From: Phillip Susi <psusi@ubuntu.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: "linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>
Subject: Re: Using intel_pstate
Date: Sat, 22 Feb 2014 23:11:50 -0500 [thread overview]
Message-ID: <53097506.8020407@ubuntu.com> (raw)
In-Reply-To: <9891809.rXh9YKnm5H@vostro.rjw.lan>
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On 02/22/2014 08:23 PM, Rafael J. Wysocki wrote:
> On Saturday, February 22, 2014 05:48:46 PM Phillip Susi wrote:
>> The intel_pstate driver says it should be the preferred driver
>> on sandy bridge systems, but my system is using the acpi p state
>> driver instead. According to the cpufreq Makefile this appears
>> to be intended as it is placed first in the link order. Why is
>> this and how can I make sure the intel_pstate driver is used
>> instead?
>
> Do you have CONFIG_X86_INTEL_PSTATE=y set in your .config?
Nevermind.. turns out Ubuntu has a patch to disable it by default and
you have to explicitly pass intel_pstate=enable to turn it on.
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prev parent reply other threads:[~2014-02-23 4:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-22 22:48 Using intel_pstate Phillip Susi
2014-02-23 1:23 ` Rafael J. Wysocki
2014-02-23 4:11 ` Phillip Susi [this message]
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