protonscr

Xalia crashes with "No displays available" on Optimus/PRIME setups with legacy Nvidia GPUs

protonclosed
ValveSoftware/Proton#9885 · opened 2026-06-18 by Valiant-0 · updated 2026-06-18 · 1 comments · github
VValiant-0 2026-06-18 github

System Information

  • Distro: EndeavourOS (rolling)
  • GPU: NVIDIA GeForce 940MX (GM107, pre-Turing)
  • Driver: nvidia-470xx 470.256.02 (legacy closed-source)
  • Optimus manager: optimus-manager in hybrid mode
  • Display server: X11

Issue
When launching Fallout 76 with Proton Experimental, the game immediately closes with the following error in Steam output:

Unhandled exception in Xalia:
System.ApplicationException: No displays available
at Xalia.Sdl.SdlSynchronizationContext.Init (SDL3.SDL+SDL_InitFlags flags)
at Xalia.MainClass.Main (System.String[] argv)

Steps to reproduce

  1. Optimus laptop with legacy Nvidia GPU using nvidia-470xx driver
  2. optimus-manager set to hybrid mode
  3. Launch any game with Proton Experimental
  4. Game immediately exits with Xalia display error

Workaround
Switching to Proton 7.0 or 8.0 (which predate Xalia) allows the game to launch and run normally.

Expected behavior
Xalia should either initialize correctly on PRIME/Optimus setups or fail gracefully without killing the game process.

Kkisak-valve maintainer 2026-06-18 github

Hello @Valiant-0. DXVK and VKD3D-Proton bundled with newer Proton currently requires the video driver provide Vulkan 1.3. Your video driver install provides Vulkan 1.2. Xalia falling over is a distraction from this bigger blocker.

The NVIDIA 580 series video driver should be the last series that supports your GPU.

Proton versions

Launch options