Ibook dying

gerry87

My ibook seems to be dying, when i turn it on it only lasts for a few minutes before getting the kernel panic screen. Is there any sort of diagnostic thing on macs that would show what the problem is. Is it fixable?

edit: Its an ibook G4 running leopard.

WUSBDesign

Kernel panics are most probably due to faulty RAMs. Take out the expansion RAM and see if you still get these. If you do, then chances are the iBook is as good as gone, since the internal RAM are soldered onto the main board.

FWIW, most iBooks suffer another problem - that of the graphics chips failing due to poor soldering. Repair costs will be prohibitive.

Sad Professor

There's a chance the RAM has just become loose as well. I once experienced multiple kernel panics for this reason.

Probably a good idea to run a hardware test as well. Insert the OSX install disc and hold ALT on startup.

muggyog

Kernel panics are logged so go to the console app and under the log icon look for panic.log and crashreporter.log. Either should give you a pointer to the problem.

Quick and basic check of RAM can be done through system profiler (Apple icon-->about this Mac-->more info-->memory).

gerry87

I checked the console panicreporter log and it gives this

Sun Apr 27 22:22:01 2008
panic(cpu 0 caller 0x000AEB84): "Uncorrectable machine check: pc = 00000000174F58C0, msr = 0000000000149030, dsisr = 40000000, dar = 0000000012E26000\n" " AsyncSrc = 0000000000000000, CoreFIR = 0000000000000000\n" " L2FIR = 0000000000000000, BusFir = 0000000080000000\n"@/SourceCache/xnu/xnu-1228.3.13/osfmk/ppc/trap.c:975
Latest stack backtrace for cpu 0:
Backtrace:
0x0009B2F8 0x0009BC9C 0x00029DC4 0x000AEB84 0x000AEE04 0x000B28F8
Proceeding back via exception chain:
Exception state (sv=0x12e7e780)
PC=0x174F58C0; MSR=0x00149030; DAR=0x12E26000; DSISR=0x40000000; LR=0x174F5B54; R1=0x12F3F910; XCP=0x00000008 (0x200 - Machine check)
Backtrace:
0x17484150 0x174F5B54 0x1749AC1C 0x1749B308 0x174D06A0 0x1748D7E4
0x1748DCBC 0x0034272C 0x00343880 0x00345730 0x00344850 0x000B0454
Kernel loadable modules in backtrace (with dependencies):
com.apple.driver.AirPortBrcm43xx(311.46.32)@0x17483000->0x175affff
dependency: com.apple.iokit.IO80211Family(211.1)@0x16f65000
dependency: com.apple.iokit.IOPCIFamily(2.4.1)@0x12ec8000
dependency: com.apple.iokit.IONetworkingFamily(1.6.0)@0x16dac000
Exception state (sv=0x12dfa500)
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:
9C31

Kernel version:
Darwin Kernel Version 9.2.0: Tue Feb 5 16:15:19 PST 2008; root:xnu-1228.3.13~1/RELEASE_PPC
System model name: PowerBook6,7

Does this mean anything to anyone? I also tried the install CD (It's a macbook one), held alt and it just came up trying to install Leopard. It said hold 'd' on the cd, so i tried that and it kept crashing.

I got a screwdriver and tried to do something or other with the RAM, but hadn't a clue what i was doing so put it back together. It has 512MB ram, would that mean there's no extra ram in it? It didn't look like there were any removable bits.

muggyog

To boot from CD you hold down the 'C' key.

Did your kernel panics start when you installed Leopard?


The

com.apple.driver.AirPortBrcm43xx(311.46.32)@0x17483000->0x175affff

bit in your log suggests your wireless card is not happy.

Lots of problems out there on this one, just Google airport + kernel panic!

If you can connect to a wired network for long enough try doing a system update, 10.5.2 resolves some wireless panics. http://docs.info.apple.com/article.html?artnum=307109

You may have to get another mac user do download the standalone installer http://www.apple.com/support/downloads/macosx1052comboupdate.html

Hugh_C

gerry87 wrote: »

edit: Its an ibook G4 running leopard.

have you tried re-installing the system? that's the first thing I'd try before worrying about hardware problems.

hc