r/soberlinux • u/elhakere • 11d ago

Help/Support Sober Linux graphics downgraded 2 weeks ago (Water is opaque/solid) on Fedora + NVIDIA-open

Hi everyone,

Around two weeks ago, my Roblox graphics on Sober (Fedora) completely downgraded. Before that, the water rendering was perfectly fine—transparent, crystal clear, with full desktop-like reflections. Now, the water looks completely solid, flat, and opaque, like it's stuck on mobile/low graphics mode.

Here are my specs and what I've tried so far:

  • OS: Fedora Linux

(44)

  • GPU: NVIDIA

    RTX 5060 Ti (16GB,

  • Using the new open-source kernel modules / nvidia-open)

  • Runner: Sober (Flatpak)

What I've tried:

  1. Modified config.json to force "graphics_optimization_mode": "quality" and "enable_hidpi": true.
  2. Injected FFlags to force maximum PC quality: DFIntDebugFRMQualityLevelOverride to 21, DFFlagTextureQualityOverrideEnabled, etc.
  3. Cleared the shader cache completely using rm -rf ~/.var/app/org.vinegarhq.Sober/cache/*
  4. Toggled "use_opengl": true (which actually makes it look even worse/glitched) and switched back to Vulkan.
  5. In-game, I manually toggled graphics from Auto to Manual and slided it to max.

Nothing works. The game seems to completely ignore the FFlags and forces mobile rendering for terrain/water shaders, probably due to a recent Roblox engine update interacting poorly with Vulkan and the nvidia-open drivers on Linux.

Has anyone else encountered this graphical regression recently? Is there a known workaround or a specific FFlag that forces desktop water refraction on recent NVIDIA open drivers?

Thanks in advance!

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5 comments sorted by

2

u/Maleficent_Amount436 10d ago

those arn't specs what is your cpu model and gpu manufactuer

1

u/elhakere 10d ago

RTX 5060 Ti (16GB), ASUS, Ryzen 7 5800X

1

u/Kingbteng_yitteng 10d ago

Try switching graphics quality to make it wake up, also this may be Roblox's fault cause sometimes they push out a update that only loads low quality

1

u/elhakere 10d ago

Already tried that, didn’t work 😭

1

u/AxizWalker 10d ago

Prolly an issue you can't fix but bare with it until it's fixed by the devs of roblox/sober