piix4 fails to reset? (ticket #1078)

Philip Edelbrock phil at netroedge.com
Thu Dec 19 22:31:28 CET 2002


Humm, I don't suppose you can connect a scope to SDA and SCL to see what 
is happening?  It sounds like a hardware flaw. :'(


Phil

Joe Drew wrote:

>On Thu, 2002-12-19 at 15:40, Philip Edelbrock wrote:
>  
>
>>It's likely that a chip on the bus is hanging it.  Is there a lead-up to 
>>this state?  How can it be reproduced on your computer?
>>    
>>
>
>Unfortunately, I know of no reliable way to reproduce it. This happens
>fairly often, it seems, but it doesn't *always* happen, even when
>diagnostics are running. The diagnostics simply run 'sensors' for a
>particular chip every 5 minutes (and parse the output).
>
>If it makes a difference, this is on a Ziatech 'blade' CPU card - a
>CompactPCI machine. It happens even on different model machines where
>the only chip that is on the SMBus is a Maxim 1617A, and the only
>relevant modules loaded are adm1021, i2c-piix4, and dmi_scan.
>
>  
>



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