod-off (i.e. QuickTime not necessary to make the computer choke). This is highly variable and some video clips load quickly (< 20 sec), while others take several minutes, and this doesn't necessarily correlate with file size.
Another factor is whether flash drives are connected - these seem to make the nod-offs more frequent AND Finder regularly loses communication to these both while just sitting there and also in the middle of file transfers. A very early 250 MB drive (Lexar - vintage 2004) will always communicate, but different USB2-capable drives all are either unreliable (Lexar 8 GB and KData 4 GB both < 1 yr old) or apparently dead (Lexar 2 GB ~ 2 yr old). The failures may be damaging the drives - they are inconsistent-to-bad at communicating with my MacBook Pro. I know this sounds like the drives are at fault, but there are things which make me suspect the OS (both computers use the same version): 1) different flash drives display the same on-again-off-again behavior AND the 2) the 2 GB drive that hasn't communicated with my Macs in over a month has no trouble talking with my wife's WinXP computer. When communication isn't working with these drives, they do not show up in either Finder or Disk Utility. When the Mac-dead 2 GB Lexar is plugged into either computer and I launch Disk Utility, the initial scan for drives never finishes so I have to force quit. (When they are working, on the iMac the large drives only appear in Finder if I go to User and press Command-uparrow (to go up a directory layer) - in columns display mode nothing appears in the left-hand column.
(The following describes a set of problems I've had a little longer and which may or may not be related):
At times the Finder loses some but not all functions:
1) Sometimes files in the Trash can't be ejected* even when all apps are turned off
2) usually when problem 1) is observed, no keyboard commands work: nothing happens when pressing Command-W, Command-uparrow or Command-N to open a new window. Text typed will not be entered to change filenames (but this can still be done by typing the desired text in TextEdit, copying there and selecting and pasting with mouse commands.)
<* I have downloaded an app for forcing file deletion, but haven't really needed it - the delete option and keyboard commands all return after shutdown and reboot, and there's usually enough annoying stuff going on by this time that that seems the best thing to do.>
Things which I've tried to fix it with so far (not in this order):
- blowing dust out of the back with canned air
- checking temperatures - CPU/GPU showing 72/73, HD bay 51, etc.
- fixing permissions from normal boot
- boot from install disk and running extended hardware test (no problems found during scans repeated several times during the past month)
- fixing permissions and running Disk First Aid from install disk boot
- getting files off the hard drive (was as low as 3 GB free space, currently ~ 35 GB and climbing)
- clearing PRAM
- resetting system manager (name? - hold down power button when reconnecting power cable, etc.)
- Power Saver display and computer auto sleep are shut off (both on "never" - I regularly put it to sleep manually)
- virus scans (Clam XAV)
I realize that this is a kitchen sink collection of symptoms, but these things may be related and if so, OS developers may want to be sure these problems are avoided in current versions. (Yes I will upgrade my OS soon...)

