The parent comment is not correct. The Index paired with SteamVR on Linux has a plethora of issues and sometimes doesn’t work at all. It’s usually possible to get it working through some combination of switching SteamVR versions and rebooting, but it’s never a guarantee and usually takes a good chunk of time to get sorted when it’s being temperamental.
To Valve’s credit, since that post they did implement base station power management and some DEs now implement Wayland’s DRM leasing protocol, and there’s a somewhat buggy async reproduction implementation in place (although it’s broken in SteamVR 2.0 onwards).