[Lenovo non-ThinkPad series] Support for battery conservation mode

[NicolasSchuler]

Lately I'm switched from Windows to Manjaro (Linux) with my Lenovo Yoga 720. In Windows the laptop was running the Lenovo Vantage Software, with this I could turn on the "battery conservation mode" on my Laptop. Now I've searched kind a like through the whole internet trying to find a solution for Linux. The closest thing also related to Lenovo is tlp. In the documentation it is well mentioned that this feature is only available on thinkpads, but nervertheless I've tried it out, with no success. It would be great if tlp would be able to enable the battery conservation mode on any Lenovo Laptop who can run the Lenovo Vantage Software with battery conservation mode option available.

[linrunner]

Thanks for your suggestion. This is not possible without a kernel driver, see FAQ.

[whenov]

It is possible with the ideapad_laptop driver now. On my laptop (Lenovo Legion 5), I can turn on the battery conservation mode by echo 1 > /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode.

[linrunner]

@whenov : thanks. Can you add the full output of

 tlp-stat 

for reference? Via https://gist.github.com/ please.

[whenov]

@linrunner Sure, here it is: https://gist.github.com/whenov/72069cfc2bcd8b3e76a67e9035b9ec68

[linrunner]

I would expect the file under /sys/devices/platform/ideapad_acpi/ also. May i see

ls -lR /sys/devices/platform/ideapad_acpi

(also via https://gist.github.com/)

[whenov]

@linrunner It appears I don't have this directory: https://gist.github.com/whenov/a4c783e930bea6b8c65459c7167221a1

[linrunner]

The wait is over: the stop charge threshold is implemented for 1.4.

Please participate in the alpha test. All necessary information is here.

Have fun.