Re: software fan control

[andy baxter <andy@earthsong.free-online.co.uk>]

Dale wrote:
> Hi,
>
> Have a look at a package called lm-sensors, it has a program bundled
> in it for controlling fans.
>
> HTHs
>
>   
Thanks. I've just found out that if I connect the case fan to the CPUFAN 
header on the motherboard (the CPU is passively cooled), I can use a 
BIOS feature which does the same thing. Sorry for not doing a bit more 
research before I posted.

andy
> 2009/8/15 andy baxter <andy@earthsong.free-online.co.uk>:
>   
> > Hi,
> >
> > I have just built a mini-itx box with a jetway J7F4 motherboard. It's great,
> > apart from the fan is a bit noisier than I had hoped - I bought it hoping
> > that it would be quiet enough to leave switched on all the time in my living
> > room, but it isn't. I've thought of just disconnecting the fan, as it seems
> > to run fairly cool even with the CPU at full load - around 35 deg C, but I
> > would rather not do this unless there's no alternative.
> >
> > Is there a way of telling the kernel to leave the fan switched off unless
> > the CPU temp goes above a certain value, say 50 deg C? I had a look through
> > /sys and found this directory:
> >
> > /sys/class/thermal/thermal_zone0
> > total 0
> > lrwxrwxrwx 1 root root    0 2009-08-14 21:17 cdev0 -> ../cooling_device1
> > -r--r--r-- 1 root root 4096 2009-08-14 21:17 cdev0_trip_point
> > lrwxrwxrwx 1 root root    0 2009-08-14 21:17 cdev1 -> ../cooling_device0
> > -r--r--r-- 1 root root 4096 2009-08-14 21:17 cdev1_trip_point
> > lrwxrwxrwx 1 root root    0 2009-08-14 20:56 device ->
> > ../../../devices/LNXSYSTM:00/LNXTHERM:00/LNXTHERM:01
> > -rw-r--r-- 1 root root 4096 2009-08-14 21:17 mode
> > drwxr-xr-x 2 root root    0 2009-08-14 21:16 power
> > lrwxrwxrwx 1 root root    0 2009-08-14 20:56 subsystem -> ../../thermal
> > -r--r--r-- 1 root root 4096 2009-08-14 21:17 temp
> > -r--r--r-- 1 root root 4096 2009-08-14 21:17 trip_point_0_temp
> > -r--r--r-- 1 root root 4096 2009-08-14 21:17 trip_point_0_type
> > -r--r--r-- 1 root root 4096 2009-08-14 21:17 trip_point_1_temp
> > -r--r--r-- 1 root root 4096 2009-08-14 21:17 trip_point_1_type
> > -r--r--r-- 1 root root 4096 2009-08-14 21:17 trip_point_2_temp
> > -r--r--r-- 1 root root 4096 2009-08-14 21:17 trip_point_2_type
> > -r--r--r-- 1 root root 4096 2009-08-14 21:16 type
> > -rw-r--r-- 1 root root 4096 2009-08-14 20:55 uevent
> >
> > There are also directories cooling_device0 and cooling_device1, both of
> > which contain the files 'type' (FAN), and 'cur_state' (1 for device 0, 0 for
> > device 1). I only have 1 fan connected, so I assume cooling_device0 is the
> > fan.
> >
> > Any suggestions as to where I should go from here?
> >
> > thanks,
> >
> > andy
> >
> >
> > --
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> >
> >     
>
>
>
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