I did write a driver, but later I looked in more detail at the adm1021 driver and saw that it is a more appropriate driver for the sensor on the Xeons. Intel got a little tricky with the older 400MHz FSB Xeon procs and included the sensor on the PCB rather than building it into the CPU processor die itself. Then they wrote the Xeon sensor spec to be a subset of the ADM1021 register set. That let them use any ADM1021 compliant sensor. So if you 'modprobe adm1021' and it detects two sensors, then you've found your CPU sensors. The CPU temperatures will be the "REMOTE" temperatures from those two. The "BOARD" or internal temperatures will be a sensor in the adm1021 itself on the CPU carrier board. If you have an adm1023 you get .25degC resolution as a bonus. If you've got 533MHz FSB Xeons, then you've got a different problem. Intel *removed* the onboard adm1021 from the 533MHz parts and left it up to the motherboard to sample and report the die temperature. In that case, you won't find a "xeon" sensor on the I2C bus, but should look for temperatures from some other sensor (winbond w83781d or compatible for example...) I don't have direct experience with the Westerville board, so I'm sorry I won't be much more help. I've CC'd the sensors mailing list so perhaps someone on that list has your motherboard and can advise you. :v) Dave wrote: > Hi! I found a note on the web from 2002 about you working on a P4 > (Xeon) temp sensor for lm_sensors. How did that work out? I'm trying > to read the on-chip temerature on an SE7501WV2 Intel (westerville) board > with dual xeons, and not getting anywhere. > > If you have somehting that you'd be willing to share, even if it's not > complete or stable, I'd really appreciate it. > > thanks, > dave. > > -- Philip Pokorny, Director of Engineering Tel: 415-358-2635 Fax: 415-358-2646 Toll Free: 888-PENGUIN PENGUIN COMPUTING, INC. www.penguincomputing.com
