In the duplicate bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/424594 it is described that this happens due to the pwc module is not loaded the right way.
If you unload the module and then plug it in it works just fine.
In the duplicate bug https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/424594 it is described that this happens due to the pwc module is not loaded the right way.
If you unload the module and then plug it in it works just fine.