improve cx_lowest logic

[Sean Bruno]

On Tue, 2012-07-10 at 07:27 -0700, Ian Smith wrote:
> I wonder if that explains why setting C3 on aforesaid T23 has no
> effect 
> (in terms of dev.cpu.0.cx_usage indicating any time spent in C3)
> unless 
> the machine happened to be booted up on battery, in which case C3 is 
> shown as working whenever its enabled, by power_profile or manually?
> 
> 

silly question, did you set these in /etc/rc.conf ??

performance_cx_lowest="LOW"
economy_cx_lowest="LOW"

Sean