It's been a little while since we heard progress on Monado, the free and open source XR (VR / AR) runtime for Linux but it has been progressing nicely with a big new feature added. Developer Mateo de Mayo had a six-month internship at Collabora, and decided to do a write up on this exciting enhancement for Monado.
Pretty tech-heavy stuff here, and not something for regular consumers to read through and think "ah yes, I understood all that". The basic gist is that Monado, on Linux, can now support XR devices that have cameras and an IMU (Inertial measurement unit) to provide 6DoF (inside-out) tracking utilizing other open source projects like Kimera-VIO, ORB-SLAM3, and Basalt.
Check out their example video in action, the video shows "an OpenXR application (bottom right), running on Monado, using a RealSense D455 as the data source (top left) and Basalt as the SLAM backend (top right)":
Collabora also continue hiring, so if you're after a job in open source and this kind of thing sounds like fun maybe it's time to send them your details.