sleep mode battery improvement

AsahiLinux / linux

Linux kernel source tree

Other

2.16k stars 85 forks source link

sleep mode battery improvement #262

Open eslerm opened 4 months ago

eslerm commented 4 months ago

Asahi draws ~2% battery life per hour of sleep on a M2 (https://github.com/AsahiLinux/asahi-installer/issues/252). On macOS, this power draw is nearly 0% per hour.

This is an important feature, since putting an Asahi device into sleep mode over night requires ~20% battery and doing so often will greatly shorten the lifespan of a battery.

popey commented 4 months ago

On my m1 air running latest Ubuntu Asahi I did a test. Previously I had noticed significant drain while lid closed in my bag.

Yesterday:

12:19 100% suspended via gnome menu, lid open
17:22 98% woke with power button then slept again via gnome, lid open
23:06 90% woke again with power button, closed lid

Today:

08:06 76% opened lid

So it's a bit more thirsty than macOS for sure.

eslerm commented 4 months ago

I've noticed that if charge is at 100%, it will show no or little discharge during sleep for the first hour. I'm not sure why. If anyone is testing this, please run the test for multiple hours.