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OpenGL speed problems under bash vs. DOS on Dell m60


Cygwin OpenGL folks,
I have been having problems with the latest version of Cygwin on a Dell M60. I have a piece of Java (JOGL) based visualization code that works fine (renders at ~14 frames/second) on other machines, both laptops and desktops. On the M60 with the newest Cygwin the speed drops to 2 frames/second, when I run the code from bash. When I run the identical code from a DOS prompt, the code runs 7 times faster. It is as if under bash, the opengl does not realize that the nVidia card is there, and does everything in software. A further test shows that if I run a command shell (cmd) under bash, and then start up my code, the display runs as fast as it does under the DOS prompt.


Do you have any idea why this is likely to be the case. I would hate to give up using bash for my work.
--Rusty Bobrow
Division Scientist
BBN Technologies



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