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I'm trying to install DraftSight on Ubuntu64 12.04 LTS with an on-board AMD graphics processor. I suspect I'm having a driver problem because when I first installed it, it would lock up my computer as soon as I opened DraftSight. I updated my graphics driver and now I can work in it for several minutes before it locks up the computer. There doesn't seem to be one action that I can repeat to recreate the problem and it completely locks the computer, no mouse or keyboard interaction. (ctrl+T, ctrl+alt+del do nothing)

I'm not even sure where to start on figuring this out but here's the output of glxinfo and lspci

$ glxinfo | grep OpenGL
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: ATI Radeon HD 4200
OpenGL version string: 3.3.11627 Compatibility Profile Context
OpenGL shading language version string: 3.30
OpenGL extensions:

$ lspci | grep VGA
01:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RS880 [Radeon HD 4200]
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