[ltp] Re: lm_sensors and thinkpad

[Thomas Hood]

I relate my experiences with lm_sensors on the tpctl
home page http://panopticon.csustan.edu/tpctl/tpctlhome.htm .
I short, I was not able to access the LM75 digital thermometer
that IBM says is built in to ThinkPad 600s.

--
Thomas Hood

Fabrice Bellet wrote:
> What's the current status of the lm_sensors stuff on thinkpads ?
> Did you succeed in getting it working on your laptop ? If yes,
> what chipset has been detected (lm75, lm78 ..), on which
> model ? The spec sheets of the 770 models talks about a lm75
> chipset. So it should be possible to access sensor information,
> like processor temps and fan rotation speed.
> 
> On my 770Z, It only detects the eeprom module, which is supposed
> to provide an interface to access the eeprom on SDRAM DIMMS, via
> the SMBus. You can then read misc info about your memory
> chips : latency, delays, capacity, and so on.
> 
> Concurrently, although this may not be definitely linked :-)
> I discovered that the 188 and 189 error codes at boot time --that
> I already experienced several times-- mean : Bad EEPROM CRC :-(
> (The hardware maintenance manual is available in PDF format
> online on IBM web site, and is a great source a information
> on how to diagnose a hardware failure)
> The technician explained to me that this eeprom contains the motherboard
> serial number, and is checked at boot time. Might it be possible
> that this eeprom is accessed in a weird way by the lm_sensors stuff ?
> Any similar experiences ?
> 
> Fabrice
> ----- The Linux ThinkPad mailing list -----
> The linux-thinkpad mailing list home page is at:
> http://www.bm-soft.com/~bm/tp_mailing.html
----- The Linux ThinkPad mailing list -----
The linux-thinkpad mailing list home page is at:
http://www.bm-soft.com/~bm/tp_mailing.html