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SubjectRe: [lm-sensors] bad temperature values from w83781d in 2.6.22
Hi Joerg:

* Joerg Sommrey <jo@sommrey.de> [2007-08-08 17:17:16 +0200]:
> Hi Mark,
>
> just to eliminate as many impacts as possible, I did:
> - reinstall the unmodified sensors.conf from Tyan's support page
> - power off before rebooting
>
> A call to "sensors -s" is done without errors in all cases.
> The module parameters I use currently with both kernels:
>
> options w83781d force_w83782d=0,0x2d force_subclients=0,0x2d,0x48,0x49
> options w83627hf force_addr=0x0c00
>
> When I first realized the problem, I didn't use w83627hf yet. Results
> are the same when w83781d is used as driver for w83627hf.
> Parameters in that case just from Tyan:
>
> options w83781d force_w83782d=0,0x2d force_subclients=0,0x2d,0x48,0x49 force_w83627hf=0,0x2c force_subclients=0,0x2c,0x4a,0x4b init=0
>
> "My" i2cdump doesn't accept an -y option, maybe a Debianism. Results
> see below.

Newer i2cdump skips the 5-second warning when given -y, that's all.

> ### 2.6.21 ###############################
> Script started on Wed Aug 8 16:53:10 2007
> bear:~/hwmon# i2cdump 0 0x2d b 0 0x4e

(snip tons of results)

Thanks for sending all that. I see one bug clearly, and I'm pretty close to
seeing the other one. But for tonight, I need sleep.

In the meantime, please try this command as root, against the newer kernel,
*after* you've done 'sensors -s':

# i2cset -f 0 0x2d 0x5d 0x0e b

Wait > 2 seconds for the hardware to update itself, then run 'sensors' again.
I'm pretty sure you'll see the correct temps.
Regards,

--
Mark M. Hoffman
mhoffman@lightlink.com

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