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24 lines
1.4 KiB
Plaintext
24 lines
1.4 KiB
Plaintext
# Sourced by uwsm before Hyprland starts.
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# Keep Hyprland on the AMD iGPU (Radeon 8060S, PCI c4:00.0). The Thunderbolt
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# eGPU (RTX 5060 Ti) drives no displays and is for compute only; without this,
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# aquamarine opens it as a second KMS device. cardN numbering shifts with eGPU
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# hotplug timing, so resolve the stable by-path link. Left unset if missing so
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# Hyprland still falls back to auto-detection.
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igpu=$(readlink -f /dev/dri/by-path/pci-0000:c4:00.0-card 2>/dev/null)
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[ -e "$igpu" ] && export AQ_DRM_DEVICES="$igpu"
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unset igpu
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# EGL through Mesa only, for Hyprland and every app in the session. glvnd
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# otherwise tries NVIDIA's vendor first (10_nvidia.json sorts before
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# 50_mesa.json), so the compositor and GL apps open /dev/nvidiactl even
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# though they render on the iGPU; when the eGPU drops off the bus, they
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# would be holding it. CUDA does not go through EGL and is unaffected.
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export __EGL_VENDOR_LIBRARY_FILENAMES=/usr/share/glvnd/egl_vendor.d/50_mesa.json
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# Vulkan through RADV only, same reasoning. The eGPU exists for LM Studio's
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# CUDA backend; its Vulkan backend surveying the NVIDIA ICD on first start
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# took the machine down (platform reset, no log) while CUDA work on the same
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# card (voxtype/parakeet) runs fine. Games and every other Vulkan app stay
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# on the iGPU. CUDA does not go through the Vulkan loader.
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export VK_DRIVER_FILES=/usr/share/vulkan/icd.d/radeon_icd.json
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