Some feedback regarding power consumption on an older machine after enabling hpet

[Thomas Meyer]

Yuan Chao schrieb:
> On 8/18/07, Kent <kent at thor.arrrr.com> wrote:
>
>   
>> Rough averages of idle acpi readings with screen at half brightness...
>> 2.6.22-rc5 vanilla              22W     99% C2
>> 2.6.22-rc5-hrt1                 16W     99% C3 ~ 14ms avg
>> 2.6.22-rc5-hrt1-radeon-vblank   14W     97% C3 ~ 140ms avg
>>     
> The longer time CPU stays in C4 saves more power. It looks like for
> your case CPU mostly stays in C3 and I also have similar problem. I'm
> wondering if there's some patch can be applied to resolve this?
>
>
>   
Please, everybody, stop mixing up ACPI C-states and processor C-states!