Thanks for checking in, Miriam - sorry to get testy about it.
The iMac's RAM is maxed out (2.5 GB)
Yes, the system log does report overtemp message to Power management prior to shutdown (today's log at end of post)
Where do I find normal temperatures for the system? What are the important parameters to watch and what sort of fixes are possible?
iStat currently shows:
HD 54° CPU 67° GPU 72° Incoming air 38° (???)
HD bay 54° GPU ambient 71° opt drive 49°
==========================================
Console.log was largely full of stuff about a bad flash drive I stuck in as a Hail Mary and failure of communication with a scanner (old HP, driver package installs a program which starts at launch which doesn't show up under Startup Items. Apparently the permission got mislaid, so I fixed permissions and this seems OK now. (Only included that because some of it shows up in System.log and it's not worth focusing on.)
[That all said, there is a software/OS component to the problem and it is graphics-related. The other night I was looking at some flash videos in a series and one in particular repeatedly caused shutdown, while others played normally: domain = jebhost.com /youtube/list.php?q=Henry+8.o&Submit=GO "The Tricycle Thief" only played through once out of about six tries.]
=========================================
System Log Aug 1 (last addition 20 minutes ago)
Aug 1 14:52:46 gerda-kilgores-imac-g5 cp: error processing extended attributes: Operation not permitted
Aug 1 17:07:42 gerda-kilgores-imac-g5 cp: error processing extended attributes: Operation not permitted
Aug 1 17:23:51 gerda-kilgores-imac-g5 kernel[0]: comlexar_driverLexarFilterScheme[0x2b6e3000]::init(0x46c34c0)
Aug 1 17:23:51 gerda-kilgores-imac-g5 kernel[0]: comlexar_driverLexarFilterScheme[0x2b6e3000]::free()
Aug 1 17:24:07 gerda-kilgores-imac-g5 kernel[0]: comlexar_driverLexarFilterScheme[0x2b6e3000]::init(0x3827ec0)
Aug 1 17:24:07 gerda-kilgores-imac-g5 kernel[0]: comlexar_driverLexarFilterScheme[0x2b6e3000]::free()
Aug 1 17:38:33 gerda-kilgores-imac-g5 kernel[0]: disk1s1: I/O error.
Aug 1 17:38:33 gerda-kilgores-imac-g5 diskarbitrationd[40]: unable to repair /dev/disk1s1 (status code 0x00000008).
Aug 1 17:38:41 gerda-kilgores-imac-g5 kernel[0]: USBF: 31965.839 AppleUSBEHCI[0x360e800]::Found a transaction which hasn't moved in 5 seconds on bus 75, timing out!
Aug 1 17:38:42 gerda-kilgores-imac-g5 kernel[0]: USBF: 31966.868 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing getting port status (4)
Aug 1 17:38:42 gerda-kilgores-imac-g5 kernel[0]: USBF: 31966.901 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing clearing port feature
Aug 1 17:38:42 gerda-kilgores-imac-g5 kernel[0]: USBF: 31967. 23 ControlTransaction: control packet 1 error 0xe0004057
Aug 1 17:38:49 gerda-kilgores-imac-g5 kernel[0]: USBF: 31973.868 AppleUSBEHCI[0x360e800]::Found a transaction which hasn't moved in 5 seconds on bus 75, timing out!
Aug 1 17:38:53 gerda-kilgores-imac-g5 kernel[0]: USBF: 31977.938 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing getting port status (4)
Aug 1 17:38:53 gerda-kilgores-imac-g5 kernel[0]: USBF: 31978. 2 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing clearing port feature
Aug 1 17:38:56 gerda-kilgores-imac-g5 kernel[0]: USBF: 31981.506 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing getting port status (4)
Aug 1 17:38:56 gerda-kilgores-imac-g5 kernel[0]: USBF: 31981.571 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing clearing port feature
