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I've installed correctly the nvidia 331 drivers in my ubuntu 64bit, but when i open a game in steam i see this error: Could not find required OpenGL entry point 'glColorMaskIndexedEXT' nvidia 331

Any solutions?

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What procedure did you follow in order to install 331 ? – NikTh Nov 23 '13 at 11:27
What is your graphics card? It is possible there are some incompatabilities with Nvidia 331 that we need to know about. – Dillmo Nov 23 '13 at 12:48
I'm seeing the same issue. I installed the 331 driver via the xorg-edgers PPA. – dutchie Jan 1 '14 at 14:56
possible duplicate of OpenGL problems with steam – Andrea Corbellini Aug 15 '15 at 14:07

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