OpenGL “lost connection” Meaning

Updated 09/29/2021 10:10 AM

What does the OpenGL "lost connection" message mean?

I have seen this Event Log Message:

The NVIDIA OpenGL driver lost connection with the display driver due to exceeding the Windows Time-Out limit and is unable to continue.

The application must close.

What does it mean?

If you received this message from an application (in the Event Log or on a pop up message), the application was unable to continue rendering because the Microsoft Windows imposed time limit (TDR) was exceeded. This is normally the case when the workload sent to the graphics card is greater than what the graphics card can process in the normal alloted time of two seconds.

You can find more information on this page:

Timeout Detection and Recovery (TDR)

How can this be fixed?

Two possible solutions to try would be:

  1. Reduce the graphics workload if possible, such as by rendering to a lower resolution or by reducing the detail.
  2. If your graphics card is a factory overclocked graphics card, enable Debug Mode from the NVIDIA Control Panel by going into Help. If this option is greyed out, it means your card is running at NVIDIA reference clock speeds.

For advanced users, you may try increasing the timeout value to allow more time to complete more intensive rendering. Microsoft provides information on how to modify the Windows Registry to achieve this.

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