Aug 1 17:38:59 gerda-kilgores-imac-g5 kernel[0]: USBF: 31984.264 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing getting port status (4)
Aug 1 17:38:59 gerda-kilgores-imac-g5 kernel[0]: USBF: 31984.329 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing clearing port feature
Aug 1 17:39:01 gerda-kilgores-imac-g5 kernel[0]: USBF: 31986. 31 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing getting port status (4)
Aug 1 17:39:01 gerda-kilgores-imac-g5 kernel[0]: USBF: 31986. 64 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing clearing port feature
Aug 1 17:39:01 gerda-kilgores-imac-g5 kernel[0]: USBF: 31986.187 ControlTransaction: control packet 1 error 0xe0004057
Aug 1 17:39:02 gerda-kilgores-imac-g5 kernel[0]: USBF: 31987.712 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing getting port status (4)
Aug 1 17:39:02 gerda-kilgores-imac-g5 kernel[0]: USBF: 31987.774 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing clearing port feature
Aug 1 17:39:03 gerda-kilgores-imac-g5 kernel[0]: USBF: 31988.139 IOUSBCompositeDriver[0x46bea00](HP Scanjet 5400C Series) GetFullConfigDescriptor(0) returned NULL
Aug 1 17:39:04 gerda-kilgores-imac-g5 kernel[0]: USBF: 31989. 55 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing getting port status (4)
Aug 1 17:39:04 gerda-kilgores-imac-g5 kernel[0]: USBF: 31989.178 AppleUSBHubPort: Port 2 of Hub at 0x4b240000 reported error 0xe00002ed while doing clearing port feature
Aug 1 17:39:04 gerda-kilgores-imac-g5 kernel[0]: USBF: 31989.204 ControlTransaction: control packet 1 error 0xe0004057
Aug 1 17:39:04 gerda-kilgores-imac-g5 kernel[0]: USBF: 31989.479 IOUSBCompositeDriver[0x46bec00](HP Scanjet 5400C Series) GetFullConfigDescriptor(0) returned NULL
Aug 1 17:39:05 gerda-kilgores-imac-g5 kernel[0]: USBF: 31990.455 ControlTransaction: control packet 1 error 0xe0004057
Aug 1 17:39:05 gerda-kilgores-imac-g5 kernel[0]: USBF: 31990.503 IOUSBCompositeDriver[0x36cb380](HP Scanjet 5400C Series) GetFullConfigDescriptor(0) returned NULL
Aug 1 17:49:08 localhost kernel[0]: standard timeslicing quantum is 10000 us
Aug 1 17:49:08 localhost lookupd[43]: lookupd (version 369.8) starting - Sun Aug 1 17:49:08 2010
Aug 1 17:49:08 localhost kernel[0]: vmpagebootstrap: 633665 free pages
Aug 1 17:49:08 localhost memberd[41]: memberd starting up
Aug 1 17:49:08 localhost kernel[0]: migtable_maxdispl = 70
Aug 1 17:49:08 localhost kernel[0]: 92 prelinked modules
Aug 1 17:49:08 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
Aug 1 17:49:08 localhost kernel[0]: The Regents of the University of California. All rights reserved.
Aug 1 17:49:08 localhost kernel[0]: using 6553 buffer headers and 4096 cluster IO buffer headers
Aug 1 17:49:08 localhost kernel[0]: AppleKauaiATA shasta-ata features enabled
Aug 1 17:49:08 localhost kernel[0]: DART enabled
Aug 1 17:49:08 localhost kernel[0]: USB caused wake event (EHCI)
Aug 1 17:49:08 localhost kernel[0]: FireWire (OHCI) Apple ID 52 built-in now active, GUID 001451ff fe261dcc; max speed s400.
Aug 1 17:49:08 localhost kernel[0]: CSRHIDTransitionDriver::probe:
Aug 1 17:49:08 localhost kernel[0]: CSRHIDTransitionDriver::start before command
Aug 1 17:49:08 localhost kernel[0]: Security auditing service present
Aug 1 17:49:08 localhost kernel[0]: BSM auditing present
Aug 1 17:49:08 localhost kernel[0]: disabled
Aug 1 17:49:08 localhost kernel[0]: rooting via boot-uuid from /chosen: D5C0BAB6-ADB2-3A2A-9DDD-6F971A163F6B
Aug 1 17:49:08 localhost kernel[0]: Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
