Curious from people who follow its development closely.
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
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No just whatever came from the Arch repo. I'm not entirely sure what version I'm on right now, but it's been broken for me for maybe 2-3 weeks. It's not the biggest deal and I'm used to unimportant features like that occasionally breaking.
Well that's a weird one then. It got released February 38th and took a couple days for Arch to get it. I had the washed out colors too but I didn't have any HDR before that. That's ~6 weeks ago so yeah it's probably 6.0.3, the last that came out about that 2-3 weeks ago. I guess you were one of the lucky ones it worked and then broke! With a bit of luck it'll be fixed for good on 6.1.
Any chance it's hardware dependent? First I'm hearing of this and I just toggled it off and on to be sure I wasn't seeing things - mine is definitely working. I'm all-Intel FWIW.
It works for most people but there's some issues with some monitors where the color saturation doesn't work well and result in washed out colors compared to SDR.
It will also output RGB into YUV buffers if you have a display that only supports YUV colorspaces, so you end up with a very green and reddish purpleish screen.
Initial HDR support was introduced in 6.0, and 6.1 is supposed to bring some fixes for the washed up colors. I haven't found a bug for the YUV stuff and didn't have time to do a proper bug report.
Ah makes sense, thanks for the additional info!