Thread (34 messages) 34 messages, 6 authors, 2016-11-14

Re: v4.8-rc1: thinkpad x60: running at low frequency even during kernel build

From: Pavel Machek <hidden>
Date: 2016-11-05 12:23:03
Also in: linux-acpi, lkml, platform-driver-x86

Hi!
Under v4.8-rc, behaviour is different: bios_limit goes to 1GHz there
when temperature is around 84C at the thermal zone. That keeps
ibm/thermal temperatures under 90C, and no "thermal emergency"
messages in syslog.
Argh. So v4.9 thermal management does not work.

v4.8 passive thermal management works _too well_, keeping fan at cca
3200 rpm, far below 3700 rpm it can reach. CPU is getting throttled,
and fan is not even running at full speed.

I can manually control the fan with thinkpad_acpi.fan_control=1... I
guess I can write some scripts?
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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