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I wanted to set charging thresholds on my Ideapad which does not have the tight integration with TLP that my old Thinkpad, from which I took the SSD to connect to my Ideapad, so I looked here: https://askubuntu.com/a/1211506/806813

But my directories don't have that charge_control_end_threshold file and they seem to be looping per below.

base) nobu@nobu-ThinkPad-T420:/sys/class/power_supply/BAT0/device/power_supply/BAT0/device/power_supply/BAT0$ ls
alarm           energy_full_design  power_now      type
capacity        energy_now          present        uevent
capacity_level  hwmon1              serial_number  voltage_min_design
cycle_count     manufacturer        status         voltage_now
device          model_name          subsystem
energy_full     power               technology

Why is this?

mLstudent33
  • 829

1 Answers1

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The contents of /sys/class/power_supply is best considered API interfaces, not files. These can be different on every computer (even if they're the same model) depending on:

  • BIOS settings
  • battery firmware
  • hardware capabilities
  • hardware age
  • GRUB settings
  • etc. ...

Looking at the options that you have in your BAT0, you will not be able to set thresholds at this time. What I suggest is that you take a look in your BIOS under the "Power" options for something that will allow you to change the power profile.