</colgroup

Applies To
Product(s):	AutoPIPE
Version(s):	ALL;
Area:	Startup
Date Logged & Current Version	April 2025 24.00.02.243

Problem:

While using WinDBG application, AutoPIPE was opened,

The following error occurred:

*** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\Windows\SYSTEM32\vm3dgl64.dll

Solution:

This issue is directly related to installing AutoPIPE on a Citrix server inside of a virtual machine (VM). Adter running a WinDBG and revewing the log file it was apparent that the error was linked to a specific DLL - vm3dgl64.dll

Performing a google search for this DLL found a reference here that resolved the issue.

Environment

VMware Tools 12.5

Cause

Llvmpipe which is used for OpenGL application is not unloading properly.

Resolution

This is a known issue and currently there is no resolution.

To workaround this issue set a system environment variable SVGA_ALLOW_LLVMPIPE=0

Below are the steps to set the variable.

Click Start or Windows button (or press Windows key in the keyboard).
In the Search box start typing System Environment Variable.
Click Edit the system environment variable from the search results.
In the System Properties window Advanced tab click 'Environment Variables...' button at bottom right.
In the System Variables section locate for the Path variable and click Edit... button to open the Edit System Variable window.
Enter the value in the 'Variable Value' box in the 'Edit System Variable' window and click OK to save the value back to Path variable.
Click OK to close the 'Environment Variables...' window.
Click OK or Cancel to close the 'System Properties' window.

The Path environment variable is now set.

Additional Information

- In few scenario, The application will crash even after adding the environment variable " SVGA_ALLOW_LLVMPIPE=0" on Windows VM.

- For those situation, ,Make sure to update the device display adaptor version to 9.17.9.4.

- - On Windows VM --------------- Go to Device Manager--------Display Adaptor -----------Right click on the adapter ------Properties ---------The driver Version should be 9.17.9.4.