Please add option to adjust output RGB range

[kq01526]

Hi,

when using X, it's possible to adjust the Intel driver's Broadcast RGB setting via xrandr like this:

xrandr --output OUTPUT --set "Broadcast RGB" "Full"

or:

xrandr --output OUTPUT --set "Broadcast RGB" "Limited 16:235"

or:

xrandr --output OUTPUT --set "Broadcast RGB" "Automatic"

Unfortunately the Intel driver now sets this to "Automatic" by default and "Automatic" doesn't really set it properly all of the time:

https://bugzilla.kernel.org/show_bug.cgi?id=94921

amdgpu and radeon apparently are also planned to get options to to adjust the RGB range / color space, see:

https://bugs.freedesktop.org/show_bug.cgi?id=83226

When asking on #wayland on the freenode IRC channel, I was told that such an option would need to be added to the corresponding Wayland compositor and that I should submit a feature request for the corresponding Wayland compositor.

So, could you pease add an option to adjust the RGB range?

Regards

[kq01526]

And there's no kernel parameter for it, see:

https://bugs.freedesktop.org/show_bug.cgi?id=96489

So if the Wayland compositor does not provide an option to adjust it, you're pretty much stuck.

I guess this is the list of all those "connector properties":

https://01.org/linuxgraphics/gfx-docs/drm/drm-kms-properties.html

?