I've get around 6 hours on asahi linux. MacOS battery is at least twice as good - not sure since I've never ran out of battery on MacOS. Sleeping works on macOS so I always have to remember to turn off the laptop on linux. Good for taking notes though, the CPU dips to 40 FPS on desktop sometimes and can't play videos.
Thanks for answering. This is totally without hardware graphics acceleration, right? As my understanding is that gpu drivers are still an experimental work in progress.
If so, it’s pretty cool that you still get 6 hours even with that handicap. I’m excited to see how it looks once the GPU works well.
I read elsewhere on HN the other day that a PSCI API extension patch is awaiting upstream review to be merged into the Linux kernel and that power management would work better with that merged. May be an usable Asahilinux on M* MacBooks are not that far off..