G5 iMac shutting itself down randomly

Posted:
in Genius Bar edited January 2014
My wife's G5 20" iMac, almost exactly a year old, has started shutting itself down randomly, sometimes in the middle of being used. I've updated the software and tried adjusting the sleep settings (it seems that it starts back up too quickly to really have been "shut down", although the sequence is the same as a regular restart), but have no idea if this is a hardware or software problem. Any ideas?

Comments

  • Reply 1 of 2
    Post the system logs. Go to GO>UTILITIES>CONSOLE. Click the logs button to open the log drawer, then click on system.log. Post the message you are getting when it shuts down.



    Also, when you say shutdown, so you mean actually go through an actual shutdown and it just loses power. If the latter, the system log won't show much, but it means it is a hardware problem.
  • Reply 2 of 2
    These are some of the logs for today: (if there's anything in there that I shouldn't be posting on line, please let me know!) I keep seeing a lot of "exited abnormally: Hangup":



    Aug 3 13:45:06 Macintosh ntpdate[153]: no servers can be used, exiting

    Aug 3 13:45:07 Macintosh lookupd[157]: lookupd (version 369.5) starting - Thu Aug 3 13:45:07 2006

    Aug 3 13:45:07 Macintosh kernel[0]: [IOAppleBluetoothHIDDriver][init] IOBluetoothHIDDriver 1.1.4

    Aug 3 13:45:07 Macintosh kernel[0]: [IOAppleBluetoothHIDDriver][free]

    Aug 3 13:45:07 Macintosh kernel[0]: [IOBluetoothHIDDriver][init] IOBluetoothHIDDriver 1.1.4

    Aug 3 13:45:07 Macintosh kernel[0]: [IOBluetoothHIDDriver][handleStart][00-11-09-ac-67-3a] Done.

    Aug 3 13:45:07 Macintosh configd[35]: target=enable-network: disabled

    Aug 3 13:45:08 Macintosh configd[35]: setting hostname to "macintosh.local"

    Aug 3 13:45:09 Macintosh ntpd_initres[164]: couldn't resolve `time.apple.com', giving up on it

    Aug 3 13:45:12 Macintosh kernel[0]: in_delmulti - ignorning invalid inm (0x656e00c0)

    Aug 3 13:45:12 Macintosh launchd: Server 0 in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[157]: exited abnormally: Hangup

    Aug 3 13:45:12 Macintosh configd[35]: posting notification com.apple.system.config.network_change

    Aug 3 13:45:12 Macintosh lookupd[196]: lookupd (version 369.5) starting - Thu Aug 3 13:45:12 2006

    Aug 3 13:45:27 Macintosh configd[35]: setting hostname to "Macintosh.local"

    Aug 3 16:03:43 localhost kernel[0]: standard timeslicing quantum is 10000 us

    Aug 3 16:03:43 localhost memberd[38]: memberd starting up

    Aug 3 16:03:43 localhost kernel[0]: vm_page_bootstrap: 252592 free pages

    Aug 3 16:03:43 localhost lookupd[43]: lookupd (version 369.5) starting - Thu Aug 3 16:03:43 2006

    Aug 3 16:03:43 localhost kernel[0]: mig_table_max_displ = 70

    Aug 3 16:03:43 localhost mDNSResponder-107.4 (May 4 2006 16: 34:29)[31]: starting

    Aug 3 16:03:43 localhost kernel[0]: 90 prelinked modules

    Aug 3 16:03:43 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993

    Aug 3 16:03:43 localhost kernel[0]: The Regents of the University of California. All rights reserved.

    Aug 3 16:03:43 localhost kernel[0]: using 2621 buffer headers and 2621 cluster IO buffer headers

    Aug 3 16:03:43 localhost kernel[0]: AppleKauaiATA shasta-ata features enabled

    Aug 3 16:03:43 localhost kernel[0]: DART enabled

    Aug 3 16:03:43 localhost kernel[0]: USB caused wake event (EHCI)

    Aug 3 16:03:43 localhost kernel[0]: FireWire (OHCI) Apple ID 52 built-in now active, GUID 001124ff feca5c18; max speed s400.

    Aug 3 16:03:43 localhost kernel[0]: CSRHIDTransitionDriver:robe:

    Aug 3 16:03:43 localhost kernel[0]: CSRHIDTransitionDriver::start before command

    Aug 3 16:03:43 localhost kernel[0]: Security auditing service present

    Aug 3 16:03:43 localhost kernel[0]: BSM auditing present

    Aug 3 16:03:43 localhost kernel[0]: disabled

    Aug 3 16:03:43 localhost kernel[0]: rooting via boot-uuid from /chosen: DC48825C-FC3D-3FD3-9C51-0FC7C10AD996

    Aug 3 16:03:43 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 3 16:03:43 localhost kernel[0]: Got boot device = IOService:/MacRISC4PE/[email protected],f2000000/AppleMacRiscHT/[email protected]/IOPCI2PCIBridge/[email protected]/AppleK2SATARoot/[email protected]/AppleK2SATA/[email protected]/IOATABlockStorageDriver/IOATABlockStorageDevice/IOBlockStorageDriver/Maxtor 6B250S0 Media/IOApplePartitionScheme/Untitled [email protected]

    Aug 3 16:03:43 localhost kernel[0]: BSD root: disk0s3, major 14, minor 2

    Aug 3 16:03:43 localhost kernel[0]: jnl: replay_journal: from: 3467264 to: 2265088 (joffset 0xa701000)

    Aug 3 16:03:43 localhost kernel[0]: AppleSMU -- shutdown cause = -122

    Aug 3 16:03:43 localhost kernel[0]: AppleSMU::PMU vers = 0x000d006b, SPU vers = 0x2b, SDB vers = 0x01,

    Aug 3 16:03:43 localhost kernel[0]: CSRHIDTransitionDriver::stop

    Aug 3 16:03:43 localhost kernel[0]: IOBluetoothHCIController::start Idle Timer Stopped

    Aug 3 16:03:43 localhost kernel[0]: Jettisoning kernel linker.

