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New Monitor Causing Kernel Panics

2177 Views 4 Replies Latest reply: Feb 5, 2009 1:51 PM by a brody RSS
Shu Chow Level 1 Level 1 (0 points)
Currently Being Moderated
Feb 3, 2009 8:04 PM
I'm having a really odd problem. I've got a Mac Pro that's about a year old. It has the nVidia 8800 GT card. All this time, it's been humming along fine with a ViewSonic 21" CRT monitor. I just got an Acer P223W monitor. LCD, HD, DVI, the whole shebang.

If the monitor is powered down, when I start the machine up, I will get a kernel panic shortly after hearing the chime and seeing the Apple logo. I then have to force it off, switch the output port on the card, then everything starts up again. This is reproducible every time. I basically have to leave the monitor in standby mode.

No problems otherwise - when the Mac Pro is on, I can turn the monitor off. It'll be fine as long as I turn it back on at shutdown and keep the monitor on. I have no problems waking from sleep. This is really making me scratch my head.

Any ideas?

When it restarts, there's a message about the OS X unexpectedly crashing and do I want to report it to Apple. Here's the log from that:

Tue Feb 3 22:47:11 2009
Machine-check capabilities (cpu 4) 0x0000000000000806:
family: 6 model: 23 stepping: 6 microcode: 1547
Intel(R) Xeon(R) CPU E5462 @ 2.80GHz
6 error-reporting banks
threshold-based error status present
Machine-check status 0x0000000000000005:
restart IP valid
machine-check in progress
MCA error-reporting registers:
IA32MC0STATUS(0x401): 0xb200004000000800 valid
MCA error code: 0x0800
Model specific error code: 0x0000
Other information: 0x00000040
Threshold-based status: No tracking
Status bits:
Processor context corrupt
Error enabled
Uncorrected error
IA32MC1STATUS(0x405): 0x0000000000000000 invalid
IA32MC2STATUS(0x409): 0x0000000000000000 invalid
IA32MC3STATUS(0x40d): 0x0020000000000000 invalid
IA32MC4STATUS(0x411): 0x0000000000000011 invalid
IA32MC5STATUS(0x415): 0xb200221024080400 valid

There is nothing in Console about this.
Santa Rosa MacBook, Harpertown Mac Pro, Mac OS X (10.5.6)
  • a brody Level 9 Level 9 (62,005 points)
    Currently Being Moderated
    Feb 4, 2009 11:54 AM (in response to Shu Chow)
    It sounds to me you have either 6 bad RAM boards, or 6 bad RAM slots. Run the hardware test that came with your machine. If no error is reported, it usually means the boards have bad chips on them. Make sure the boards are to spec*:

    http://www.macmaps.com/badram.html

    - * Links to my pages may give me compensation.
    MBP 15" 2.2 Ghz/iMac C2D 2.17/20 inch/iMac G5 1.8/A/iMac G4/Mac OS 9, Mac OS X (10.5.5), AppleTV, Windows XP & 2000, Canon MX700, Nokia 6085h/Time Cap/Sharp 52D64U
  • The hatter Level 9 Level 9 (58,535 points)
    Currently Being Moderated
    Feb 5, 2009 8:36 AM (in response to Shu Chow)
    Memtest is another good test. RAM can be bad even Apple's or they could be loose even from shipping. I would not want to run with just 2GB anyway.
    Mac Pro Windows 7 9800GTX 4 x WD Caviar 640, Vista 64-bit ACD 23" Sonnet Tempo E4P APC RS1500
  • a brody Level 9 Level 9 (62,005 points)
    Currently Being Moderated
    Feb 5, 2009 1:51 PM (in response to Shu Chow)
    No one test can test all bad RAM. Even if Memtest doesn't see anything, it doesn't mean there isn't anything. Only if one test sees something, can you believe it is there.
    MBP 15" 2.2 Ghz/iMac C2D 2.17/20 inch/iMac G5 1.8/A/iMac G4/Mac OS 9, Mac OS X (10.5.5), AppleTV, Windows XP & 2000, Canon MX700, Nokia 6085h/Time Cap/Sharp 52D64U

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