Try to find out what chip you have. You can sometimes look on the mobo and/or manual to see. You can see which chips are supported from our web site. Some fans can be controlled, and others can't. Sometimes using an lm_sensors driver can override the setting set in Bios, so be careful. Phil On Wed, Jun 19, 2002 at 12:49:18AM +0100, Chris Rankin wrote: > Dear Supermicro representative, > > I have installed a thermal fan on my Supermicro > PIIIDME, but am not convinced that it is being > activated when the CPUs reach their threshold > temperature, as configured in the BIOS. Does the fan > need a driver for the operating system before it will > work? If so, then can you please provide me with > sufficient information about the motherboard to write > such a driver? I am running Linux 2.4.18, which > already provides a driver for the SMBus functionality > (should that be relevant). > > Please note that I am *not* asking Supermicro to > provide a driver, should one be required. I am merely > asking for sufficient hardware specifications for the > PIIIDME to allow me to write me own driver, which I > would then be able to release freely to the Linux > community. For example, would the driver need to do > much more than write values to a particular port to > turn the fan on and off? If so then could you tell me > which values and which port, please? > > Thank you, > Chris Rankin > > (I don't think that Linux relies upon the BIOS to a > great extent, and so I doubt whether any thermal-fan > controlling code in the BIOS would have a chance to > run. Unless this functionality is handled using > hard-wired circuitry on the motherboard itself? I > really hve no idea, here. Can you advise, please?) > > http://www2.lm-sensors.nu/~lm78/author.html > > > __________________________________________________ > Do You Yahoo!? > Everything you'll ever need on one web page > from News and Sport to Email and Music Charts > http://uk.my.yahoo.com -- Philip Edelbrock -- IS Manager -- Edge Design, Corvallis, OR phil at netroedge.com -- http://www.netroedge.com/~phil PGP F16: 01 D2 FD 01 B5 46 F4 F0 3A 8B 9D 7E 14 7F FB 7A