I recently setup an old Thinkpad T60 as a secondary desktop (via a docking station), but when I tried it, it was feeling sluggish and I soon figured that it was somehow stuck at 1GHz, even tho its processor can go up to 1.83GHz (it's a Core Duo T2400).
I'm running Debian stable on this machine and can't figure out how to let it use the higher frequency:
~# cd /sys/devices/system/cpu/cpu0/cpufreq cpu0/cpufreq# cat cpuinfo_max_freq 1833000 cpu0/cpufreq# cat scaling_available_frequencies 1833000 1333000 1000000 cpu0/cpufreq# cat scaling_max_freq 1000000 cpu0/cpufreq# echo 1833000 >scaling_max_freq; cat scaling_max_freq 1000000 cpu0/cpufreq#
As you can see, even though 1833000 should be a valid value, when I try to set it, it's immediately (re)set to 1GHz.
Who/what (re)sets it? Why? How can I override this?
[ I have seen Linux: Why does the CPU frequency fluctuate when using the performance governor?, but that seems to be another problem since my CPU is not modern enough to have pstates so it is using
The battery is old but still working:
% cat /sys/class/power_supply/BAT0/uevent POWER_SUPPLY_NAME=BAT0 POWER_SUPPLY_STATUS=Unknown POWER_SUPPLY_PRESENT=1 POWER_SUPPLY_TECHNOLOGY=Li-ion POWER_SUPPLY_CYCLE_COUNT=0 POWER_SUPPLY_VOLTAGE_MIN_DESIGN=10800000 POWER_SUPPLY_VOLTAGE_NOW=12133000 POWER_SUPPLY_POWER_NOW=0 POWER_SUPPLY_ENERGY_FULL_DESIGN=84240000 POWER_SUPPLY_ENERGY_FULL=75890000 POWER_SUPPLY_ENERGY_NOW=66910000 POWER_SUPPLY_CAPACITY=88 POWER_SUPPLY_CAPACITY_LEVEL=Normal POWER_SUPPLY_MODEL_NAME=92P1133 POWER_SUPPLY_MANUFACTURER=Panasonic POWER_SUPPLY_SERIAL_NUMBER= 379 %