Aug 1 17:49:08 localhost kernel[0]: Got boot device = IOService:/MacRISC4PE/ht@0,f2000000/AppleMacRiscHT/pci@3/IOPCI2PCIBridge/k2-sat a-root@C/AppleK2SATARoot/k2-sata@0/AppleK2SATA/ATADeviceNub@0/IOATABlockStorageD river/IOATABlockStorageDevice/IOBlockStorageDriver/WDC WD2500JS-40MVB1 Media/IOApplePartitionScheme/Untitled 3@3
Aug 1 17:49:08 localhost kernel[0]: BSD root: disk0s3, major 14, minor 2
Aug 1 17:49:08 localhost kernel[0]: jnl: replay_journal: from: 2051072 to: 8100352 (joffset 0xa701000)
Aug 1 17:49:08 localhost kernel[0]: CSRHIDTransitionDriver::stop
Aug 1 17:49:08 localhost kernel[0]: AppleSMU -- shutdown cause = 3
Aug 1 17:49:08 localhost kernel[0]: AppleSMU::PMU vers = 0x000d0092, SPU vers = 0x56, SDB vers = 0x01,
Aug 1 17:49:08 localhost kernel[0]: IOBluetoothHCIController::start Idle Timer Stopped
Aug 1 17:49:08 localhost kernel[0]: HFS: Removed 2 orphaned unlinked files
Aug 1 17:49:08 localhost kernel[0]: Jettisoning kernel linker.
Aug 1 17:49:08 localhost kernel[0]: Resetting IOCatalogue.
Aug 1 17:49:08 localhost kernel[0]: Matching service count = 0
Aug 1 17:49:08 localhost kernel[0]: Matching service count = 2
Aug 1 17:49:08 localhost kernel[0]: Matching service count = 2
Aug 1 17:49:08 localhost kernel[0]: Matching service count = 2
Aug 1 17:49:08 localhost kernel[0]: Matching service count = 2
Aug 1 17:49:08 localhost mDNSResponder-108.6 (Jul 19 2007 11: 33:32)[33]: starting
Aug 1 17:49:08 localhost kernel[0]: Matching service count = 2
Aug 1 17:49:08 localhost kernel[0]: SMUNeo2PlatformPlugin::initThermalProfile - entry
Aug 1 17:49:08 localhost kernel[0]: SMUNeo2PlatformPlugin::initThermalProfile - calling adjust
Aug 1 17:49:08 localhost kernel[0]: IPv6 packet filtering initialized, default to accept, logging disabled
Aug 1 17:49:08 localhost DirectoryService[46]: Launched version 2.1 (v353.6)
Aug 1 17:49:09 localhost kernel[0]: UniNEnet: Ethernet address 00:14:51:26:1d:cc
Aug 1 17:49:09 localhost diskarbitrationd[40]: disk0s3 hfs D5C0BAB6-ADB2-3A2A-9DDD-6F971A163F6B HiMac /
Aug 1 17:49:09 localhost kernel[0]: AirPortPCI_MM: Ethernet address 00:14:51:7e:85:c0
Aug 1 17:49:09 localhost launchd: Server 3507 in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[43]: exited abnormally: Hangup
Aug 1 17:49:10 localhost usbmuxd[36]: usbmuxd-196 built for iTunesNineTwo on May 17 2010 at 13:53:51, running 32 bit
Aug 1 17:49:10 localhost lookupd[63]: lookupd (version 369.8) starting - Sun Aug 1 17:49:10 2010
Aug 1 17:49:10 localhost configd[38]: WirelessConfigure: 88001003
Aug 1 17:49:10 localhost configd[38]: initCardWithStoredPrefs failed.
Aug 1 17:49:10 localhost configd[38]: WirelessConfigure: 88001003
Aug 1 17:49:11 localhost kernel[0]: Registering For 802.11 Events
Aug 1 17:49:11 localhost kernel[0]: [HCIController][setupHardware] AFH Is Supported
Aug 1 17:49:12 localhost mDNSResponder: Adding browse domain local.
Aug 1 17:49:13 localhost kernel[0]: ATY,Aphrodite2_A: vram [98000000:08000000]
Aug 1 17:49:13 localhost kernel[0]: ATY,Aphrodite2_B: vram [98000000:08000000]
Aug 1 17:49:13 localhost /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow: Login Window Application Started
Aug 1 17:49:14 localhost loginwindow[67]: Login Window Started Security Agent
Aug 1 17:49:18 gerda-kilgores-imac-g5 configd[38]: setting hostname to "gerda-kilgores-imac-g5.local"
Aug 1 17:49:20 gerda-kilgores-imac-g5 kernel[0]: AirPort: Link Active: "U2M67" - 001801fb71c5 - chan 11
Aug 1 17:49:20 gerda-kilgores-imac-g5 configd[38]: AppleTalk startup
Aug 1 17:49:23 gerda-kilgores-imac-g5 configd[38]: executing /System/Library/SystemConfiguration/Kicker.bundle/Contents/Resources/enable-net work
