Kernel Panic again!! Please help me...

Question

Hi,
I'm Francesco from Italy...
This is my third kernel panic....but last two times i understand that it happened for a energy blackout.
This time it happen during iMovieHD is running and i try to record a clip using integrated iSight on my iMac intel 20"
This is panic.log:
Tue Aug 29 14:44:19 2006
panic(cpu 1 caller 0x0019CADF): Unresolved kernel trap (CPU 1, Type 14=page fault), registers:
CR0: 0x80010033, CR2: 0xe000038b, CR3: 0x00d74000, CR4: 0x000006a0
EAX: 0xe00002e7, EBX: 0x0312a38f, ECX: 0x0312a38f, EDX: 0x0450f000
ESP: 0xe000038b, EBP: 0x1c793d08, ESI: 0x0375c88c, EDI: 0x04183000
EFL: 0x00010213, EIP: 0x005a14de, CS: 0x00000008, DS: 0x036a0010
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x1c793bc0 : 0x128b5e (0x3bc46c 0x1c793be4 0x131bbc 0x0)
0x1c793c00 : 0x19cadf (0x3c18e4 0x1 0xe 0x3c169c)
0x1c793cb0 : 0x197c7d (0x1c793cc4 0x1c793d08 0x5a14de 0x48)
0x1c793cbc : 0x5a14de (0x48 0x33a0010 0x4510010 0x36a0010)
0x1c793d08 : 0x5a3604 (0x33aa000 0x312a38f 0x1c793d38 0x3ae636)
0x1c793d38 : 0x3a35d5 (0x4183000 0x312a38f 0x375c88c 0x375c890)
0x1c793d88 : 0x18a315 (0x4183000 0x6 0x36a13c4 0x1)
0x1c793dd8 : 0x12b389 (0x36a139c 0x375c864 0x0 0x0)
0x1c793e18 : 0x124902 (0x36a1300 0x0 0x30 0x1c793efc)
0x1c793f28 : 0x193034 (0x1c793f54 0x0 0x0 0x0)
0x1c793fd8 : 0x19814b (0x3a01d48 0x3a01d48 0x312a38f 0xe000038b) No mapping exists for frame pointer
Backtrace terminated-invalid frame pointer 0xb02a1718
Kernel loadable modules in backtrace (with dependencies):
com.apple.ATIRadeonX1000(4.3.2)@0x59c000
dependency: com.apple.iokit.IOPCIFamily(2.0)@0x563000
dependency: com.apple.iokit.IOGraphicsFamily(1.4.3)@0x572000
dependency: com.apple.iokit.IONDRVSupport(1.4.3)@0x58d000
Kernel version:
Darwin Kernel Version 8.7.1: Wed Jun 7 16:19:56 PDT 2006; root:xnu-792.9.72.obj~2/RELEASE_I386
Thanks in advance for your precious help!!
CIAO!!

Answer 1

Ciao, Francesco.
Your panic log cites a page fault:
panic(cpu 1 caller 0x0019CADF): Unresolved kernel trap (CPU 1, Type 14=page fault)...
This is a common fault type, indicating the processor could not access either data memory or the next instruction to be executed. Potential causes include RAM problems, hard disk corruption, and programming errors.
The kernel-loadable modules in the Backtrace are pointing to your graphics card and related subsystems:
Kernel loadable modules in backtrace (with dependencies):
com.apple.ATIRadeonX1000(4.3.2)@0x59c000
dependency: com.apple.iokit.IOPCIFamily(2.0)@0x563000
dependency: com.apple.iokit.IOGraphicsFamily(1.4.3)@0x572000
dependency: com.apple.iokit.IONDRVSupport(1.4.3)@0x58d000
This could imply a faulty graphics card, including the possibility of bad VRAM (video RAM) on the card, but these elements may have simply been cited as they were the executing at the time. Further testing is required to determine if the graphics card is the problem.
See my "Resolving Kernel Panics" FAQ. This FAQ includes step-by-step instructions for identifying and resolving some of the most common causes of kernel panics.
My FAQ is a roadmap: start at the beginning and work through to the end, following the instruction in the order specified, including the "If all else fails..." section if a cause or resolution is not found in an earlier troubleshooting step therein.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.