OpenHMD VS OpenHMD

What headset do you have? VR works great when it works, but the protocols on Linux don't play well with all headsets. If you have a Vive, Vive Pro, or Index, it should work well with SteamVR. Otherwise, you'll have to dig around and test yourself using something like OpenHMD or more likely Monado, which both have limited device support. In my search, I came across this page, which might help you out.

A quick search suggests that people have been struggling to get HP Reverb (and the G2) headset working in Linux, particularly with SteamVR. OpenHMD has this issue open currently, though with no recent activity. I don't own any VR headsets, so I won't be of much help.

Here A guy fixes the same issue by defining which port to use I think but running

This is called OpenHMD watch a video on it to see if you are interested https://github.com/OpenHMD/OpenHMD

Sadly it looks like they already got a dump of both the 8kX and the 5k+ a few years back with no progress from it, and the project has been in limbo since the last commit is from 2021

For WMR there's the OpenHMD project which gives only seated play, no motion tracking.

There are also Open Source driver for CV1 and a lot of other headsets with OpenHMD, those drivers however are mostly just 3DOF, which limits their usefulness.

https://github.com/OpenHMD/OpenHMD i used this to get my Oculus Rift CV1 "running". There are prebuilt packages in the AUR.

I modified the AUR package for openhmd to build your repo/branch instead. git+https://github.com/thaytan/OpenHMD.git#branch=rift-kalman-filter But the tracking is just as jittery as before and it's still just 3DOF. Is there any special compiler flags or something that need to be activated for 6DOF to work, or is it more likely that I just installed it wrong somehow?

Yes. Was developed by the same guy, in fact: https://github.com/thaytan/OpenHMD/tree/rift-kalman-filter

if they wanna stay with Oculus, they could give the CV1 a try, assuming they know how to setup the drivers for it to work on Linux. Thaytan on github has been working on and improving 6DOF tracking for the CV1 for a while now but is needing help with the tracking part of it to fix a few kinks. You can easily okay Beat Saber with it no problem. Should give it a look if you are interested. Thaytan has some youtube videos as well of some gameplay with it. The branch on github you would want to use is the rift-correspondence-search one. https://github.com/thaytan/OpenHMD/tree/rift-correspondence-search

Oculus Rift DK2/CV1: Try my positional tracking branches of OpenHMD (https://github.com/thaytan/OpenHMD/tree/rift-kalman-filter and https://noraisin.net/diary/?page_id=1048)

Slightly out of date tutorial: https://noraisin.net/diary/?page_id=1048 Github repo for the experimental support: https://github.com/thaytan/OpenHMD

I re-measured distortion parameters on my CV1 last month (https://github.com/thaytan/OpenHMD/commit/46d164a9) and they made things much clearer for me... maybe those parameters aren't right for your headset? Unfortunately it's a really hard thing to get a photo of for me to tell what you're seeing on your end.

OpenHMD Rift Kalman Filter: https://github.com/thaytan/OpenHMD/tree/rift-kalman-filter

https://github.com/ChristophHaag/SteamVR-OpenHMD with https://github.com/thaytan/OpenHMD/tree/rift-kalman-filter would work for now getting the CV1 working positionally tracked on Linux (currently in branch, still experimental but usable!) There are step by step install instructions on https://noraisin.net/diary/?p=1033