We've recently seen two separate types of issues, both related to the use of NVIDIA drivers in AutoCAD.
In the first issue, we found AutoCAD 2010 and AutoCAD 2010-based vertical products occasionally crashing while using MATCHPROP and a handful of other commands. This was traced back to the use of the NVIDIA Performance Driver.
In the second case, we have seen serious visual fidelity problems in AutoCAD 2011 when using the most recent AutoCAD 2011 OpenGL Performance Driver from NVIDIA. These issues can present themselves in one or more of the following ways:
- Incomplete or incorrect display of linetypes
- Incomplete display of the UCS icon
- 2D and 3D viewports not clipping correctly
- Incorrect object highlighting
- Gradients have lines showing through them
- Materials textures display as white objects
- Residual pixels left behind on display
In addition to these visual indications, you may also see that CPU usage is higher even when AutoCAD is idle.
NVIDIA has been made aware of these problems. Here are the technical solutions for both issues. The fix is the same for each: switch back to the Autodesk driver.
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