Correct results for Intel CA810E mobo?

Jean Delvare khali at
Fri Aug 15 22:22:58 CEST 2003

> I've just completed my first installation of lm-sensors, and wonder if
> anyone can give me any feedback on the results. I'm installing this on
> a homebrew computer based on an Intel CA810E motherboard
> (
> tm). This system is running RedHat 9 and I installed lm-sensors using
> the RH9 packages at 
> The installation seemed to go well. One question I didn't understand
> was the instruction to: To load everything that is needed, add this to
> some /etc/rc* file:
> #----cut here----
> # I2C adapter drivers
> modprobe i2c-isa
> # I2C chip drivers
> modprobe smsc47m1
> # sleep 2 # optional
> /usr/local/bin/sensors -s # recommended
> #----cut here----
> I wasn't sure which rc file to put this into, the
> /etc/init.d/lm-sensors file, or some other one. Any guidance on this
> is appreciated.

I don't really now, since I don't use Red Hat. However, the script
proposes to generate a /etc/sysconfig/lm_sensors file. I *think* you
simply have to say yes to have the modules loaded at startup on a Red
Hat System.

> However, loading the modules manually seemed to work:
> [root at rhtest root]# modprobe i2c-isa
> [root at rhtest root]# modprobe smsc47m1
> [root at rhtest root]# /usr/local/bin/sensors -s # recommended
> -bash: /usr/local/bin/sensors: No such file or directory

Red Hat's packages install the tools in /usr, while we default to
/usr/local, thus the bad command. I'll tell Axel Thimm (the RPM builder)
about it.

> [root at rhtest root]# /usr/bin/sensors -s # recommended      
> [root at rhtest root]# sensors
> smsc47m1-isa-0800
> Adapter: ISA adapter
> Algorithm: ISA algorithm
> fan1:        0 RPM  (min = 5120 RPM, div = 1)          ALARM
> fan2:        0 RPM  (min = 5120 RPM, div = 1)          ALARM

OK, the modules may load, still I'm not convinced by the results...
Unless you have no fans, or they do not report their speeds. You may try
increasing the divisor setting.

> I was hoping to get temperature displays from the motherboard, and was
> disappointed that none showed up. I examined the CPU fan and saw that
> it only had two wires, red and black, and remember reading that only
> three wire fans can report their rpms.

Oh, OK, so that's normal you don't get the report.

> Is this pretty much all I can expect out of this motherboard? I tried
> searching the archives on '810' but didn't find any references to this
> motherboard. I know you all say in your FAQ that you don't support
> motherboards, only chips. I hope this question isn't out of line.

>From the datasheet, you should be able to load the i2c-i801 driver.
Didn't sensors-detect told you about that? Maybe there are other sensor
chips there.

You may provide the full sensors-detect script for analysis. Remember to
rmmod the smsc47m1 module before re-running the script.

Jean Delvare

More information about the lm-sensors mailing list