Wayland: How to get xrandr-style brightness control on Wayland ? (software, not DDC/CI)

[omnitrix9991]

Hey,

I really like the new Wayland session, it's super fast! But I'm missing software brightness control.

My problem:
My monitors' minimum brightness is very bright, so I need software dimming to make them comfortable at night.

What I used to do:
I used to use this app for the X11 session: https://github.com/panosx2/brightness
It used xrandr to adjust brightness and worked perfectly.

What I've tried on Wayland:

• My old brightness app doesn't work anymore
• wlsunset - gives error "compositor doesn't support wlr-gamma-control"
• redshift - fails with "Failed to start adjustment method wayland"
• gammastep - same error

My question:
Is there any way to get software brightness control working on Wayland? Or is this just not possible yet with Gala?

I don't want to go back to X11, but I really need this feature.

Thanks!

[lenemter]

Unfortunately, it's not possible with Gala at the moment. There's no stable Wayland protocol for manipulating monitor gamma, and I'm not sure whether we want to implement wl-roots' one

[omnitrix9991]

That's unfortunate - it's really the thing I miss from X11. My monitors' minimum hardware brightness is just too bright for comfortable night use.