Laptops :: Forcing acpi? Hoping to improve battery life...



Quote (roberts @ Sep. 15 2007,20:17)


# /etc/init.d/acpid start


ACPID started; I looked at Torsmo to see if it told me my power source and I noticed that my CPU usage was 110%! I unplug the power and it dropped back to 100%. It stays there even if I am not doing anything!.
Does acpiD only check at boot or should it drop back to minimum (600MHz) if I switch to battery?
As I am writing this, I have nothing else going on that I selected, but CPU usage is steady at 100%. Torsmo says there are 28 processes with 0 running.
Can someone help me to understand what is going on?

Try exiting and restarting X. Or Torsmo itself ("killall torsmo && nohup torsmo & ").
Quote
Does acpiD only check at boot or should it drop back to minimum (600MHz) if I switch to battery?

acpid monitors changes to acpi "sensors" (I'm not sure how often it checks for changes) - i.e. if you plug/unplug the power, acpid will register an acpi "event".

Once acpid detects an event, if there is an acpid script for that event (i.e. if power unplugged then slow cpu down) it will be executed, if there is no script for that event, then nothing will happen.

Do you have an acpid log in /var or /var/log that could give clues to the problem?


original here.