From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dirk Brandewie Subject: Re: 3.9.0 + CONFIG_X86_INTEL_PSTATE=y -> ThinkPad T420 with i5 lost ACPI functionality Date: Mon, 13 May 2013 09:43:18 -0700 Message-ID: <51911826.907@gmail.com> References: <5183EC09.9080208@gmx.de> <3715884.H8PIhhjRXL@vostro.rjw.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <3715884.H8PIhhjRXL@vostro.rjw.lan> Sender: linux-acpi-owner@vger.kernel.org To: "Rafael J. Wysocki" Cc: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= , Dirk Brandewie , linux-acpi@vger.kernel.org, Linux Kernel , Linux PM list , Dirk Brandewie List-Id: linux-pm@vger.kernel.org On 05/03/2013 12:36 PM, Rafael J. Wysocki wrote: > On Friday, May 03, 2013 06:55:37 PM Toralf F=C3=B6rster wrote: >> The following file doesn't exists at my Gentoo Linux >> /sys/devices/system/cpu/cpufreq/ondemand/ignore_nice_load >> in 3.9.0 if I activate CONFIG_X86_INTEL_PSTATE=3Dy >> >> That means, that a command like >> >> $> echo 1 > /sys/devices/system/cpu/cpufreq/ondemand/ignore_nice_loa= d >> >> in /etc/rc.local is now no longer working. >> A high fan + high temperature are the result, even if just the BOIN= C client >> is run with low prio (nice 19) in the back ground. >> >> Manually loading the missing module won't work too : >> >> $> modprobe acpi_cpufreq >> modprobe: ERROR: could not insert 'acpi_cpufreq': Device or resource= busy >> >> Is the behaviour a bug or a feature ? > > The thermal management problem is not an intentional outcome, definit= ely. > >> In the later case: How can I achieve the previous behaviour back ? >> I spent some more time looking for a solution to this you can get same = behavior by setting a config option in BOINC "Use at most X % CPU time" see: http://boinc.berkeley.edu/wiki/Local_preferences >> This issue might affect the RH EL kernel too [1] where I observed a = similar behaviour. >> >> >> [1] http://elrepo.org/bugs/view.php?id=3D379 > > Dirk, is this the problem we were talking about recently or something= else? > > Rafael > > -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html