piix4 fails to reset? (ticket #1078)
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. :'(
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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