The "iommu=soft" workaround does NOT solve this issue for me. Mine is CPU AMD FX-6300. USB 2.0 ports working.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1447267 Title: Ubuntu 14.04 AMD64 MSI 970 Gaming USB3.0 does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/external-storage-manager/+bug/1447267/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs