Comfy Launch failure

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

Successful completion of installation process leading to display of a comfyUI window.

### Actual Behavior

The process stalls with an error 803.

Following the instructions on the web site
https://comfyui-wiki.com/en/install/install-comfyui/install-comfyui-on-linux

The command "comfy install" results in this warning message in red, output twice

"The recent workspace /home/eng883/comfy/ComfyUI is not a valid ComfyUI path."

Carrying on anywy, the command "comfy launch'" gives an error 803 . Here is the relevant section of output to the terminal:-

"Traceback (most recent call last):
File "/home/eng883/comfy/ComfyUI/main.py", line 149, in
import execution
File "/home/eng883/comfy/ComfyUI/execution.py", line 15, in
import comfy.model_management
File "/home/eng883/comfy/ComfyUI/comfy/model_management.py", line 237, in
total_vram = get_total_memory(get_torch_device()) / (1024 * 1024)
^^^^^^^^^^^^^^^^^^
File "/home/eng883/comfy/ComfyUI/comfy/model_management.py", line 187, in get_torch_device
return torch.device(torch.cuda.current_device())
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/eng883/comfy-env/lib/python3.12/site-packages/torch/cuda/__init__.py", line 1069, in current_device
_lazy_init()
File "/home/eng883/comfy-env/lib/python3.12/site-packages/torch/cuda/__init__.py", line 410, in _lazy_init
torch._C._cuda_init()
RuntimeError: Unexpected error from cudaGetDeviceCount(). Did you run some cuda functions before calling NumCudaDevices() that might have already set an error? Error 803: system has unsupported display driver / cuda driver combination
"

### Steps to Reproduce

Follow the steps to install comfyI for Ubuntu given on this web site
https://comfyui-wiki.com/en/install/install-comfyui/install-comfyui-on-linux

### Debug Logs

```powershell
no log files produced. Terminal output reproduced above
```

### Other

I have not progressed to the point where there might be an issue with custom nodes.
This error occurs both with GPU and CPU only options.