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I've got an ExFAT USB3 drive that my Ubuntu laptop seemed to recognise, but no longer does. I've read a few posts to try getting relevant/diagnostic information, but to no avail. Any further advice gratefully received.

Timeline (numbers may help reference)

  1. Drive inserted, some error message about exfat not being a known file system. Read HowToGeek artitcle, installed suggested utilities
  2. Drive inserted, no error message, but not automounted
  3. Read suggestions for lsusb, fdisk, disks application. None seem to list drive
  4. Read suggestion that gparted may help: I don't see it as a device there
  5. Read suggestion for dmesg -c output (below block). It seems to suggest the device can be read to some extent, so maybe it just needs formatting? I'm happy to take that approach: can't access the current data anyway!

[ 3890.131506] usb 3-1: new full-speed USB device number 6 using xhci_hcd

[ 3890.243557] usb 3-1: device descriptor read/64, error -71

[ 3890.459553] usb 3-1: device descriptor read/64, error -71

[ 3890.675510] usb 3-1: new full-speed USB device number 7 using xhci_hcd

[ 3890.787600] usb 3-1: device descriptor read/64, error -71

[ 3891.003582] usb 3-1: device descriptor read/64, error -71

[ 3891.219558] usb 3-1: new full-speed USB device number 8 using xhci_hcd

[ 3891.219752] usb 3-1: Device not responding to setup address.

[ 3891.423643] usb 3-1: Device not responding to setup address.

[ 3891.627575] usb 3-1: device not accepting address 8, error -71

[ 3891.739566] usb 3-1: new full-speed USB device number 9 using xhci_hcd

[ 3891.739738] usb 3-1: Device not responding to setup address.

[ 3891.943759] usb 3-1: Device not responding to setup address.

[ 3892.147574] usb 3-1: device not accepting address 9, error -71

[ 3892.147625] usb usb3-port1: unable to enumerate USB device

Drive is a Corsair, but not a padlock, so don't think this thread is relevant. The gparted absence made me wonder whether the USB itself is knackered, but the error message at (1) and the dmesg output at (5) give me some hope.

  • Those messages show the USB itself is knackered. – psusi Apr 24 '17 at 20:19

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