[wdmaudiodev] Re: NMI parity error on XP shutdown

  • From: Andrew Elder <andrew_elder@xxxxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Thu, 18 Aug 2005 10:56:10 -0400


Dan,

Thanks for the comments. It is a Dell machine and following your suggestion we did try a BIOS update, but it didn't help. We have figured out that we can get rid of the problem by reseting the SERR bit on our audio card's PCI interface, but that seems a bit extreme. We are researching what other options we might have right now.

- Andrew

Daniel E. Germann wrote:

Andrew,

This is going to sound a little off-the-wall, and your description doesn't quite match what we saw, but it's possible you're hitting the same issue. There is a bug in the BIOS used in several Dell desktop models that mistakenly causes NMIs with some peripheral cards. If you're using a Dell computer, you might want to check to see if there's a BIOS update for your model that includes a fix for this.

-Dan

----- Original Message -----

Date: Wed, 17 Aug 2005 12:12:07 -0400
From: Andrew Elder <andrew_elder@xxxxxxxxxxx>
Subject: [wdmaudiodev] NMI parity error on XP shutdown

Hi,

I'm wondering if anyone else has seen something like this....

Keeping the audio card and system hardware the same, when we moved from
W2k to XP we started seeing BSOD when shutting down the OS. The
bluescreen would say something like Memory Parity  NMI  error.

Our audio hardware is PCI bus mastering and writes to system memory
every 50ms or so. Could that cause a NMI memory parity error ? And why ?

I do know that if I turn off the bus mastering writes that happen every
50ms, the problem goes away.

Anyone else come across something similar ?

- Andrew 


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