If your microphone input options are greyed out in the Sound settings, it could be due to the Steam VR virtual device being selected as the default audio input. Here are some steps you can try to resolve the issue:
- Restart the Device: Sometimes, simply restarting your HoloLens or Windows device can reset the audio settings.
- Check Device Connections: Ensure that your Jabra USB device is properly connected and recognized by the system. You may want to unplug and replug the device.
- Update Drivers: Make sure that the drivers for your Jabra USB device are up to date. You can check for updates through the device manager.
- Change Default Device: Go to Settings > System > Sound. If the options are still greyed out, try right-clicking on the sound icon in the taskbar, selecting Sounds, and then navigating to the Recording tab to set your Jabra device as the default.
- Check App Permissions: Ensure that the application you are using has permission to access the microphone. This can sometimes restrict the ability to change input devices.
- Uninstall Steam VR: If you do not need Steam VR, consider uninstalling it or disabling it to see if that allows you to regain control over the audio input settings.
If these steps do not resolve the issue, you may need to look into more specific troubleshooting steps for your device or consult the manufacturer's support resources.