Update: While not solved, I did more testing inside SteamVR itself.
Though counterintuitive, It turns out the graphics settings for the dashboard need to be set to high. I'm not sure what's going on behind the scenes for this to make a difference, but the static-snow and rendering issues for overlays and the desktop view go away only when the dashboard quality is on high - Auto (high) does not do it, only setting to actually high.
There is still static made of green squares around chaperone elements and the default controller models in the dome, but it is lessened.
One more area that is a complete mess is Half Life: Alyx. Every loading screen renders the left/right eye from two different perspectives that seemingly jump around at random. Everything is a bright green mess with no textures, just shaded green.
Close SteamVR
In your steam/config folder (on my system, it lives at ~/.steam/steam/config) locate steamvr.vrsettings
In the "steamvr" section, add the line
"enableLinuxVulkanAsync" : false,
It should look something like
"steamvr" : {
"analogGain" : <snip>,
"enableHomeApp" : false,
"enableLinuxVulkanAsync" : false,
"installID" : "<snip>",
<snip for brevity>
},
This disables Vulkan Async Reprojection, which may reduce performance and smoothness, but may get rid of the artifacts. If it doesn't resolve the issue, simply close SteamVR, remove that line, and start it back up.
I am experiencing the same issue, the above line seemed to have helped initially, but the green snow suddenly returned.
Are there any new insights on this?
Also having the same issue on RX 6600XT, toggling async reprojection makes no difference. Noise occurs on select elements: Big Picture elements on the SteamVR 1.x overlay, the SteamVR 2.0 overlay in its entirety, and interestingly Google Earth VR. Issues seem to stem from applications copying "desktop" components into VR view.
I'm using the latest radeon ICD, the amdvlk ICD has the same issue, just with much worse performance.
Nothing extracted yet.
Describe the bug
After replacing my GeForce 1060 with a Radeon RX 5500 XT, SteamVR now shows graphical glitches and some features no longer work entirely.
In several places, SteamVR shows flickering green static/snow. It is not consistent between eyes, the snow is different in both. In some cases, this is moving, dynamic snow. In others, it's a static image. A screenshot is attached of the static version. When in a VR application with no compositing/overlays, the static disappears completely.
The glitches appear in the following places:
None of this happened on the NVidia card; it happened when I swapped over to the Radeon.
To Reproduce
Launch SteamVR. This is the only required step to reproduce, as it happens instantly on load.
Expected behavior
No static around VR elements, and composited applications/windows to display.
System Information (please complete the following information):
Screenshots
Additional context
When this occurred, I installed the nightly update PPA for Mesa and Vulkan drivers, so all packages related to Mesa are likely up to date. I also installed the Radeon performance tuning app and set it to high, as a comment thread suggested. This did help overall graphical performance, but had zero effect on the green snow.
Note: Commenters who are also experiencing this issue are encouraged to include the "System Information" section in their replies.