I had the same issue with a "nVidia Corporation NV43 [GeForce 6600] (rev a2)" card (from lspci).
Adding Option "AddARGBGLXVisuals" "true" in xorg.conf solved the problem for me.
I had the same issue with a "nVidia Corporation NV43 [GeForce 6600] (rev a2)" card (from lspci).
Adding Option "AddARGBGLXVisuals" "true" in xorg.conf solved the problem for me.