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G4 iBook restart

Discussion in 'PowerPC Macs' started by skd, Jan 27, 2008.

  1. skd
    macrumors 6502

    my wife has a G4 iBook 1.33 GHz power pc, 1.5 GB DDR SDRAM, L2 cache 133 mHz, with Mac OSX - leopard -
    several times a day the following prompt appears -
    "You need to restart your computer. Hold down the power button for several seconds or press the restart button"
    what's going on? & what can be done to fix it?
  2. macrumors 68040


    What you're talking about is referred to as a 'Kernel Panic'. They can be caused by any number of things, ranging from Software issues to Hardware issues such as faulty RAM or a failing Hard Drive (quite common in laptops).

    Insert your OS X install disk which came with the laptop, shut the laptop down and then start it back up, pressing and holding D almost straight after the power button. It will spin up the CD and go into Apple Hardware Test. Run a test and if it throws up any issues, then report back.

    If it shows no errors, then it's almost certainly a software related issue. If so, it may be something connected to the computer which is causing software conflicts, anything connected via USB or FireWire could be the culprit. Try disconnecting any hardware and see if that seems to improve things.

    If this doesn't seem to help, then back up the hard drive or any documents she'd like to keep and re-install OS X.

    If it's only just started doing it, and coincides with installing Leopard, then it's almost CERTAINLY a software issue and therefore you should re-install Leopard from a CLEAN install.[/p]
  3. macrumors 603


    Here's some more info about Kernel Panics:


    We might be able to help you a bit more if you post your panic log. The log is a recording of what was going on at the time the iBook panicked, including what process started the issue. You can find it in Macintosh HD -> Library -> Logs.
  4. skd
    macrumors 6502

    thanks......i just got back to the house and will to what was recommended and report back.
  5. skd
    macrumors 6502

    I ran the hardware test and everything passed -
    I'll now reinstall the OS.....
  6. macrumors 68000


  7. skd
    macrumors 6502

    i'll try that now...
  8. skd
    macrumors 6502

    i've reseted the pram and so so good..........
    can someone explain to me what it means to reset the pram?
  9. skd
    macrumors 6502

    just got the kernal panic.........
    I think I need to do a clean install.....
  10. skd
    macrumors 6502

    here's the log report

    Sun Jan 27 21:02:09 2008
    panic(cpu 0 caller 0x000AE584): "Uncorrectable machine check: pc = 0000000000BB662C, msr = 0000000000149030, dsisr = 42000000, dar = 00000000004B7000\n" " AsyncSrc = 0000000000000000, CoreFIR = 0000000000000000\n" " L2FIR = 0000000000000000, BusFir = 0000000080000000\n"@/SourceCache/xnu/xnu-1228.0.2/osfmk/ppc/trap.c:975
    Latest stack backtrace for cpu 0:
    0x0009AD18 0x0009B6BC 0x00029DC4 0x000AE584 0x000AE804 0x000B22F8
    Proceeding back via exception chain:
    Exception state (sv=0x42d4ec80)
    PC=0x00BB662C; MSR=0x00149030; DAR=0x004B7000; DSISR=0x42000000; LR=0x00B4D188; R1=0x300D7D20; XCP=0x00000008 (0x200 - Machine check)
    0x00000000 0x00B4D188 0x00358D94 0x0003F8D8 0x000AFE54
    Kernel loadable modules in backtrace (with dependencies):
    dependency: com.apple.iokit.IO80211Family(200.7)@0xb22000
    dependency: com.apple.iokit.IOPCIFamily(2.4)@0x888000
    dependency: com.apple.iokit.IONetworkingFamily(1.6.0)@0xa55000
    Exception state (sv=0x42d16780)
    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 9.1.0: Wed Oct 31 17:48:21 PDT 2007; root:xnu-1228.0.2~1/RELEASE_PPC
  11. skd
    macrumors 6502

    can anybody make sense of this log
  12. macrumors 68000


    If you have added any RAM , take it out and see if the problem goes away. Or if you have the hardware test CD'S try them.
  13. macrumors newbie

    IBook G4 OS X Unexpectedly Quitting Kernel Panic Log

    Was there ever a response in regards to this problem? I have the same problem and get the same message. Please help!! My iBook works intermittently. Sometimes for 2 days before the OS crashes or sometimes 5 mins or 45 mins.

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