I'm experiencing something similar to #98 and #348. I have a M1 2020 MacBook air, same as in #348 and running nixos-apple-silicon with linux-asahi-7.0.8.
After boot the backlight brightness is stuck between two states, a dark one(0% normally) and light one(~35% normally) the dark one is only when backlight is set at 0%, any other value is the light state. This is fixed by suspending/hibernating/freezing and waking. After that backlight works as expected.
I didn't have this issue when nixos-apple-silicon was on linux-asahi-6.19.14 and below. I also used to experience this exact issue on asahi arch linux arm a while ago with a different wayland compositor and desktop manager. This was with an older kernel 6 version.
I'm experiencing something similar to #98 and #348. I have a M1 2020 MacBook air, same as in #348 and running nixos-apple-silicon with linux-asahi-7.0.8.
After boot the backlight brightness is stuck between two states, a dark one(0% normally) and light one(~35% normally) the dark one is only when backlight is set at 0%, any other value is the light state. This is fixed by suspending/hibernating/freezing and waking. After that backlight works as expected.
I didn't have this issue when nixos-apple-silicon was on linux-asahi-6.19.14 and below. I also used to experience this exact issue on asahi arch linux arm a while ago with a different wayland compositor and desktop manager. This was with an older kernel 6 version.