To temporary solve the problem, disable USB 2.0 by this way : $sudo modprobe -r ehci_hcd $sudo echo "blacklist ehci_hcd" > /etc/modprobe.d/blacklist-ehci
To get USB 2.0 back : $sudo rm /etc/modprobe.d/blacklist-ehci $sudo modprobe ehci-hcd Waiting for a new Kernel image. It seems that the experimental individual usb suspend is the source of this bug. -- EHCI Configuration Errors Cause USB Errors (Mouse, etc) https://launchpad.net/bugs/49367 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
