iTunes-iPod kernel panic error

njgnjg

Registered
I am getting a "kernel panic" message when I try to sync iPod with iTunes.
(i.e., grey box on screen with words "You need to restart your computer...").

iTunes is version 7.

iPod is 5th generation (video), 60 GB, refurbished by Apple, 2 months old. Latest software version (1.2, I think).

iTunes library is stored on external LaCie mini drive, and contains 5,000+ songs from various sources (CDs, Limewire, bittorrent, etc.)

Problem has happened numerous times and now happens every time I try to sync. It typically craps out after transferring about 500 songs, but has reached as few as 100+ and as many as 1000+

Things I have already tried:

- restoring iPod

- transferring playlists manually (works to a point, but after a certain amount of time, same problem occurs)

- upgrading from iTunes 7 to 7.0.2

- ensuring AIFF files are all unchecked (it seemed to be crashing when it reached a certain playlist, which turned out to be 1400 bit rate AIFFs--thought this would fix it for sure--but no).

Thought about trying downgrading to iTunes 6, but am leary of any unpleasant side effects this might have.

Called Apple Support this morning, who were essentially useless (I suppose I was naive to expect the person on the line to be a technician... She didn't even know what a kernel panic is. Neither did I until a few days ago, but I don't work for Apple.) The Apple person suggested:

- disconnecting the printer

- disabling virus protection

- checking that disk mode works, to rule out iPod hardware issues

- reinstall same version of iTunes in case of corruption during downloading (but DISCOURAGED installing an earlier version).

Haven't had chance to try these yet, but my gut tells me they will fail to solve the problem. My gut is starting to tell me that it may be caused by corrupted or incompatible song files (I dragged a big bunch of new songs to iTunes last week, around the time the problem started)--but would this explanation make sense, technically speaking?

In case it's helpful, I've pasted a couple of sample panic logs.

Thanks very much for any ideas.

Nick

*********

Sun Nov 5 23:42:06 2006


panic(cpu 0): ppc_usimple_lock: simple lock deadlock detection l=0x013087A0, pc=0x000252B4

Latest stack backtrace for cpu 0:
Backtrace:
0x00083498 0x0008397C 0x0001EDA4 0x0008DE5C 0x000252B4 0x0008D8E4 0x0006FBB0 0x0022D454
0x000BB818 0x000BAEE0 0x001DD5B0 0x000CE908 0x00222FC0 0x00222DD8 0x00246D84 0x000941C0
0x00090009
Proceeding back via exception chain:
Exception state (sv=0x19342000)
PC=0x9000ED4C; MSR=0x0200F030; DAR=0x02E0408C; DSISR=0x40000000; LR=0x005AA52C; R1=0xF007FFB0; XCP=0x00000030 (0xC00 - System call)

Kernel version:
Darwin Kernel Version 7.9.0:
Wed Mar 30 20:11:17 PST 2005; root:xnu/xnu-517.12.7.obj~1/RELEASE_PPC



*********

Mon Nov 6 07:53:25 2006


panic(cpu 0): zalloc
Latest stack backtrace for cpu 0:
Backtrace:
0x00083498 0x0008397C 0x0001EDA4 0x00038C48 0x000241A0 0x0006DE0C 0x00070AD4 0x00077854
0x00077624 0x0026D884 0x0026DAE4 0x0026CAF0 0x0026C19C 0x194DF6BC 0x194DF944 0x194DF2D4
0x1948AF0C 0x19489B20 0x1948AF0C 0x19536C78 0x195374C8 0x1953755C 0x195336F8 0x00267FCC
0x00266EAC 0x00266E10
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.IOUSBMassStorageClass(1.3.2)@0x194dc000
dependency: com.apple.iokit.IOUSBFamily(2.1.5)@0x19487000
dependency: com.apple.iokit.IOStorageFamily(1.3.4)@0x19a59000
dependency: com.apple.iokit.IOSCSIArchitectureModelFamily(1.3.9)@0x199a7000
com.apple.driver.AppleUSBEHCI(2.2.0)@0x1952f000
dependency: com.apple.iokit.IOUSBFamily(2.1.5)@0x19487000
dependency: com.apple.iokit.IOPCIFamily(1.4)@0x17919000
com.apple.iokit.IOUSBFamily(2.1.5)@0x19487000
Proceeding back via exception chain:
Exception state (sv=0x19344C80)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)

Kernel version:
Darwin Kernel Version 7.9.0:
Wed Mar 30 20:11:17 PST 2005; root:xnu/xnu-517.12.7.obj~1/RELEASE_PPC


*********
 
I just noticed, that sometimes OSX has problems managing certain USB devices. (For example my no name USB keyboard, an ipod 5 gen 30GB and a Palm device would cause my mac mini to crash.)

Make sure that the ipod and external drive is connected directly to the mac (I also mean avoiding the USB hub of the cinema display, if you have one) - just to get rid of all possible "error sources".

Try switching devices around between the different USB ports.
 
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