[Tfug] no cpu scaling lately on a core2 duo

[Tom Rini]

On Fri, Jan 27, 2012 at 3:33 PM, JD Rogers <rogersjd at gmail.com> wrote:
>>
>> First things first.  If you change to 'performance' do you go up to 2GHz?
>
> Good question. No, it stays at 1GHz. And the plot thickens, because  I
> just noticed /sys/devices/system/cpu/cpu*/cpufreq/bios_limit says
> 1GHz, but I know the bios is set to allow scaling. And again, I point
> to the fact that the speed does spike momentarily when I plug/unplug
> the AC.

So, there's your culprit.  The BIOS fills out part of the table
incorrectly, Linux obeys and Windows doesn't.  I haven't looked hard
enough to see if there's a workaround because for me I can live with
always max frequency (so I disabled speedstep in the BIOS).

-- 
Tom