On Sun, Sep 02, 2012 at 08:38:14PM -0400, Dan Merillat wrote:
> > Hmm, can you enable all the debug statements in the driver?
> >
> > Simply edit drivers/cpufreq/powernow-k8.c by adding
> >
> > #define DEBUG
>
> It didn't add anything new, got:
But it did, actually. The "trying to register..." is a pr_debug call for
example.
> [ 44.491795] powernow-k8: Found 1 AMD Athlon(tm) 64 X2 Dual Core Processor 4600+ (2 cpu cores) (version 2.20.00)
> [ 44.491852] trying to register driver powernow-k8
this is cpufreq_register_driver()
> [ 44.491893] adding CPU 0
> [ 44.491955] processor_perflib-0423 [4294967293] processor_get_performa: ACPI-based processor performance control unavailable
this is acpi_processor_register_performance called by powernow_k8_cpu_init_acpi
> [ 44.492103] register performance failed: bad ACPI data: -5
> (I added the return value to the debug)
Yep, cool. This tells us that it is -EIO which means
that acpi_processor_register_performance returns -EIO
after trying acpi_processor_get_performance_info. The "..
performance control unavailable" message above tells us that
acpi_processor_get_performance_info fails when trying to get the _PCT
handle.
So, to recheck: are you sure your "Cool'n'quiet" option in the BIOS is
enabled? If not, please enable it and retest.
Thanks.
--
Regards/Gruss,
Boris.
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