kernel-packages team mailing list archive

[Kirils Solovjovs <1242321@xxxxxxxxxxxxxxxxxx>]

None of the workarounds did anything for me.

But this fixed it (for me): 
1. Power off your computer
2. Plug the device in
3. Power on the computer
4. The device will now be detected and working normally. You will also be able to unplug and replug it without restarting.
5. Restart your computer with the drive mounted.
6. Unmount the drive and disconnect it.

Now your drive will work even when not connected at boot time. Steps 5
and 6 were crucial for this.

But clearly something is amiss here since now I have a new problem (only
USB3.0 ports) - when I safely remove the drive or power it off, it
immediately reconnects and auto-mounts.

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https://bugs.launchpad.net/bugs/1242321

Title:
  USB 3.0 Harddrive not recognised

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Ubuntu is not recognising any device plugged into any USB 3.0 ports.
  Sometimes Ubuntu will freeze for a few seconds when you plug something
  into a USB 3.0 port; when Ubuntu comes out of the freeze, the device
  is still NOT recognised.

  No problems with USB 2.0 ports and devices.

  The USB 3.0 on this computer only works in Windows 7 (I'm dual booting
  Ubuntu 13.10 and Windows 7, both are 64-bit).

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