From: Corentin Chary <corentin.chary@gmail.com>
To: Fabio Comolli <fabio.comolli@gmail.com>
Cc: ACPI mailing list <linux-acpi@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Len Brown <lenb@kernel.org>
Subject: Re: Possible bug in eeepc-laptop.c - EeePC 900
Date: Wed, 10 Mar 2010 14:07:52 +0100 [thread overview]
Message-ID: <71cd59b01003100507q79878fdan98e53cb4e705d2c2@mail.gmail.com> (raw)
In-Reply-To: <b637ec0b1003091458j67efc62cg2c975e9e286f4b0b@mail.gmail.com>
On Tue, Mar 9, 2010 at 11:58 PM, Fabio Comolli <fabio.comolli@gmail.com> wrote:
> Hi.
> I have an EeePC 900 running 2.6.34-rc1.
>
> If I boot it on AC the cpu runs at full speed, 900MHz; if I boot it on
> battery it runs only at 630Mhz. Plugging / unplugging the AC does not
> change the cpu frequency. Only a reboot can change the situation.
>
> I already tried to echo 0 or 1 to the
> /sys/devices/platform/eeepc/cpufv file; no effects, even if the file
> changes its value.
>
> This is not a regression from 2.6.33: this behavior is also present in
> that version.
>
> Does this ring any bells? This is really annoying, especially when
> trying to watch a movie on battery. Also 3D apps show a 30%
> performance drop, as expected.
Can you change the frequency with cpufreq ?
Did you try all cpufv values (see cpufv_available file) ?
Is you bios up-to-date ?
--
Corentin Chary
http://xf.iksaif.net
next prev parent reply other threads:[~2010-03-10 13:07 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-09 22:58 Possible bug in eeepc-laptop.c - EeePC 900 Fabio Comolli
2010-03-10 13:07 ` Corentin Chary [this message]
2010-03-10 13:46 ` Fabio Comolli
2010-03-10 22:09 ` Fabio Comolli
2010-03-10 22:19 ` Fabio Comolli
-- strict thread matches above, loose matches on Subject: below --
2010-03-11 21:28 Fabio Comolli
2010-03-12 8:49 ` Corentin Chary
2010-03-12 20:07 ` Fabio Comolli
2010-03-13 9:16 ` Corentin Chary
2010-03-13 12:50 ` Fabio Comolli
2010-03-16 6:54 ` Corentin Chary
2010-03-16 20:31 ` Fabio Comolli
2010-03-17 8:22 ` Corentin Chary
2010-03-17 22:55 ` Fabio Comolli
2010-03-17 14:49 ` Alan Jenkins
2010-03-17 15:40 ` Fabio Comolli
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