Aug 1 17:49:23 gerda-kilgores-imac-g5 configd[38]: posting notification com.apple.system.config.network_change
Aug 1 17:49:23 gerda-kilgores-imac-g5 launchd: Server 0 in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[63]: exited abnormally: Hangup
Aug 1 17:49:23 gerda-kilgores-imac-g5 lookupd[119]: lookupd (version 369.8) starting - Sun Aug 1 17:49:23 2010
Aug 1 17:49:23 gerda-kilgores-imac-g5 configd[38]: setting hostname to "new-host.home"
Aug 1 17:49:26 gerda-kilgores-imac-g5 configd[38]: target=enable-network: disabled
Aug 1 17:49:27 gerda-kilgores-imac-g5 configd[38]: AppleTalk startup complete
Aug 1 17:49:29 gerda-kilgores-imac-g5 mDNSResponder: NOTE: Wide-Area Service Discovery disabled to avoid crashing defective DNS relay 192.168.1.1.
Aug 1 18:18:49 gerda-kilgores-imac-g5 kernel[0]: comlexar_driverLexarFilterScheme[0x2b609000]::init(0x3587f00)
Aug 1 18:18:49 gerda-kilgores-imac-g5 kernel[0]: comlexar_driverLexarFilterScheme[0x2b609000]::free()
Aug 1 18:28:19 gerda-kilgores-imac-g5 kernel[0]: IOSMUPwrController:: OverTemp notification
Aug 1 18:28:19 gerda-kilgores-imac-g5 kernel[0]: Power Management received emergency overtemp signal. Going to sleep.
Aug 1 18:28:21 gerda-kilgores-imac-g5 kernel[0]: AirPort: Link DOWN (Client disAssoc 0)
Aug 1 18:28:21 gerda-kilgores-imac-g5 launchd: Server 0 in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[119]: exited abnormally: Hangup
Aug 1 18:28:21 gerda-kilgores-imac-g5 configd[38]: posting notification com.apple.system.config.network_change
Aug 1 18:28:21 gerda-kilgores-imac-g5 configd[38]: setting hostname to "gerda-kilgores-imac-g5.local"
Aug 1 18:28:21 gerda-kilgores-imac-g5 configd[38]: AppleTalk shutdown
Aug 1 18:28:21 gerda-kilgores-imac-g5 configd[38]: AppleTalk shutdown complete
Aug 1 18:28:21 gerda-kilgores-imac-g5 /usr/sbin/AppleFileServer: AFPServer::AbnormalATListenerShutDown - clear listener
Aug 1 18:28:21 gerda-kilgores-imac-g5 lookupd[240]: lookupd (version 369.8) starting - Sun Aug 1 18:28:21 2010
Aug 1 18:28:25 gerda-kilgores-imac-g5 kernel[0]: System Sleep
Aug 1 18:28:25 gerda-kilgores-imac-g5 kernel[0]: IOBluetoothHCIController::restartShutdownWL this is a wake from sleep
Aug 1 18:28:25 gerda-kilgores-imac-g5 kernel[0]: System Wake
Aug 1 18:28:25 gerda-kilgores-imac-g5 kernel[0]: Wake event 0020
Aug 1 18:28:25 gerda-kilgores-imac-g5 kernel[0]: USB caused wake event (EHCI)
Aug 1 18:28:26 gerda-kilgores-imac-g5 kernel[0]: FireWire (OHCI) Apple ID 52 built-in: handleSelfIDInt - received quads == 0. issuing bus reset
Aug 1 18:28:32 gerda-kilgores-imac-g5 kernel[0]: AirPort: Link Active: "U2M67" - 001801fb71c5 - chan 11
Aug 1 18:28:32 gerda-kilgores-imac-g5 configd[38]: AppleTalk startup
Aug 1 18:28:35 gerda-kilgores-imac-g5 launchd: Server 0 in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[240]: exited abnormally: Hangup
Aug 1 18:28:35 gerda-kilgores-imac-g5 configd[38]: posting notification com.apple.system.config.network_change
Aug 1 18:28:35 gerda-kilgores-imac-g5 lookupd[249]: lookupd (version 369.8) starting - Sun Aug 1 18:28:35 2010
Aug 1 18:28:36 gerda-kilgores-imac-g5 configd[38]: setting hostname to "new-host.home"
Aug 1 18:28:37 gerda-kilgores-imac-g5 mDNSResponder: Repeated transitions for interface en1 (192.168.1.2); delaying packets by 5 seconds
Aug 1 18:28:38 gerda-kilgores-imac-g5 configd[38]: AppleTalk startup complete
Aug 1 18:28:41 gerda-kilgores-imac-g5 mDNSResponder: NOTE: Wide-Area Service Discovery disabled to avoid crashing defective DNS relay 192.168.1.1.

