Ubuntu finally supports HDR in 25.04, I've had a HDR monitor for several years but never been able to use that feature.
Anyway, tested it out on the Live CD, it just made vibrant colours become washed out. HDR is complex and weird, it's like a standard implementing multiple different things at once where the end result is most things look worse or burn your irises with brightness. Doesn't help that a monitor can implement only parts of the standard and still advertise as "HDR".
I've heard it's better if your HDR supports True Black, like an OLED, otherwise doesn't seem to be worth it, though there's probably more nuance to it than that.
#hdr #linux #gnome #ubuntu #ubuntu25