Looks it is a known problem, even on the latest upstream kernel. Alan stern has figured out a draft patch[1] to address the issue, but it is still not a final version.
[1], http://marc.info/?l=linux-usb&m=132440828606642&w=2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/954704 Title: USB device disconnect leads to all devices on hub disconnecting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954704/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
