Stabilising Linux Builds

[mikeskydev]

Making a thread to discuss testing of Linux + SteamVR Builds. It would be great to get it on the Steam store, but we're lacking in testers and people familiar with Linux VR at the moment.

Possibly relevant issues:
#67
#138

Most recent builds available direct on GitHub:
https://github.com/icosa-gallery/open-brush/releases/tag/1.0.0
Or itch:
https://openbrush.itch.io/openbrush

[jrtberlin]

Hi, I'm able to test things with SteamVR on Arch Linux. Is there a beta branch on Steam that I'm not aware of?

[mikeskydev]

Hey, thanks for offering! Not yet, but we could look at setting that up. How was your luck with the build from https://github.com/icosa-gallery/open-brush/releases/tag/1.0.0 or itch.io?

[jrtberlin]

The build seems to have good performance overall but crashes when I click the Audio Reactor icon on the left controller panel.

Build: OpenBrush Beta from itch.io
Linux: 5.16.2
Nvidia Driver: 495.46
SteamVR: beta 1.21.6

 ./OpenBrush          
Set current directory to /home/jrt/.config/itch/apps/openbrush
Found path: /home/jrt/.config/itch/apps/openbrush/OpenBrush
[1]    91529 abort (core dumped)  ./OpenBrush

After the crash, restarting OpenBrush results in a crash, even after deleting ~/Documents/OpenBrush.
Successful reopening requires a restart of SteamVR.

The log of the crash seems to relate to the Audio Reactor function:

#12 0x00000041cc73d8 in CSCore.CoreAudioAPI.MMDeviceEnumerator:CreateMmDeviceEnumerator ()

[mikeskydev]

Thanks for the logs, this really helps! Yeah I'm guessing that the system used for capturing audio wasn't designed to work for linux. We can probably patch that fairly quickly to at least not crash the app, getting audio reactivity working might take a bit longer though.

[jrtberlin]

Let me know if you need any specific testing.

[mikeskydev]

We are using OpenXR in v2.0, which unfortunately Unity has not shipped Linux support for yet. Please join us in raising an issue with Unity when we release 2.0!

We're also interested in testing the Windows OpenXR version through Wine/Proton, as I've heard this is possible, but we don't have much experience in this area. We'd love some feedback and testing in that regard.