IBM/Lenovo R60, power managment - battery life
I have notebook IBM/R60. On www is written that this NB can run on batter for 3, even more hours. But my max battery lifetime is abou 2:20. I have cpufreq (CPU cores at 1GHz instead 2GHz), wifi is off, brighness is at the lowest state.
Distro: Debian sid, branch amd64
Does anybody have same model of NB? or same problems?
or does anobody know some other "tricks" for save battery life?
ps: some other infos
$ cat /proc/acpi/battery/BAT0/state
capacity state: ok
charging state: discharging
present rate: 20187 mW
remaining capacity: 55550 mWh
present voltage: 12231 mV
$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
$ cat /proc/acpi/processor/CPU0/power
active state: C3
bus master activity: 00000000
C1: type[C1] promotion[C2] demotion[--] latency usage duration
C2: type[C2] promotion[C3] demotion[C1] latency usage duration
*C3: type[C3] promotion[--] demotion[C2] latency usage duration