It looks like that there is a problem with the proprietary drivers in Ubuntu Natty, so the problem it is not with python-visual. Try running 'glxgears'.
[SOLUTION]
Ok, problem has been solved: I de-activated using "ATI/AMD proprietary
FGLRX graphics driver" and re-installed mesa-components, rebooted and
then glxgears as well as some of the pydy/examples-files runs great!
It looks like that there is a problem with the proprietary drivers in Ubuntu Natty, so the problem it is not with python-visual. Try running 'glxgears'.
In the message: http:// sourceforge. net/mailarchive /message. php?msg_ id=27461234 a workaround is provided:
[SOLUTION]
Ok, problem has been solved: I de-activated using "ATI/AMD proprietary
FGLRX graphics driver" and re-installed mesa-components, rebooted and
then glxgears as well as some of the pydy/examples-files runs great!