iGPU with 0 VRAM with Vulkan Runtime

[thetick1234567890]

Which version of LM Studio?
LM-Studio-0.3.9-6-x64.AppImage

Which operating system?
Linux

What is the bug?
Vulkan Runtime shows GPU but with 0 VRAM.

Can GTT memory be used with iGPU ? Update YES I see COMP engine very busy in amdgpu_top, so the GPU compute is working fine. This issue is just an issue with accurate reporting of GPU resources.

HP UEFI BIOS only allows choosing Auto, 256M, or 512M VRAM.

Various Vulkan apps work fine from https://github.com/SaschaWillems/Vulkan

Screenshots

Logs

Kernel 6.12.0-12-generic #12-Ubuntu SMP PREEMPT_DYNAMIC Wed Jan 22 16:36:37 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
iGPU with AMD Ryzen 5 5600U
Device: AMD Radeon Graphics (radeonsi, renoir, LLVM 19.1.1, DRM 3.59, 6.12.0-12-generic) (0x1638)
[ 3.157034] [drm] amdgpu: 512M of VRAM memory ready.
[ 3.157040] [drm] amdgpu: 7648M of GTT memory ready.

To Reproduce
Steps to reproduce the behavior:

1. Settings
2. Runtime
3. Pick Vulkan llama.ccp (Linux)
4. Hardware -- Shows 0 VRAM for GPU

[DimitriGilbert]

Same here but it does not matter, it runs fine.
On kernel 6.10 and later you have GPP memory (dynamic vram allocation) so just remember to set the gpu offload in the model settings (usually what I forget), Bob's your uncle ;)