From: bugzilla-daemon@bugzilla.kernel.org
To: cpufreq@vger.kernel.org
Subject: [Bug 83151] New: Intel Turbo can't be disabled/enabled under certain condictions
Date: Sun, 24 Aug 2014 19:26:46 +0000 [thread overview]
Message-ID: <bug-83151-12968@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=83151
Bug ID: 83151
Summary: Intel Turbo can't be disabled/enabled under certain
condictions
Product: Power Management
Version: 2.5
Kernel Version: 3.16
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: cpufreq
Assignee: cpufreq@vger.kernel.org
Reporter: gabriele.mzt@gmail.com
Regression: No
On my laptop (Dell XPS 13 9333) MSR_IA32_MISC_ENABLE_TURBO_DISABLE is 0 when AC
is present, 1 otherwise.
Because of this, setting turbo_disabled on init leads to some issues:
* If I turn on the laptop while the AC is present, the sysfs interface always
allows me to change the state of no_turbo. However, the changes are only
effective when the AC is present.
* If I turn on the laptop while on battery, the sysfs interface doesn't allow
me to change the state of no_turbo. That means I'm not able to disable it when
it's automatically enabled when I plug the AC.
Note that I don't have the possibility to disable Intel Turbo from the BIOS
settings.
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next reply other threads:[~2014-08-24 19:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-24 19:26 bugzilla-daemon [this message]
2014-08-25 11:35 ` [Bug 83151] Intel Turbo can't be disabled/enabled under certain condictions bugzilla-daemon
2014-08-27 17:24 ` bugzilla-daemon
2014-08-28 5:04 ` bugzilla-daemon
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