I raised the issue, but people seem to be ignoring that fact that igb_uio was broken by the introduction of UIO PCI generic in 2.0.
There are three options: 1. Remove IGB_UIO only use UIO PCI generic. Downside there is no MSI-X support for UIO PCI generic. 2. Revert UIO PCI generic support 3. Replace both of the above with something better. I am working on #3 but it will not be ready for 2.0.1 and there is no solution for users of 2.0 and any future stable code.