VDD Advanced Configuration

This page lists any advanced configuration that is possible with the virtual display driver currently.

Custom resolutions

Starting in driver version 0.37, you can add up to 5 custom resolutions to the display via the Windows Registry Editor. Each resolution definition must be added to the path below.

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Parsec\vdd

Each custom resolution should be in its own folder, with the folder name going from 0 to 4. In case those folders (keys) and values are not there, create them manually yourself by right clicking and going to 'New', then 'Key' or 'DWORD'.

Each definition must contain 3 DWORD values: width, height and hz (frequency). An example of the format being done correctly is shown below.

Because registry DWORD values are hexadecimal, when adding each value it is helpful to select the radio button to 'Decimal' so you can type the value normally. 

In order to apply the resolution, you must disconnect and reconnect to the host with virtual displays enabled. The resolutions will be available to be selected from the Windows display settings, but can also apply if "Use client resolution" is used on the host settings and a client with the same resolution joins.

Note that Parsec currently only supports streaming resolutions up to 3840x2160.

Select Parent GPU

Starting in driver version 0.45, you can now select which GPU the Parsec Virtual Display Driver attaches to.  This is most helpful when your Virtual Machine vendor includes a software video adapter as it's POST adapter.  Setting the Parsec Virtual Display adapter to use a physical GPU like the NVIDA or AMD card will improve reliability of the Parsec Virtual Display Adapter.

Visit the following Registry path on your system and add the specified key and value.

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\WUDF\Services\ParsecVDA\Parameters

Insert new DWORD with name PreferredRenderAdapterVendorId, then depending on your system hardware enter the following Vendor ID as hexadecimal in the Registry key value field.

To apply this change to the Parsec Virtual Display Adapter, either reboot the host or disable and enable the Virtual Display Adapter inside device manager.