Crash and graphical corruption with Navi on amdgpu

[Termuellinator]

I'm not sure if this is something to report here or over at mesa? When launching a vanilla multi-mc instance (1.12.2) with vivecraft, i either get a crash once the menu should be loaded. The console points towards dmsg and dmsg shows:

[20828.883939] [drm:amdgpu_syncobj_lookup_and_add_to_sync [amdgpu]] ERROR syncobj 17 failed to find fence @ 0 (-22)! [20828.883972] [drm:amdgpu_cs_ioctl [amdgpu]] ERROR Failed in the dependencies handling -22!

if this doesn't happen, then the menu looks fine (although the knuckles controlers constantly vibrate), but once a world is loaded, the screen (both in HMD and mirror) is basically white noise.

System: System Information (please complete the following information):

• Distribution: Manjaro KDE
• SteamVR version: 1.8.6
• Steam client version: 1569883362 from Sep 30
• Opted into Steam client beta?: yes
• Graphics driver version: Mesa 19.3.0-devel (git-3c966fd688) (LLVM 10.0.0) on 5700XT
• Gist for SteamVR System Information: https://gist.github.com/Termuellinator/be41f6abf92575447f03f01b48c4df0b

[dsalt]

I found this bug report while looking for anything with similar symptoms – I'm seeing similar problems on Polaris (RX 570). Bug report here, though I'm not certain where the actual bug is myself.