Other News about gaming on Linux

Artifacts and stuttering in Darktide on Linux (RX 480, RADV, Proton Experimental)

Reddit Linux_Gaming - 22. Oktober 2025 - 17:24

Hi everyone,

I'm trying to run Warhammer 40k: Darktide on Linux with my AMD RX 480 and I'm running into persistent graphical artifacts and stuttering. The game runs fine on Windows on the same machine, so I suspect this is a Linux driver or Vulkan/Proton issue.
For disclosure, I'm using chatgpt to troubleshoot and this post was also written by it 'cause english isn't my first language.

System details:

  • OS: Kubuntu 23.10 (up-to-date)
  • GPU: AMD Radeon RX 480 (Polaris10)
  • Drivers: Mesa 25.2.3, RADV + ACO backend
  • Proton version: Experimental
  • Vulkan ICDs: /usr/share/vulkan/icd.d/radeon_icd.x86_64.json
  • Environment variables used for testing:VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/radeon_icd.x86_64.json RADV_PERFTEST=aco DXVK_ASYNC=0 gamemoderun mangohud %command%

Symptoms:

  • Game launches successfully, GPU load is correct
  • OpenGL renderer: AMD Radeon RX 480 Graphics (radeonsi, polaris10, ACO, DRM 3.64, 6.17.0-5-generic)
  • Vulkan info shows RADV POLARIS10 as GPU 0
  • Persistent graphical artifacts (weird shading, see attached video)
  • Stuttering/framerate inconsistencies even with DXVK_ASYNC=0

What I've tried:

  • Forcing DX12 via Proton environment variables
  • Switching ACO / LLVM backends (RADV_PERFTEST=aco vs LLVM)
  • Clearing DXVK shader cache
  • Reinstalling mesa-vulkan-drivers (amd64 + i386) and libvulkan
  • Verifying GPU nodes (/dev/dri/) and amdgpu module loaded

Notes:

  • The warning terminator_CreateInstance: Received return code -3 from libvulkan_dzn.so appears, but RADV is correctly recognized and used
  • On Windows, the game runs perfectly on the same GPU

https://reddit.com/link/1odbb09/video/es1sskjzkowf1/player

Has anyone experienced similar issues with Polaris10 on RADV and DX12 games? Are there known workarounds to reduce artifacts or stuttering for DX12 titles like Darktide?

Thanks in advance for any advice!

submitted by /u/robbertocorrotto
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MARVEL Cosmic Invasion set for launch on December 1

Gaming on Linux - 22. Oktober 2025 - 17:16
Today, Tribute Games Inc. and Dotemu have confirmed the beat 'em up MARVEL Cosmic Invasion will officially launch on December 1st.

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Read the full article on GamingOnLinux.

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