Fan control issues (fan stuck at 257 RPM) with Thinkpad Yoga S1

[Ernest Doub]

Have you checked the BIOS settings for the fan?
If the low level setting somehow got changed to a constant speed number no
amount of fiddling with higher level settings will change it.
Ed
On the Mojave

- - - - -

- "Authority that can not be questioned is tyranny" - Sir Terry Pratchett

-  *Nothing in the world is more dangerous than sincere ignorance and
conscientious stupidity.*   Martin Luther King Jr., Strength to Love, 1963


On Mon, May 23, 2016 at 2:00 AM, Thomas SIMON <ubuntu.oothjz at fastmail.fm>
wrote:

> Hello Colin,
>
> It seems that the fan starts up immediately when booting, well I can
> hear the fan test at POST screen and then as soon as I'm on Ubuntu and
> launch Psensor, it shows the fan at 257 RPM which would be consistent
> with the "level 1" (on /proc/acpi/ibm/fan, see the link in the first
> email I sent) since it would always be constant regardless of other
> conditions
>
> Thanks a lot,
>
> > > Dear all,
> > >
> > > Would you be able to advise on a fan issue that I've noticed with my
> > > computer (Lenovo Yoga S1)? I've posted a full description on
> > > askubuntu.com
> > > (
> https://askubuntu.com/questions/775964/fan-stuck-at-257-rpm-thinkpad-yoga-s1-and-ubuntu-16-04
> )
> > > but in short, I've tried all solutions I've found on the internet to
> try
> > > to manually set my fan at another speed since it seems the automatic
> > > control doesn't work.
> >
> > Does the fan start immediately on booting, or does it work up to that
> > speed over a period?
> >
> > If it works up to it does system monitor (or top in a terminal) show
> > that the processor is being hogged?
> >
> > Colin
> >
> > >
> > > Indeed, the fan never seem to change speed, on 16.04, I think it used
> to
> > > change fine on previous versions, but I can't remember with any
> > > certainty. At any rate, I can't manually change the speed of the fan
> and
> > > I think I've pretty much tried all solutions (at least all easy ones or
> > > that didn't required in-depth knowledge of modules & linux kernel).
> > >
> > > Thanks a lot in advance,
> > >
> > > Thomas
> > >
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