From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Steigerwald Subject: Re: [REGRESSION] 3.15: Seems to turbo mode Intel Sandybridge Dual Core without need, overheating CPU Date: Tue, 10 Jun 2014 00:11:50 +0200 Message-ID: <31874206.p2BkN8t4Hy@merkaba> References: <1996399.buoKlNI5nG@merkaba> <4677478.c1YrKzctMH@merkaba> <1773550.hda5I1At4Q@vostro.rjw.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mondschein.lichtvoll.de ([194.150.191.11]:37106 "EHLO mail.lichtvoll.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751223AbaFIWLw convert rfc822-to-8bit (ORCPT ); Mon, 9 Jun 2014 18:11:52 -0400 In-Reply-To: <1773550.hda5I1At4Q@vostro.rjw.lan> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: "Rafael J. Wysocki" Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Am Dienstag, 10. Juni 2014, 00:20:20 schrieb Rafael J. Wysocki: > On Monday, June 09, 2014 11:41:40 PM Martin Steigerwald wrote: > > Am Montag, 9. Juni 2014, 23:33:43 schrieb Martin Steigerwald: > > > Hi! > > >=20 > > > Added linux-pm to Cc. Also reboots seems to fix up the condition: > > >=20 > > > merkaba:~> grep . /sys/devices/system/cpu/cpu[0-3]/cpufreq/cpuinf= o_cur_freq > > > /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq:830957 > > > /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq:819628 > > > /sys/devices/system/cpu/cpu2/cpufreq/cpuinfo_cur_freq:800000 > > > /sys/devices/system/cpu/cpu3/cpufreq/cpuinfo_cur_freq:813476 > > > merkaba:~> sensors = =20 > > > acpitz-virtual-0 > > > Adapter: Virtual device > > > temp1: +71.0=B0C (crit =3D +98.0=B0C) > > >=20 > > > coretemp-isa-0000 > > > Adapter: ISA adapter > > > Physical id 0: +71.0=B0C (high =3D +86.0=B0C, crit =3D +100.0=B0= C) > > > Core 0: +70.0=B0C (high =3D +86.0=B0C, crit =3D +100.0=B0= C) > > > Core 1: +71.0=B0C (high =3D +86.0=B0C, crit =3D +100.0=B0= C) > > >=20 > > > thinkpad-isa-0000 > > > Adapter: ISA adapter > > > fan1: 3137 R > > >=20 > > >=20 > > > Still hot in here and after reboot and login into KDE session the= re is quite > > > some CPU activity for a while. > > >=20 > > > But way better than before. > > >=20 > > > I can test whether this also happens with ACPI cpufreq driver. > > >=20 > > > I think I didn=B4t see this with 3.14. > >=20 > > Its not just me: > >=20 > > Please change intel_pstate default to disable > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1188647 >=20 > Did you test the 3.15-rc kernels? If so, do they have this problem t= oo? I think I saw this with 3.15-rc7 as well. Not so sure about 3.15-rc5. I now switched to acpi + ondemand governor which seems to work better, = as I posted. I still hit cpu throttling, but well its hot inside here. And m= aybe the fan also needs some cleaning. Anyway, need to get some sleep now. I can test with rc7, rc5 and probab= ly some older rc as I still have those available. Will take some time toug= h. Thanks, --=20 Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7