Re: Fan resume not working on nx6325 without userland assistance

["Rafael J. Wysocki" <rjw@sisk.pl>]

On Tuesday, 22 of January 2008, Alexey Starikovskiy wrote:
> Does revert of 93ad7c07ad487b036add8760dabcc35666a550ef helps?

Yes, it does, thanks.


> Rafael J. Wysocki wrote:
> > On Tuesday, 22 of January 2008, Rafael J. Wysocki wrote:
> >> Hi,
> >>
> >> It turns out that the following script (from openSUSE 10.3):
> >>
> >> #############################################################
> >> # triggers the ACPI fan(s) after resume. Since ACPI drivers
> >> # have no suspend support, this is sometimes necessary.
> >> # see http://article.gmane.org/gmane.linux.acpi.devel/16643
> >> kick-fan()
> >> {
> >>         local FAN DUMMY STATE
> >>         for FAN in /proc/acpi/fan/*/state; do
> >>                 [ ! -e $FAN ] && continue
> >>                 read DUMMY STATE < $FAN
> >>                 if [ "$STATE" = "on" ]; then
> >>                         echo "kicking $FAN"
> >>                         echo -n 3 > $FAN
> >>                         echo -n 0 > $FAN
> >>                 fi
> >>         done
> >> }
> >>
> >> case $1 in
> >>         thaw|resume)
> >>                 kick-fan
> >>                 ;;
> >> esac
> >>
> >> is necessary to make the fan behave appropriately after a resume from RAM
> >> (I haven't checked resume from hibernation, but I guess the same thing happens)
> >> on HP nx6325 with 2.6.24-rc8 (and with previous kernels probably too).
> >>
> >> It wasn't needed at one point, so something has regressed.  Sigh.
> > 
> > Ah, I didn't say that thermal management is completely busted after a resume
> > if the fan is not kicked from the user land (using the above script).  Usually
> > the fan is 100% on (that corresponds to all ACPI "fans" being on), but once it
> > had gone off and I was unable to turn it on by any means (including rising the
> > temperature to a dangerous level).
> > 
> > Greetings,
> > Rafael
> 
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> 



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