I had VirtualBox running just fine but on the update to 11.04 it choked. I am running:
- dkms version 2.1.1.2-5ubuntu1
- virtualbox-ose-dkms v. 4.0.4-dfsg-1ubuntu4.1
- virtualbox-ose-qt v. 4.0.4-dfsg-1ubuntu4.1
- virtualbox-ose v. 4.0.4-dfsg-1ubuntu4.1
When I try to create a new machine or launch my existing machine, I get two alerts:
Kernel driver not installed (rc=-1908)
Please install the virtualbox-ose-dkms package and execute 'modprobe vboxdrv' as root.
I tried that and got an error: FATAL: Module vboxdrv not found.
The other alert just reads:
Failed to open a session for the virtual machine Foo. The virtual machine 'Foo' has terminated unexpectedly during startup with exit code 1.
Result Code: NS_ERROR_FAILURE (0x80004005) Component: Machine Interface: IMachine {662c175e-a69d-40b8-a77a-1d719d0ab062}
Web forums all seem to suggest that other people addressed the latter error message by installing VirtualBox 3.2.12, but we're past that now.