Unexpected repeated ibook crashes

Discussion in 'PowerPC Macs' started by Jason_Bryan, Jun 20, 2008.

  1. macrumors regular

    Apr 27, 2003
    Sheffield, UK
    My iBook g4 has started to producing a grayed out screen and a message saying I need to hold down the power button to restart. I have all my documents backed up so the first thing I did was a clean install of Leopard. That has not stopped the problem. I have copied the info from the log the computer would like to send to Apple. Can anyone tell me what it means?

    Fri Jun 20 11:54:02 2008
    panic(cpu 0 caller 0x000AED04): "Uncorrectable machine check: pc = 0000000000BE2918, msr = 0000000000149030, dsisr = 42000000, dar = 000000001F3B8000\n" " AsyncSrc = 0000000000000000, CoreFIR = 0000000000000000\n" " L2FIR = 0000000000000000, BusFir = 0000000000000000\n"@/SourceCache/xnu/xnu-1228.5.18/osfmk/ppc/trap.c:975
    Latest stack backtrace for cpu 0:
    0x0009B498 0x0009BE3C 0x00029DD8 0x000AED04 0x000AEF84 0x000B2A78
    Proceeding back via exception chain:
    Exception state (sv=0x2a4a9a00)
    PC=0x00BE2918; MSR=0x00149030; DAR=0x1F3B8000; DSISR=0x42000000; LR=0x00BE2A00; R1=0x1E93FBA0; XCP=0x00000008 (0x200 - Machine check)
    0x00946170 0x00C3B5E0 0x00C3BF4C 0x00BDBEC4 0x00357748 0x003569AC
    0x00356A60 0x000B05D4
    Kernel loadable modules in backtrace (with dependencies):
    dependency: com.apple.iokit.IOPCIFamily(2.4.1)@0x7a5000
    dependency: com.apple.iokit.IOATAFamily(1.7.3f1)@0x932000
    dependency: com.apple.iokit.IO80211Family(211.1)@0xbae000
    dependency: com.apple.iokit.IOPCIFamily(2.4.1)@0x7a5000
    dependency: com.apple.iokit.IONetworkingFamily(1.6.0)@0xb4d000
    Exception state (sv=0x1e95a000)
    PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)

    BSD process name corresponding to current thread: kernel_task

    Mac OS version:

    Kernel version:
    Darwin Kernel Version 9.3.0: Fri May 23 00:51:20 PDT 2008; root:xnu-1228.5.18~1/RELEASE_PPC
    System model name: PowerBook6,7
  2. macrumors 65816

    Insulin Junkie

    May 5, 2008
    Mainland Europe
    Run disk utility from the install CD and check / repair the harddrive. That may do the trick. If it can't be repaired, you'll need to replace it.
  3. macrumors 68000


    Mar 3, 2006
    Kernel panics may be one of several issues. Go here for a free guide on ibook problems and things to try to solve them.
  4. Moderator emeritus


    Oct 21, 2003
    Portland, OR
    Well, it starts with the hard drive interface, then moves onto the AirPort card.

    Been inside the iBook there fiddling? Replacing hard drives?
  5. thread starter macrumors regular

    Apr 27, 2003
    Sheffield, UK
    I have not changed the hard drive or airport card
  6. macrumors G5

    Sun Baked

    May 19, 2002
    Able to run the AppleCare Diagnostics or some other HW test to look at the motherboard.

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