> > Does anybody know more about this? > > OpenGL/Mesa strikes again. What machines (Graphics cards/drivers) were > you getting the blank windows on Tran? I have the same problem on my > machine when I try to use NVidia's own drivers for my graphics card, but > it's OK when I use the Mesa libraries (v4 or 6) (though my X server is > still using the NVidia driver). It's at least nice to know that it's not > just me who has that problem! Hi Brian, We tried it on two computers, Phil's and mine, with the same result. All LINUX machines here have Matrox graphics card, G450. I am not sure which drivers are being used; I never have to install any extra driver to the system (not even from the Matrox CD), so, they are OpenGL driver, I guess. The software was compiled with Mesa6. Cheers, Tran