Changing the governor and/or forcing speeds with userspace has no effect
while on battery power:
r...@shaggy:/var/log# echo "ondemand" | sudo tee
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
ondemand
r...@shaggy:/var/log# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
ondemand
r...@shaggy:/var/log# echo "userspace" | sudo tee
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
userspace
r...@shaggy:/var/log# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
userspace
r...@shaggy:/var/log# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
800000
r...@shaggy:/var/log# echo "1066000" | sudo tee
/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
1066000
r...@shaggy:/var/log# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
800000
r...@shaggy:/var/log# echo "2133000" | sudo tee
/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
2133000
r...@shaggy:/var/log# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
800000
I tried building a custom kernel with CONFIG_THINKPAD_ACPI_DEBUG=y and
CONFIG_PM_DEBUG=y but I do not see any extra messages in any logs -
Should I be looking somewhere else for debug messages?
** Changed in: linux (Ubuntu)
Status: Incomplete => New
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cpu scaling not working properly
https://bugs.launchpad.net/bugs/381588
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