TFA suggests ARM64 might be the answer. It's not that simple. Asahi Linux on Apple silicon still uses substantial energy when the lid is closed, compared to Mac

TFA suggests ARM64 might be the answer. It's not that simple. Asahi Linux on Apple silicon still uses substantial energy when the lid is closed, compared to MacOS on the same hardware. With Asahi you might get a couple of days of sleep before the battery dies but you definitely won't get a month.