Arch Linux

angelsl

Member

Registered: 2017-05-28

Posts: 4

sysfs IdeaPad conservation mode switch

Hi,

I wrote a patch for the ideapad-laptop module to expose the conservation mode on (some?) IdeaPad laptops, based on my own IdeaPad U430p.

I've already sent the patch in to the drivers/platform/x86 mailing list, but it'd be good to have it tested on other IdeaPad laptops anyway before it's merged.

I've packaged it as ideapad-laptop-updated-dkms on the AUR. The switch is `conservation_mode`, probably located at

/sys/bus/acpi/devices/VPC2004:00/physical_node/conservation_mode

If you can't find it, try

find /sys -name conservation_mode

As with all sysfs switches, to check if conservation mode is on, read the file (`cat conservation_mode`); if 1 is returned it is on, and if 0 is returned, it is off. To turn on conservation mode, write a truthy value (e.g. '1') to the file, and to deactivate it, write a falsey value (e.g. '0').

Please let me know if you run into any issues with conservation mode only.

Last edited by angelsl (2017-05-28 12:12:17)