I have a problem with my external HDD (WD My Book Essential 1TB) working on USB 3.0 port.
I'm using dual boot setup with Windows 7 and Ubuntu 11.10, both 64 bit.
While I'm running Windows and rebooting back to Windows everything works well. When I'm switching to Ubuntu everything works great as well. But after the first reboot from Ubuntu, neither Windows nor Ubuntu mounts the external drive. I have to reboot the device manually. I suspect that the problem is with unmounting the device on shutdown in Ubuntu.
This only happens with USB 3.0 ports. When I plug the same device into USB 2 port the problem doesn't persist.
Does anyone have the same problem, or a clue what might going wrong?