Date: Sun, 17 Jul 2016 11:59:32 +0200 From: David Demelier <demelier.david@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: High CPU temperature and high fans level Message-ID: <CAO%2BPfDeLiavM%2BDQpvR0Sf=wG7NK6LByO7XddKED85WLNDAxCLA@mail.gmail.com> In-Reply-To: <20160717002508.591a61ce.freebsd@edvax.de> References: <CAO%2BPfDe_Bs=OyN39UxKpSGt1RnCKiYxAOFCW5P=VtmYmmtkGuw@mail.gmail.com> <20160717002508.591a61ce.freebsd@edvax.de>
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2016-07-17 0:25 GMT+02:00 Polytropon <freebsd@edvax.de>: > On Sun, 17 Jul 2016 00:06:07 +0200, David Demelier wrote: >> Hello, >> >> I was trying FreeBSD 10.3 on my laptop (hp probook 4510s) and was surprised >> to see high CPU temperature and fans running high. >> >> No apps running, I get a temperature of 57C in dev.cpu.x.temperature and >> fans run high (not able to get rpms). >> >> On a 4.6.3 Linux distro I get an average of 48C and fans are quite low. >> >> Both tests were kept in tty. No Xorg running just a boot and user login in >> console. >> >> Do you have any clue? > > Did you enable powerd? It can slow down the CPU when the system > is idle, and increase the CPU speed when needed. This should have > an effect on CPU temperature and fan speed. > Yes, I had powerd enabled, I tried -a adaptive, -a hiadaptive as suggested by Erich but it seems that only -a min has some little effect. I could get a temperature of 52C. I've tested back on Linux and I got an average much lower (41C). By the way the other sensors in hw.acpi.tz* are also much higher than Linux (using lm_sensors). The highest value is my tz5 which is at 78C almost 5 seconds after boot while the maximum tz value in Linux sensors is 55. I have no idea what's wrong. :( -- Demelier David
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