A fresh install solved the problem. it therefore seems that the upgrade from 10.10 to 11.04 has an issues, probably conflicting Python versions:
Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/jockey/detection.py", line 947, in get_handlers inst = obj(backend) TypeError: __init__() takes exactly 3 arguments (2 given) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/775137 Title: Nvidia 96 driver failed to load in 11.04 Nvidia GeForce4 MX 4000 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs