Scenario: A user reports that a CAD application is NOT launching in the assigned HDX 3D Pro Desktop OS machine. The user sees an error that indicates that a GPU could NOT be found. The host…

HDX 3D Pro policies configured in Citrix Studio enable the display remoting features for GPU-accelerated sessions, but they do not configure or assign a GPU at the hypervisor level where the VM runs.

The Lossless quality option in the Quality Control tool adjusts the visual encoding quality of the HDX display stream; it is a session display setting and has no effect on whether a GPU is physically assigned to the VM.

Creating a new machine catalog in Citrix Studio defines how virtual machines are provisioned and managed, but it does not assign or configure a physical or virtual GPU for existing or new VMs on the XenServer host.

XenServer uses the NVIDIA GRID or equivalent vGPU technology, which requires explicit creation of a virtual GPU object and its association with a specific VM via the xe vgpu-create vm-uuid=<uuid> command. Without this assignment, the VM has no GPU passthrough or virtual GPU, so applications such as CAD tools that require a GPU will fail with a 'GPU not found' error. Running this command links the physical GPU resource on the host to the target VM, making the GPU available inside the HDX 3D Pro desktop.