Re: apm/hdparm/power-supply saga, latest installment
curious why you'd be so interested in doing all this i could never see
why people wanted to suspend/sleep a desktop system(a notebook i can
see..)
as far as the power supply fan is concerned, i had a 486 a while back
that did this. it had a temperature senstive fan, if the temp was above
XX the fan would turn on, if it got hotter the fan would spin faster..id
think this is what you should try to get, the fan should be smart enough
to turn on if there is a need.
there are probably still a buncha power supplies that can do this.
me, i keep all my systems on 24/7. i turn off the monitors to reduce
heat(my apt can get quite hot if they are on all the time when im not
using them). but the pcs themselves are on.
nate
Krzys Majewski wrote:
>
> --------------
> For the knowledgeable and impatient, there are two questions
> at the end of this post:
> 1) How to stop both the hard disk and the cpu fan at the same
> time?
> 2) How to stop the power supply fan?
> --------------
>
> OK here's the latest Re: putting my machine to sleep.
>
> First of all, what I was referring to as the "cpu fan" is not the
> cpu fan at all, but the power supply fan. It turns out that
> both apm -S (standby) and apm -s (suspend) do actually stop the cpu
> fan! Yay!
>
> Hdparm -y /dev/hda works. Sometimes the drive starts up again
> after a few seconds but most of the time it doesn't. Again,
> I'm mounting everything with sync,noatime.
>
> Hdparm -Y /dev/hda does not work:
>
> Sep 10 18:24:57 mi kernel: hda: irq timeout: status=0xd0 {
> Busy }
> Sep 10 18:24:59 mi kernel: ide0: reset: master: error (0x00?)
>
> My hard disk is a
> hda: WDC WD102BA, ATA DISK drive
> hda: WDC WD102BA, 9779MB w/2048kB Cache, CHS=1246/255/63
> Is it a bad one?
>
> In any case, I am now capable of shutting down the cpu fan,
> and stopping the hard disk.
>
> Problem #1: I can stop one or the other, but not both. Neither
> apm -S; hdparm -y /dev/hda
> nor
> hdparm -y /dev/hda; apm -S
> work. (The first one for obvious reasons; in the second case
> the drive starts up again but I'm not sure why, suggestions?)
>
> Problem #2: I don't know how to stop the power supply fan. Is
> this possible? Can I buy a special power supply which does
> this? What is so special about a power supply? Can I replace
> it with a couple of (fanless) transformers? Is there a
> Power-Supply-HOWTO?
>
> -chris
>
> --
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