[Feoen]

*UPDATE*

I found this topic. I had my 16 GB iPod Touch connected through USB through the USB Apple Keyboard (flat) that I have. Perhaps this was the cause of this KP?

Apple - Support - Discussions - Shut Down Kernel Panic MBP ...

*original post*



Hello. I just joined this board because I am in need of help.

Last night I decide to shut down my new iMac. I purchased it three weeks ago. It's the model with the 2.8 Ghz processor. I have had no problems with it up til last night. As I'm shutting down, it fades to the usual blue screen, but all of a sudden the blue "rolls" into grey, and I get a message in multiple languages telling me that I have to reboot the computer.

It reboots fine, but it tells me that Mac OSX had crashed unexpectedly.

Is anyone able to tell me why this happened, perhaps? Is it a hardware issue? Software? Thank you very much...

panic(cpu 0 caller 0x001A4A55): Unresolved kernel trap (CPU 0, Type 14=page fault), registers:
CR0: 0x8001003b, CR2: 0x00000001, CR3: 0x01028000, CR4: 0x000006e0
EAX: 0x03dad740, EBX: 0x0412ccc0, ECX: 0x00000000, EDX: 0x03d8f370
CR2: 0x00000001, EBP: 0x25793bf8, ESI: 0x0476a804, EDI: 0x0000001f
EFL: 0x00010202, EIP: 0x00000001, CS: 0x00000008, DS: 0x00000010

Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x257939c8 : 0x128d08 (0x3cc0ec 0x257939ec 0x131de5 0x0)
0x25793a08 : 0x1a4a55 (0x3d2524 0x0 0xe 0x3d1d48)
0x25793b18 : 0x19aeb4 (0x25793b30 0x297 0x25793b68 0x39bd22)
0x25793bf8 : 0x54b71c (0x476a800 0x4813000 0x4813004 0x12d97d)
0x25793c18 : 0x3b4f29 (0x4813000 0x4b069c 0x25793c68 0x0)
0x25793c38 : 0x18795f (0x4813000 0x472dcd8 0x1d 0x25793c68)
0x25793c88 : 0x12b4d7 (0x4b7aea8 0x43d656c 0xd 0x11cc32)
0x25793cc8 : 0x11f1f0 (0x4b7ae00 0x25793d5c 0x24 0x0)
0x25793d08 : 0x12b6ba (0x4b7ae00 0x10000 0x0 0x11f194)
0x25793d38 : 0x1492f1 (0x25793d5c 0x24 0x0 0x0)
0x25793d88 : 0x120221 (0x472dcd8 0x1 0x25793da8 0x1)
0x25793da8 : 0x12248f (0x472dcd8 0x1 0x0 0x140867)
0x25793df8 : 0x123691 (0x3d0c3f0 0x1707 0x462ed70 0x3d3f7a0)
0x25793e38 : 0x13a614 (0x3d0c3f0 0x8f 0x0 0x451bdac)
0x25793e88 : 0x33b493 (0x3d3f7a0 0x25793ee4 0x25793ee8 0x3d3f7a0)
0x25793ec8 : 0x345947 (0x451bdac 0xf 0x0 0x0) Backtrace continues...
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.IOUSBFamily(2.7.7)@0x536000

Kernel version:
Darwin Kernel Version 8.10.3: Wed Jun 27 23:29:36 PDT 2007; root:xnu-792.23.3~1/RELEASE_I386

Model: iMac7,1, BootROM IM71.007A.B00, 2 processors, Intel Core 2 Duo, 2.8 GHz, 2 GB
Graphics: ATI Radeon HD 2600 Pro, ATI,RadeonHD2600, PCIe, 256 MB
Memory Module: BANK 0/DIMM0, 1 GB, DDR2 SDRAM, 667 MHz
Memory Module: BANK 1/DIMM1, 1 GB, DDR2 SDRAM, 667 MHz
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x88), Broadcom BCM43xx 1.0 (4.150.19.0)
Bluetooth: Version 1.9.1f18, 2 service, 1 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: WDC WD5000AAKS-40TMA0, 465.76 GB
Parallel ATA Device: MATSHITADVD-R UJ-85J
USB Device: Keyboard Hub, Apple, Inc., Up to 480 Mb/sec, 500 mA
USB Device: Apple Optical USB Mouse, Primax Electronics, Up to 1.5 Mb/sec, 100 mA
USB Device: Apple Keyboard, Apple, Inc, Up to 1.5 Mb/sec, 100 mA
USB Device: Built-in iSight, Apple Inc., Up to 480 Mb/sec, 500 mA
USB Device: IR Receiver, Apple Computer, Inc., Up to 1.5 Mb/sec, 500 mA
USB Device: Bluetooth USB Host Controller, Apple, Inc., Up to 12 Mb/sec, 500 mA

[Cold Warrior]

what USB devices do you use with it, and which ones did you have plugged in when you were shutting it down?

[Feoen]

I have the newer, flatter USB keyboard that came with the iMac and the wired Mighty Mouse plugged into that keyboard's right USB port. I had my iPod Touch (16 GB) plugged into the left USB port on the keyboard.

How are you able to diagnose that it is an issue with USB?

[Cold Warrior]

I'm just working off the backtrace that listed the IOUSBFamily.

Run Software Update to make sure you're running the latest software for your new keyboard.

Have you ever shut down the iMac before with your Touch plugged in?

[Feoen]

All my Software is up to date.

I'm fairly sure I've turned it off with the iPod Touch connected. I know I ejected the iPod through iTunes, quit iTunes, let the computer sit for a second, and then went to shut it down. Despite having ejected the iPod, I did not physically disconnect it from my computer.

[Big Mac]

Probably the touch. It's not something to worry about unless it becomes a common occurrence.

[scaredpoet]

I have a feeling the kernel panics will stop if you plug your iPod touch directly into a free USB port on the back of the iMac instead of on the keyboard.

The iPod touch's battery charges through USB, but if I remember correctly, the USB ports coming off the keyboard are not designed to deliver the power necessary to charge the battery. The resulting power imbalance is probably causing the KP.

You have to plug directly into the computer. Or, if you're out of USB ports, you should consider getting a USB 2.0 hub (don't get the cheap USB 1.0 versions, they are SLOW).