Date: Sun, 17 Jul 2016 11:07:56 +0800 From: Erich Dollansky <erichsfreebsdlist@alogt.com> To: Yubin Ruan <ablacktshirt@gmail.com> Cc: Polytropon <freebsd@edvax.de>, freebsd-questions@freebsd.org Subject: Re: High CPU temperature and high fans level Message-ID: <20160717110756.27e3d480@X220.alogt.com> In-Reply-To: <578AC4E9.7080108@gmail.com> References: <CAO%2BPfDe_Bs=OyN39UxKpSGt1RnCKiYxAOFCW5P=VtmYmmtkGuw@mail.gmail.com> <20160717002508.591a61ce.freebsd@edvax.de> <578AC4E9.7080108@gmail.com>
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Hi, On Sun, 17 Jul 2016 07:36:09 +0800 Yubin Ruan <ablacktshirt@gmail.com> wrote: > On 2016=E5=B9=B407=E6=9C=8817=E6=97=A5 06:25, Polytropon wrote: > > On Sun, 17 Jul 2016 00:06:07 +0200, David Demelier wrote: =20 > >> 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? =20 > > > > 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. > > =20 >=20 > How to check whether the powerd configuration is right ? >=20 you need something like powerd_enable=3D"YES" powerd_flags=3D"-a hiadaptive -b hiadaptive" # set CPU frequency in /etc/rc.conf Check the manual for the possible flags. This are settings which do not provide the best result on a typical desktop but are a good start.=20 Erich
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