[GSixZero]

Can anyone decipher this panic log? User was just surfing the web with no periferials other than apple keyboard and mouse. Hooked up to ethernet.

panic(cpu 0): trap: disallowed access to cache inhibited memory - 00000000E1404350

Latest stack backtrace for cpu 0:
Backtrace:
0x00083498 0x0008397C 0x0001EDA4 0x00090A14 0x0009402C
Proceeding back via exception chain:
Exception state (sv=0x2CA81780)
PC=0x0008D5E4; MSR=0x00009030; DAR=0xE1404350; DSISR=0x04000000; LR=0x0028F998; R1=0x0CE038D0; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x002904CC 0x00290660 0x0026F680 0x00462D9C 0x00462BBC 0x00460454 0x0044BE5C 0x0027E650
0x00280324 0x0007AC48 0x00021668 0x0001BCE8 0x0001C0F0 0x00094318 0x55AA55AA
Kernel loadable modules in backtrace (with dependencies):
com.apple.ATIRadeon8500(3.4.2)@0x445000
dependency: com.apple.iokit.IOPCIFamily(1.4)@0x398000
dependency: com.apple.iokit.IOGraphicsFamily(1.3.5)@0x40f000
dependency: com.apple.iokit.IONDRVSupport(1.3.5)@0x42f000
Exception state (sv=0x2017AC80)
PC=0x90007878; MSR=0x0200F030; DAR=0x0073F008; DSISR=0x42000000; LR=0x900073F8; R1=0xBFFEE5D0; XCP=0x00000030 (0xC00 - System call)


Here's the system profiler info...

Hardware Overview:

Machine Model: eMac
CPU Type: PowerPC G4 (1.1)
Number Of CPUs: 1
CPU Speed: 1.25 GHz
L2 Cache (per CPU): 512 KB
Memory: 512 MB
Bus Speed: 167 MHz
Boot ROM Version: 4.8.2f1
Serial Number: xxxx
Sales Order Number: xxxx

[galarneau]

Put any RAM in recently? Move the machine (RAM may have come loose).

Even though it says it's caused by your video card, I had the same exact problem on a PowerBook, with the kernel log saying it was the video card, but it was actually a loose Airport card.

I'd start off by reseating RAM/Airport cards etc. Even if you're not using Airport, it could be causing a panic.

[GSixZero]

No, RAM was seated ok... swapped it out for some known good RAM anyway, but the problem is still going on. No airport card. Machine is pretty stock for all intensive purposes.