"Christian" == Christian Luijten <[EMAIL PROTECTED]> writes:
Christian> Hi, I've installed Debian on my PowerMac7,3 a few days
Christian> ago (thanks again, Sven) and it seems that it is louder
Christian> than it is under OS X. A quick look inside showed that
Christian> the two front CPU fans are blowing at full power,
Christian> whereas on OS X they would be blowing at a fraction of
Christian> this speed.
I don't seem to see this problem (Dual 2Ghz PowerMac7,3), but I have
two other computers often running which are much noisier. You can
actually look at the details in /sys/devices/temprature/ if I remember
correctly. You should be able to track the fan speed over a period of
time.
Christian> Are the speeds user-adjustable or are they fiddling
Christian> with constants in the driver or how can they be
Christian> controlled, if at all?
I don't believe there is a way to control them. You can look in the
kernel source drivers/macintosh/therm_pm72.c file if you want details:
it looks like a PID controller algorithm with fixed constants.
Christian> Would it be possible to turn all fans off for a few
Christian> seconds and turn them on one by one? I have a strange
Christian> noise coming from the case which I hope to pinpoint.
Perhaps you need to remount the pexiglass cover? That did it for me :-)
Cheers!
Shyamal
