Happens to me sometimes when powering on from suspend -- any USB device plugged in will get the following:
usb 5-1: new full-speed USB device number 21 using uhci_hcd usb 5-1: device descriptor read/64, error -110 No plugged-in USB device will be properly detected until a cold boot -- camera, mouse, keyboard or harddrive. This is Ubuntus 12.10 through 13.10; may be a hardware problem, but again: it only happens to me after the computer has been in Suspend power mode, and not every time. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/433438 Title: device descriptor read/64, error -110 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/433438/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs