930
Valve: HDMI Forum Continues to Block HDMI 2.1 for Linux
(www.heise.de)
This is a most excellent place for technology news and articles.
They've been refusing open HDMI 2.1 since 2017. I don't think that being afraid of Linux becoming the dominant gaming platform plays a role here; it's more likely that they're afraid people might find new ways to get at protected content.
Isn't getting at protected content pretty trivial anyway? At least that’s my impression from how easy it is to find basically anything.