@Pi - without more information, we can only cluck sympathetically. Please attach the results of lspci -vvnn and lsusb - and tell us the result of trying the workarounds described above.
Newer kernels have unmodularised ehci_hcd so it cannot be removed. You don't really want to remove it because USB transfers will slow to a crawl. -- ehci_hcd module causes I/O errors in USB 2.0 devices https://bugs.launchpad.net/bugs/88746 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs