Hi Paul, I'm not in a position to debug the Tyan GS12, but from other posts to the lm-sensors mailing list there might be a possible resolution. Can you find out what the PWM frequency is for each motherboard? That might make the difference. I suggest you run the 'sensors-detect.pl' script and post the output here on the list as a starting point. Then we can point you to the maintainer of your driver, and they might have more information. David On 12/11/06, Paul Aviles <paul.aviles at nickelnetworks.com> wrote: > > > Anyone? > > > I have one for the masters... A few months I think back I posted a messages > about two indentical boards having different fan speeds for no reason. At > the end I changed the board with Tyan due to another problem and it solved > the issue so I attributed to being a deffective board. So the replacement > board came and after running it for maybe two months two days ago I woke up > around 4 AM and the unit was loud again.... This actually had happened to > all of the GS12 that I have. > > When you power a GS12 the fans are running at about 8000 rpms. So I use the > following lines to lower them to about 6000 and they make little noise > > #echo "-2" > /sys/bus/i2c/devices/0-002e/pwm1_auto_channels > #echo "-2" > /sys/bus/i2c/devices/0-002e/pwm2_auto_channels > #echo "-2" > /sys/bus/i2c/devices/0-002e/pwm3_auto_channels > > #echo "32" > /sys/bus/i2c/devices/0-002e/pwm1 > #echo "32" > /sys/bus/i2c/devices/0-002e/pwm2 > #echo "32" > /sys/bus/i2c/devices/0-002e/pwm3 > > Could it be that for some reason or another sensors somehow damages the > electronics of the board or is it that Tyan boards are so bad? Their tech > support is the worst I have seen, people there have no clue of anything. > Nobody according to them has ever reported this issue..... yeah.. and I am > the only soul in the planet so lucky to have 7 identical systems (cpu, > memory, hd and OS) and all 7 act differently!! > > The systems always have the same load, and the temperature has actually gone > down due to the cold fronts so is not an issue with usage or real > temperature. > Any ideas as to what can cause the pwm of one or two of the fans to go crazy > after a while? > > Regards, > > Paul > > _______________________________________________ > lm-sensors mailing list > lm-sensors at lm-sensors.org > http://lists.lm-sensors.org/mailman/listinfo/lm-sensors > >
