Ulra high latency spikes on linux mint

[Gabe18009]

[pxlwh]

Same issue here on CachyOS with an RTX 3060 Ti and Quest 2 over wired USB. I'm running 21.0.0-dev12 built from source, but the sawtooth pattern matches exactly. I'm unsure if you're using wired, but I'll post my findings anyways.

The cause is a Linux-specific desync recovery loop in server_openvr/src/lib.rs that fires RequestDriverResync() whenever game_time_latency > 250ms. A recent SteamVR update made vrcompositor frame timing unstable enough to hit that threshold constantly.

Fix that worked for me: switch SteamVR to the previous beta branch (Steam -> SteamVR -> Properties -> Betas).

Before:

After:

Full writeup with the root cause and config tuning for wired: https://blog.pax.moe/?slug=wired-quest-2-vr-on-linux

[luthis1124]

I also had this issue, fixed by reverting to previous SteamVR

Thanks!

[xwildx]

Same problem with Ubuntu 24.04 LTS and Mint 22.3. Reverting to previous SteamVR fixed problem.

Thanks.

[Coolsurf6]

Going to previous does fix, however once steamVR updates again we are basically all screwed.

Whatever is causing this defintiely needs to be looked at.

Confirmed on CachyOS.