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Bug#594952: linux-image doesn't work properly with Pentium M CPU

On Tue, 2010-08-31 at 12:11 +0700, Alexey wrote:
> Package: linux-image-2.6-686
> Version: 2.6.32+28
> Computer: Fujitsu-Siemens AMILO L7300
> The fact that acpi-cpufreq is not working properly with Dothan CPU's.

I don't think that's true.  It really depends on whether the BIOS
provides correct information about the available frequencies.

> FATAL: Error inserting acpi_cpufreq: No such device

Please try creating the file /etc/modprobe.d/processor-ppc.conf
containing the text:

    options processor ignore_ppc=1

and then reboot.

> On Ubuntu Karmic/Jaunty all works fine. It uses speedstep_centrino
> driver, which is deprecated, but works with BIOS which have broken
> voltage tables..
> Link to Ubuntu Patch:
> http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-maverick.git;a=blobdiff;f=arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c;h=ee4e9f8050752923f9671f61ffbea662bc9ad12a;hp=9b1ff37de46ae6a729f48d2d94ad30548806884d;hb=23120eb5ae5a12924565e8af3d946a015e1caaf9;hpb=215cc71ef0b26b9434404f387681d9bd173d2434

This doesn't seem like a good idea, and it has not been accepted by the
upstream developers.


Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.

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