From: "Toralf Förster" <toralf.foerster@gmx.de>
To: linux-acpi@vger.kernel.org
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: 3.9.0 + CONFIG_X86_INTEL_PSTATE=y -> ThinkPad T420 with i5 lost ACPI functionality
Date: Fri, 03 May 2013 18:55:37 +0200 [thread overview]
Message-ID: <5183EC09.9080208@gmx.de> (raw)
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=y
That means, that a command like
$> echo 1 > /sys/devices/system/cpu/cpufreq/ondemand/ignore_nice_load
in /etc/rc.local is now no longer working.
A high fan + high temperature are the result, even if just the BOINC 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 ?
In the later case: How can I achieve the previous behaviour back ?
This issue might affect the RH EL kernel too [1] where I observed a similar behaviour.
[1] http://elrepo.org/bugs/view.php?id=379
--
MfG/Sincerely
Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3
next reply other threads:[~2013-05-03 16:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-03 16:55 Toralf Förster [this message]
2013-05-03 19:36 ` 3.9.0 + CONFIG_X86_INTEL_PSTATE=y -> ThinkPad T420 with i5 lost ACPI functionality Rafael J. Wysocki
2013-05-03 21:10 ` Dirk Brandewie
2013-05-03 21:26 ` Toralf Förster
2013-05-03 21:43 ` Dirk Brandewie
2013-05-04 7:57 ` Toralf Förster
2013-05-10 13:10 ` Rafael J. Wysocki
2013-05-13 16:43 ` Dirk Brandewie
2013-05-13 17:20 ` Toralf Förster
2013-05-13 17:57 ` Dirk Brandewie
2013-05-13 19:13 ` Toralf Förster
2013-05-13 19:24 ` Dirk Brandewie
2013-05-28 18:11 ` Toralf Förster
2013-07-07 8:44 ` Toralf Förster
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