Got error from NVIDIA API

[sina-masoud-ansari]

Hi all,

I've been following these step by step instructions for my HDK 1.3 using NVIDIA driver version 378.66 and get this error when trying to run the RenderManagerD3DPresentExample:

• RenderManagerD3D11Base::OpenDisplay(): Using display adapter NVIDIA GeForce GTX 970
• RenderManagerNVidiaD3D11: High-priority context cleared
• OSVR RenderManager Warning: Got error from NVIDIA API: NVAPI call returned -214 (hex: ffffff2a)
• [\<unrecognized>]
• Could not acquire display access for vendor ID 53838 for display 0
• Could not open display

The tracker works fine, but I can't get anything to show on the display in direct mode. Has anyone had a similar experience and found a solution?

Some additional details:

• The Configurator shows {"directModeEnabled": true} under the Rendering tab
• I selected "osvr_server_config.HDK13DirectMode.sample.json" under the Configurator Samples tab
• I used OSVR Control to update the firmware and used HDK1314-2-00-OLED.hex which seems to be the latest
• I'm running a desktop PC and using the HDMI port on the GPU

Cheers