I am using Ubuntu Maverick on my main workstation. I have an AMD 6870 video card (http://www.asus.com/Graphics_Cards/AMD_Series/EAH6870_DC2DI2S1GD5/) with AMD’s drivers ( http://support.amd.com/us/gpudownload/linux/Pages/radeon_linux.aspx?type=2.4.1&product=2.4.1.3.42&lang=English ). Is it possible to have an AMD and an Nvidia video cards simultaneously in the same machine? I need to test GPGPU programs on both OpenCL/AMD and CUDA/Nvidia and do not want to have to test on two different machines. Thanks! Charles -- Charles Nadeau Ph.D. http://charlesnadeau.blogspot.com/