4 Replies Latest reply: Oct 19, 2013 2:56 PM by BDAqua
MACnCHEESY Level 1 Level 1 (0 points)

My IMAC G5 will randomly go into sleep mode while I am in the middle of using it. Typically the fan noise increases and than it auto goes into a sleep mode. It also has issues starting. I have to press and hold the power button for it to kick on while also hitting keys on the keyboard to trigger it. Help!?


iMac, Mac OS X (10.5.8)
  • MACnCHEESY Level 1 Level 1 (0 points)

    Here is the system log it looks like its over heating?

     

    Sep 22 20:37:11 Macintosh-2 mDNSResponder[23]: mDNSPlatformSendUDP sendto failed to send packet on InterfaceID 00805E00   en0/6 to FF02:0000:0000:0000:0000:0000:0000:00FB:5353 skt 8 error -1 errno 50 (Network is down) 1852846483

    Sep 22 20:37:11 Macintosh-2 mDNSResponder[23]: mDNSPlatformSendUDP sendto failed to send packet on InterfaceID 00805E00   en0/6 to FF02:0000:0000:0000:0000:0000:0000:00FB:5353 skt 8 error -1 errno 50 (Network is down) 1852846774

    Sep 22 20:37:12: --- last message repeated 1 time ---

    Sep 22 20:37:12 Macintosh-2 mDNSResponder[23]: mDNSPlatformSendUDP sendto failed to send packet on InterfaceID 00805E00   en0/6 to FF02:0000:0000:0000:0000:0000:0000:00FB:5353 skt 8 error -1 errno 50 (Network is down) 1852847774

    Sep 22 20:37:13 Macintosh-2 kernel[0]: UniNEnet::monitorLinkStatus - Link is up at 100 Mbps - Full Duplex (PHY regs 5,6:0x45e1,0x0005)

    Sep 22 20:37:15 Macintosh-2 kernel[0]: IOSMUPwrController:: OverTemp notification

    Sep 22 20:37:15 Macintosh-2 kernel[0]: PowerManagement emergency overtemp signal. Going to sleep!IOPMSlotsMacRISC4::determineSleepSupport has canSleep true

    Sep 22 20:37:15 Macintosh-2 mDNSResponder[23]: Note: Frequent transitions for interface en0 (70.162.10.190); network traffic reduction measures in effect

    Sep 22 20:37:21 ip70-162-10-190 configd[35]: setting hostname to "ip70-162-10-190.ph.ph.cox.net"

    Sep 22 20:37:24 ip70-162-10-190 kernel[0]: System Sleep

    Sep 22 20:37:24 ip70-162-10-190 kernel[0]: System Wake

    Sep 22 20:37:24 Macintosh-2 kernel[0]: Wake event 0020

    Sep 22 20:37:24 Macintosh-2 configd[35]: setting hostname to "Macintosh-2.local"

    Sep 22 20:37:24 Macintosh-2 mDNSResponder[23]: Note: Frequent transitions for interface en0 (FE80:0000:0000:0000:0214:51FF:FE97:7AA2); network traffic reduction measures in effect

    Sep 22 20:37:24 Macintosh-2 mDNSResponder[23]: mDNSPlatformSendUDP sendto failed to send packet on InterfaceID 00805E00   en0/6 to FF02:0000:0000:0000:0000:0000:0000:00FB:5353 skt 8 error -1 errno 50 (Network is down) 1852859586

    Sep 22 20:37:29 Macintosh-2 kernel[0]: USB (EHCI):Port 1 on bus 0x4b has remote wakeup from some device

    Sep 22 20:37:29 Macintosh-2 mDNSResponder[23]: mDNSPlatformSendUDP sendto failed to send packet on InterfaceID 00805E00   en0/6 to FF02:0000:0000:0000:0000:0000:0000:00FB:5353 skt 8 error -1 errno 50 (Network is down) 1852860588

    Sep 22 20:37:31 Macintosh-2 kernel[0]: UniNEnet::monitorLinkStatus - Link is up at 100 Mbps - Full Duplex (PHY regs 5,6:0x45e1,0x0005)

    Sep 22 20:37:32 Macintosh-2 mDNSResponder[23]: Note: Frequent transitions for interface en0 (70.162.10.190); network traffic reduction measures in effect

  • BDAqua Level 10 Level 10 (120,080 points)

    Hello, have you blown the dustout 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/

     

    And/or iStat Pro...

     

    http://www.islayer.com/apps/istatpro/

     

    If you have any temps in the 70°C/160°F range, that's likely it.

  • heybamaban Level 1 Level 1 (0 points)

    I found that the vent was caked with dust.  As soon as I cleaned it out, this problem stopped happening.  It seems like it's a protection against overheating.

  • BDAqua Level 10 Level 10 (120,080 points)

    Great work, thanks for the report, yes, it's there for protection.