0% GPU utilization with OpenGL applications

[SpoodyTheOne]

Gamemoderun does not make the program or game use the GPU in certain circumstances. I noticed this when i tried to play Factorio and Team Fortress 2, where mangohud reported 0% gpu utilization. Likewise DaVinci Resolve did not function until i switched from gamemoderun to prime-run. I suspected it might be because these 3 use OpenGL, so i tested glxgears with the command mangohud gamemoderun glxgears And sure enough, mangohud reported 0% gpu utilization. Running mangohud prime-run glxgears works as expected Running vkcube instead of glxgears shows the GPU being used

To Reproduce Steps used to reproduce the behavior:

1. Launch gamemod with mangohud gamemoderun glxgears
2. See that mangohud reports 0% gpu usage

Expected behavior Gamemoderun should provide gpu usage in the same manner as prime-run.

System Info:

• Arch Linux x86_64
• Linux 6.0.11-arch1-1
• GameMode Version 1.7-1

Additional context

mangohud gamemoderun glxgears

mangohud prime-run glxgears

mangohud gamemoderun vkcube

Any help would be greatly appreciated

[SpoodyTheOne]

Adding GAMEMODERUNEXEC="env __NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia __VK_LAYER_NV_optimus=NVIDIA_only" to /etc/environment fixed the issue

[SpoodyTheOne]

Nevermind, adding GAMEMODERUNEXEC="env __NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia __VK_LAYER_NV_optimus=NVIDIA_only" to /etc/environment breaks picom for some reason