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Message-ID: <71cd59b01003100507q79878fdan98e53cb4e705d2c2@mail.gmail.com> Date: Wed, 10 Mar 2010 14:07:52 +0100 From: Corentin Chary <corentin.chary@...il.com> To: Fabio Comolli <fabio.comolli@...il.com> Cc: ACPI mailing list <linux-acpi@...r.kernel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Len Brown <lenb@...nel.org> Subject: Re: Possible bug in eeepc-laptop.c - EeePC 900 On Tue, Mar 9, 2010 at 11:58 PM, Fabio Comolli <fabio.comolli@...il.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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