IMac goes to sleep running Civilization 3 game

I recently had my mac serviced by Apple under the extended warranty program (for display/power supply recall). Since then, when I play Civ 3 for about 20-30 minutes, it goes to sleep. After a while I can resume (wake up) as normal and everthing is fine.
I reset PRAM, and reset the SMU. No difference. I poked around the system files and found this entry in the system log:
Feb 1 21:34:32 localhost mDNSResponder[204]: mDNSResponder Sleeping at 18464260
Feb 1 21:34:34 localhost kernel: AppleNMI mask NMI
Feb 1 21:35:37 localhost kernel: Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
Feb 1 21:35:37 localhost kernel: SMUNeo2PlatformPlugin core dump:
Feb 1 21:35:37 localhost kernel: IOHWControls:
Apparently, the disk fan is not working correctly and overheats. The CPU fan works fine (the vents are all clean), and this worked before I had Apple do the repair (they replaced the logic board). I would be very disappointed if I was given a defective logic board but that looks like what has happened.
I know I should return to Apple for repair, but maybe someone knows something I can do instead. It's a real pain to shuttle between Apple store and home.

Hello Mike:
Welcome to Apple discussions.
This forum is for older G4 iMac owners (I have one of those too).
Your poking around detected a hardware problem. I suggest you take the computer back to Apple (with the log) and have them fix it under the warranty you mentioned.
Barry

HELP: My G5 iMac goes to sleep frequently

After startup, my iMac works pretty well, but after a little use it goes to sleep frequently. After I touch the mouse or a key on the keyboard, it spins back up but falls asleep again sometimes before I can finish a word. Videos in a place like YouTube are out of the question.
In Energy Saver, I have "Computer Sleep," and "Display sleep" set to > NEVER. Also "Put the hard disk(s) to sleep when possible" is NOT CHECKED, and "Better battery life" is selected.
Two years ago, I had a new power supply installed. I am only using a third of the hard drive's capacity.
Does anyone know what could be causing this behavior? Would a "clean install" fix this?
Thanks!

Try resetting the SMU and run Disk Utility to check out your drive.
1. Insert the Mac OS X Install disc that came with your computer, 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. (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. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
5. Select your Mac OS X volume.
6. Click Repair. Disk Utility checks and repairs the disk.

IMac goes to sleep after start up

Hi,
I've got a 2011, 21.5" iMac. I've had a few screen problems with it, and it's had two replacements now.
The first problem was a screen burn, or some cloudy patch behind the screen, so I got the screen replaced at the Apple Store under the warranty. The new screen worked fine for about a week, then wouldn't turn on, so I took it back, and they replaced the screen again, as well as the baclight board. This seems to have (for now) solved the problem. It's been about a week since I got my iMac back, and it's screen is now going to sleep when it starts up. So, it boots up, with the Apple logo, then the screen shuts off and it goes to sleep. I have to press the power button to get it back on. I've also noticed this only happens when I boot it up at the start of the day, so if I were to restart it now, it won't do it.
I've tried resetting the PRAM and stuff, but it's not made a difference... Does anyone know what the problem could be, or has anyone had this issue?
Thanks

Hi Sam,
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
Reboot, test again.

IMac going to sleep while I'm working on it

I will be working on my Imac, final Cut or Imovie or just simply surfing the internet and the screen will go blank. I move the mouse or a key and the computer comes back the way it was why is it going to sleep on its own?

You are describing the screen going dark while you are working. And you say that moving the mouse brings it back. That sounds like display sleep. Just moving the mouse wouldn't wake up the computer if it had entered sleep. You would need to click it or press a key.
>I have the engery Saver set to 15 min.
Which one is set to 15 min? There are two "sleep" functions, computer sleep and display sleep. Fifteen minutes is much too short for computer sleep and much too long for display sleep.

24" imac goes into sleep mode and lights on circuit flicker

Hi -
I have a 24" imac and have found that when the display goes into sleep mode the lights on the circuit flicker.
I have searched the web and other users have complained of the same issue with no resolution.
Here is a similiar post - https://discussions.apple.com/thread/2606099?start=0&tstart=0.      The resolution is probably you need to get the iMac serviced, what i'm wondering is what is the problem in the imac that is causing the issue.    Is this a defect?
Before anyone questions the circuitry in my house here is what I have verified.
An electrician has come and verified the electric panel is good and all circuit breakers are good.   All circuits in my house are copper, no aluminum.
I can plug the iMac into any circuit and the problem starts right when the Imac's display goes to sleep.     I have owned the iMac for approximately 5 months now (bought it used) and the problem started about a month ago.
Assuming this has to be serviced I dread to wonder the price .
Thanks for anyones help.

The sleep timeout has nothing to do with disk activity. It's based on user input, although some background processes can pre-empt it. If you don't want the machine to sleep automatically, disable automatic sleep in the Energy Saver preference pane.

3 Z's then Imac goes to sleep

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