[- - e r i k - -]

Hi there!

I have a Mac Pro 2x2.66, ATI X1900 XT with 4GB of RAM. Lately I've experienced some might weird behaviour. Every now and again, especially after waking up. My dual 20" screens will suddenly go black and to sleep. If I leave them like this, they'll turn on. My Mac Pro seems to be running, but trying to quit applications etc won't yield any disk activity. Trying to turn the monitors back on / refitting the video cables won't do anything either.

So I am led to believe that the machine is kernel panicking so bad that even the video system shuts down. Anyone experienced anything like this?

Console's panic.log has this to say:

Wed Jul 4 08:51:00 2007
panic(cpu 3 caller 0x001A3B9B): Machine Check (CPU:3, thread:0x647e050, trapno:0x12, err:0x0),registers:
CR0: 0x8001003b, CR2: 0x00669448, CR3: 0x00e17000, CR4: 0x000006e0
EAX: 0x00000000, EBX: 0x57e89000, ECX: 0x00000001, EDX: 0x00000000
ESP: 0x47e4bec0, EBP: 0x47e4bf18, ESI: 0x00000000, EDI: 0x57e7013c
EFL: 0x00000046, EIP: 0x00a0a8fb

Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x57e76ee8 : 0x128d08 (0x3cb134 0x57e76f0c 0x131de5 0x0)
0x57e76f28 : 0x1a3b9b (0x3d0bb4 0x3 0x647e050 0x12)
0x57e770e8 : 0x19bb03 (0x57e77100 0x0 0x0 0x0) Backtrace terminated-invalid frame pointer 0x47e4bf18

Kernel version:
Darwin Kernel Version 8.9.1: Thu Feb 22 20:55:00 PST 2007; root:xnu-792.18.15~1/RELEASE_I386


*********

Mon Jul 30 16:43:55 2007
Machine-check capabilities 0x0000000000000006:
6 error-reporting banks
Machine-check status 0x0000000000000005
restart IP valid
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0xb200004000000800 valid
MCA error code : 0x0800
Model specific error code: 0x0000
Other information : 0x00000040
Status bits:
Processor context corrupt
Error enabled
Uncorrected error
IA32_MC1_STATUS(0x405): 0x0000000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0x0020000000000000 invalid
IA32_MC4_STATUS(0x411): 0x0000000000000011 invalid
IA32_MC5_STATUS(0x415): 0xb200121020080400 valid
MCA error code : 0x0400
Model specific error code: 0x2008
Other information : 0x00001210
Status bits:
Processor context corrupt
Error enabled
Uncorrected error
panic(cpu 1 caller 0x001A4355): Machine Check (CPU:1, thread:0x64abb04, trapno:0x12, err:0x0),registers:
CR0: 0x8001003b, CR2: 0x4aa79044, CR3: 0x00e47000, CR4: 0x000006e0
EAX: 0x00000000, EBX: 0x57e57000, ECX: 0x00000001, EDX: 0x00000000
ESP: 0x47b8beb0, EBP: 0x47b8bf18, ESI: 0x00000000, EDI: 0x57e3e13c
EFL: 0x00000046, EIP: 0x00a35c86

Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x57e44ee8 : 0x128d08 (0x3cc0a4 0x57e44f0c 0x131de5 0x0)
0x57e44f28 : 0x1a4355 (0x3d2220 0x1 0x64abb04 0x12)
0x57e450e8 : 0x19bc13 (0x57e45100 0x0 0x0 0x0) Backtrace terminated-invalid frame pointer 0x47b8bf18

Kernel version:
Darwin Kernel Version 8.10.1: Wed May 23 16:33:00 PDT 2007; root:xnu-792.22.5~1/RELEASE_I386


*********

Tue Jul 31 11:23:45 2007
panic(cpu 1 caller 0x00191931): pmap_flush_tlbs() timeout pmap=0x4b3700 cpus_to_signal=0x8
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x47efbb88 : 0x128d08 (0x3cc0a4 0x47efbbac 0x131de5 0x0)
0x47efbbc8 : 0x191931 (0x3cf2fc 0x4b3700 0x8 0x190ad5)
0x47efbc38 : 0x193c6b (0xfeafa490 0xfeafa498 0x0 0x5f020000)
0x47efbc88 : 0x18fd11 (0x4b3700 0x5f492000 0x0 0x5f493000)
0x47efbd48 : 0x15ee4f (0x6835e80 0x29000 0x0 0x1000)
0x47efbdf8 : 0x16133c (0x6b8d220 0x29000 0x0 0x5)
0x47efbf48 : 0x1a4cc8 (0x155912c 0x29000 0x0 0x5)
0x47efbfc8 : 0x19ade4 (0x64a17a0 0x0 0x19e0b5 0x64afb70) No mapping exists for frame pointer
Backtrace terminated-invalid frame pointer 0xbffff078

Kernel version:
Darwin Kernel Version 8.10.1: Wed May 23 16:33:00 PDT 2007; root:xnu-792.22.5~1/RELEASE_I386


*********

[seanc]

There have been reports of issues with the X1900 and blackouts, have a look around the last few threads in this forum, macgeek and a few others were talking about it.

Apparently there is a revision 2 card that Apple will send out, so you could try that route.

Edit: Here you go: http://forums.macnn.com/65/mac-pro-a...ue-my-mac-pro/