[lm-sensors] 2.6.16-rc5: unreasonable temperature reported by w83627thf-isa-0290

Harald Dunkel harald.dunkel at t-online.de
Sat Apr 1 15:59:22 CEST 2006

Hi Jean,

Jean Delvare wrote:
>> Using "fintek F75387SG" I found this on Google:
>> http://www.fintek.com.tw/files/productfiles/F75387_025P%20datasheet.pdf
>> BTW, my PC is an Aopen MZ915-M .
> Good catch. This is, indeed, the chip that sensors-detect spotted at
> address 0x2d. I just modified this script so that it now knows about
> more Fintek chips. Please give it a try:
> http://www2.lm-sensors.nu/%7Elm78/cvs/lm_sensors2/prog/detect/sensors-detect
> It should properly identify your F75387SG/RG chip at 0x2d now.


Driver `to-be-written' (should be inserted):
  Detects correctly:
  * Bus `SMBus I801 adapter at 5000'
    Busdriver `i2c-i801', I2C address 0x2d
    Chip `Fintek F75387SG/RG' (confidence: 7)

Driver `w83627hf' (should be inserted):
  Detects correctly:
  * ISA bus address 0x0290 (Busdriver `i2c-isa')
    Chip `Winbond W83627THF Super IO Sensors' (confidence: 9)

> I still don't know what is the other Fintek chip at 0x2f. Its it
> doesn't match any ID I could find in the datasheets, but it's similar
> enough to the F75121R and F75122R/RG ID that I'd bet for some VID
> and/or GPIO chip. My contact at Fintek told me it was a "power
> control", I hope to have additional information soon. Maybe you can
> take a look at your motherboard again in the meantime.

This is some kind of "high-density" PC, i.e. it is hard to disassemble.
I was lucky that the first chip was easy to spot, but the second one
could be anywhere. I would suggest to postpone this to tomorrow.

"Power control" reminds me of something: Sometimes ACPI power off
doesn't work. Do you think this is a related problem?

> So, the good news is that we now know what hardware monitoring chip you
> have. This explains why the W83627THF chip was not reporting the values
> you were expecting.
> The bad news is that we have no driver for this chip at the moment.
> I've added it to our "New drivers" page, together with a few other
> Fintek chips. You'll have to wait for a driver to be written, or write
> it yourself. Any amount of support (work, money, hardware...) you can
> offer is likely to speed up the process.

Creating a driver on my own sounds pretty cool. Probably it is
allowed to use an existing driver as a template?



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