linux-kernel - Re: i7-2620M: Clock always high when on battery

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Date:	Tue, 1 Jan 2013 15:30:23 -0500
From:	"devendra.aaru" <devendra.aaru@...il.com>
To:	Peter Senna Tschudin <peter.senna@...il.com>
Cc:	rob@...dley.net, andre.przywara@....com, rjw@...k.pl,
	linux-kernel@...r.kernel.org
Subject: Re: i7-2620M: Clock always high when on battery

On Tue, Jan 1, 2013 at 3:17 PM, Peter Senna Tschudin
<peter.senna@...il.com> wrote:
> I'm not sure if I'm emailing the right people. My problem is with
> dynamic clock and or power management.
>
> I'm using 3.6.10-2.fc17.x86_64 but the exact same problem happen with
> non Fedora Kernels like 3.7.1 and 3.6.11.
>
> I'm using Toshiba R830-10P notebook with i7-2620M cpu.
>
> The problem is that when I power on the notebook without the AC
> adapter the clock of all cores is always very close to 2,7GHz. It was
> expected that without load the clock would be around 800 Mhz. This
> issue is causing the notebook to get hot and reduces battery life. The
> same problem also happens when on AC power but it is uncommon.
>
> What can I do to diagnose the problem and collect more precise details?
>

would you mind trying this

echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

as root?

but before cat that file to see whats the current cpu governor.

> Peter
>
> --
> Peter
> --
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