cpufreq-detect.sh broken on PIV M?

Paul Sladen ubuntu at paul.sladen.org
Tue Sep 6 20:30:17 CDT 2005


On Tue, 6 Sep 2005, Jay Camp wrote:
> There's an outstanding bug here, but I believe the title is misleading
> http://bugzilla.ubuntu.com/show_bug.cgi?id=10676

ICH is an old BIOS interface for power control;  it allows just simple
settings to be passed.  In this case, 'speedstep-ich' is working because it
is a fallback method.  (Perhaps in a case caused by buggy ACPI).

One of the files that Windows comes with is a large override file for
machines with known-bug/workarounds;  about half of the entries are about
forcing SMI mode on particular models of machine.

The cause of 'speedstep-centrino' failing to work could be a little more
involved';  '-centrino' is the driver that is wanted, *but* it may
depend on fetching correct voltage/scaling tables via ACPI. If ACPI is
busted, then indirectly-----the speedstep module may not work.

The script should try '-smi' as second-choice if the first-choice module
fails to load;  it maybe that in Breezy, that regession not being
detected.

> model name : Intel(R) Pentium(R) M processor 1.60GHz
> model name : Intel(R) Pentium(R) 4 Mobile CPU 1.60GHz
> Is there another way to use a different identifier, such as model

Yes, ideally it should use the concatenation of the family:model:stepping
and then the string for final selection---However, that's not actually the
problem here, AFAICS.

	-Paul
-- 
The summer is familiar here.  Nottingham, GB










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