    Aug 3 16:03:43 localhost kernel[0]: Resetting IOCatalogue.

    Aug 3 16:03:43 localhost kernel[0]: Matching service count = 0

    Aug 3 16:03:43 localhost kernel[0]: Matching service count = 2

    Aug 3 16:03:43 localhost kernel[0]: Matching service count = 2

    Aug 3 16:03:43 localhost kernel[0]: Matching service count = 2

    Aug 3 16:03:43 localhost kernel[0]: Matching service count = 2

    Aug 3 16:03:43 localhost kernel[0]: Matching service count = 2

    Aug 3 16:03:43 localhost kernel[0]: IOHWMonitor - no Params Version !!

    Aug 3 16:03:43 localhost kernel[0]: SMU_Neo2_PlatformPlugin::initThermalProfile - entry

    Aug 3 16:03:43 localhost kernel[0]: SMU_Neo2_PlatformPlugin::initThermalProfile - calling adjust

    Aug 3 16:03:43 localhost kernel[0]: IPv6 packet filtering initialized, default to accept, logging disabled

    Aug 3 16:03:43 localhost DirectoryService[42]: Launched version 2.1 (v353.2)

    Aug 3 16:03:44 localhost kernel[0]: UniNEnet: Ethernet address 00:11:24:ca:5c:18

    Aug 3 16:03:44 localhost diskarbitrationd[37]: disk0s3 hfs DC48825C-FC3D-3FD3-9C51-0FC7C10AD996 Vizzini /

    Aug 3 16:03:44 localhost kernel[0]: AirPortPCI_MM: Ethernet address 00:11:24:bf:72:a8

    Aug 3 16:03:44 localhost launchd: Server 290b in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[43]: exited abnormally: Hangup

    Aug 3 16:03:44 localhost lookupd[60]: lookupd (version 369.5) starting - Thu Aug 3 16:03:44 2006

    Aug 3 16:03:45 localhost kernel[0]: [HCIController][setupHardware] AFH Is Supported

    Aug 3 16:03:47 localhost mDNSResponder: Adding browse domain local.

    Aug 3 16:03:47 localhost kernel[0]: ATY,Aphrodite_A: vram [98000000:08000000]

    Aug 3 16:03:47 localhost /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow: Login Window Application Started

    Aug 3 16:03:47 localhost kernel[0]: ATY,Aphrodite_B: vram [98000000:08000000]

    Aug 3 16:03:48 localhost loginwindow[64]: Login Window Started Security Agent

    Aug 3 16:03:53 Macintosh configd[35]: setting hostname to "Macintosh.local"

    Aug 3 16:03:55 Macintosh kernel[0]: AirPort: Link Active: "dlink" - 0015e9674094 - chan 6

    Aug 3 16:04:00 Macintosh launchd: Server 0 in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[60]: exited abnormally: Hangup

    Aug 3 16:04:00 Macintosh configd[35]: executing /System/Library/SystemConfiguration/Kicker.bundle/Contents/Resources/enable-network

    Aug 3 16:04:00 Macintosh configd[35]: posting notification com.apple.system.config.network_change

    Aug 3 16:04:00 Macintosh lookupd[140]: lookupd (version 369.5) starting - Thu Aug 3 16:04:00 2006

    Aug 3 16:04:00 Macintosh ntpdate[152]: getnetnum: "time.apple.com" invalid host number, line ignored

    Aug 3 16:04:00 Macintosh ntpdate[152]: no servers can be used, exiting

    Aug 3 16:04:00 Macintosh configd[35]: target=enable-network: disabled

    Aug 3 16:04:02 Macintosh ntpd_initres[161]: couldn't resolve `time.apple.com', giving up on it

    Aug 3 16:04:06 Macintosh kernel[0]: in_delmulti - ignorning invalid inm (0x656e00c0)

    Aug 3 16:04:06 Macintosh launchd: Server 0 in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[140]: exited abnormally: Hangup

    Aug 3 16:04:06 Macintosh lookupd[194]: lookupd (version 369.5) starting - Thu Aug 3 16:04:06 2006

    Aug 3 16:04:06 Macintosh configd[35]: posting notification com.apple.system.config.network_change

    Aug 3 16:04:06 Macintosh launchd: Server 404f in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[194]: exited abnormally: Hangup

    Aug 3 16:04:06 Macintosh lookupd[195]: lookupd (version 369.5) starting - Thu Aug 3 16:04:06 2006

    Aug 3 16:05:22 Macintosh kernel[0]: [IOAppleBluetoothHIDDriver][init] IOBluetoothHIDDriver 1.1.4

    Aug 3 16:05:22 Macintosh kernel[0]: [IOAppleBluetoothHIDDriver][free]

    Aug 3 16:05:22 Macintosh kernel[0]: [IOBluetoothHIDDriver][init] IOBluetoothHIDDriver 1.1.4

    Aug 3 16:05:22 Macintosh kernel[0]: [IOBluetoothHIDDriver][handleStart][00-11-09-ac-67-3a] Done.



    I talked to the guy at the Apple Store where I bought it, and he said it sounded like it might be a power supply problem. It's still under warranty and could be fixed for no charge, but they're backed up 2 weeks, and we'd be without a machine for my wife until then...so if it looks like it's a software problem or a glitch, that would save us some time.
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