[lm-sensors] SMSC Super I/O: unknown chip with ID 0x8902 (was: lm85 in Intel S3000AH case)

Andrew Voznytsa andrew.voznytsa at gmail.com
Mon Jan 14 15:47:48 CET 2008

More information on topic:


I found http://www.lm-sensors.org/ticket/2195 which is related to my problem
- looked over sensors-detect output and found


Some Super I/O chips may also contain sensors. We have to write to

standard I/O ports to probe them. This is usually safe.

Do you want to scan for Super I/O sensors? (YES/no):

Probing for Super-I/O at 0x2e/0x2f

Trying family `National Semiconductor'...                   No

Trying family `SMSC'...                                     Yes

Found unknown chip with ID 0x8902

Probing for Super-I/O at 0x4e/0x4f

Trying family `National Semiconductor'...                   No

Trying family `SMSC'...                                     No

Trying family `VIA/Winbond/Fintek'...                       No

Trying family `ITE'...                                      No


So is not this unknown chip with ID 0x8902 what is missing to support fans
5/6/etc?  If yes - could someone drop some light on topic when to expect it

Andrew Voznytsa



From: Andrew Voznytsa [mailto:andrew.voznytsa at gmail.com] 
Sent: Sunday, January 13, 2008 12:28 AM
To: 'lm-sensors at lm-sensors.org'
Subject: lm85 in Intel S3000AH case


Hi guys,


Just installed lm-sensors (2.10.4 and 3.0.0) on S3000AH-based system (Linux
version 2.6.23-gentoo-r3 (root at farm) (gcc version 4.1.2 (Gentoo 4.1.2 p1.0

.2)), x86_64) - works fine except lm-sensors does not show fans 5 and 6. Is
it fixable? (I'd leave my chassis fan connected to 5th socket and do not
reconnect it to 2-4)


Here is part of sensors-detect output


  Detects correctly:

  * Bus `SMBus I801 adapter at 3000'

    Busdriver `i2c-i801', I2C address 0x2e

    Chip `SMSC EMC6D100, EMC6D101 or EMC6D102' (confidence: 7)


And sensors output:



Adapter: SMBus I801 adapter at 3000

V1.5:        +2.29 V  (min =  +0.00 V, max =  +3.32 V)

VCore:       +1.14 V  (min =  +0.00 V, max =  +2.99 V)

V3.3:        +3.35 V  (min =  +0.00 V, max =  +4.38 V)

V5:          +1.51 V  (min =  +0.00 V, max =  +6.64 V)

V12:        +12.81 V  (min =  +0.00 V, max = +15.94 V)

CPU_Fan:    1769 RPM  (min =  720 RPM)

fan2:          0 RPM  (min =  720 RPM)

fan3:          0 RPM  (min =  720 RPM)

fan4:          0 RPM  (min =  720 RPM)

CPU Temp:    -63.0 C  (low  = -127.0 C, high = +127.0 C)

Board Temp:  +39.0 C  (low  = -127.0 C, high = +127.0 C)

DIMM Temp:   +29.0 C  (low  = -127.0 C, high = +127.0 C)

cpu0_vid:   +0.000 V

Best regards,
Andrew Voznytsa


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lm-sensors.org/pipermail/lm-sensors/attachments/20080114/0a289c92/attachment.html>

More information about the lm-sensors mailing list