# Ubuntu – High power consumption through btusb and tick_sched_timer

batterydellpower-management

Recently I noticed that my laptops battery is very worse so I checked powertop for the power consumption.
Doesn't matter what I do. The the top processes are

Radio device: btusb
tick_sched_time


Together they consume almost 15-17 W of power.

What are these services and how can I fix this issue. My laptop is a Precision 5530 from Dell.

• If you are not using bluetooth (higher power consumption) you can simply turn it off.

To turn off bluetooth only temporarily, use rfkill:

$sudo rfkill block bluetooth  To permanently turn off bluetooth create a udev rule: $ sudo -H gedit /etc/udev/rules.d/50-bluetooth.rules


Then in the empty file, insert these lines:

# disable bluetooth
SUBSYSTEM=="rfkill", ATTR{type}=="bluetooth", ATTR{state}="0"


Save the file and exist.

Visit the link above for even more power saving tips.