Re: 2.6.27-rc1: critical thermal shutdown on thinkpad x60

From: Pavel Machek
Date: Wed Aug 13 2008 - 16:54:20 EST


> > > thinkpad-acpi will regard 128 and -128 as invalid sensors, because that's
> > > how they are used in some BIOSes (and ECs). We used to bother only with
> > > -128, but Lenovo did something wierd in one of the EC firmwares and I had to
> > > add +128 too. That masks the "help, I am melting" reading.
> >
> > It was simpler than that. I did not pass "fan_control=1" option.
> >
> > (Actually... I do not think that option is needed. If fan control is
> > known to work, it should be just enabled...)
>
> I require explicit user permission to activate knobs that are that
> dangerous, and actively frowned upon by the manufacturer.

Well, it is not more dangerous than 2.6.26.2 (will overheat your
thinkpad, causing critical shutdown). Plus, acpi fans are
controllable/overridable by default from /proc, and 'echo "level 7" >
fan' is not something you can do accidentally...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/