I want to use my USB 2.0 ports in Ubuntu 19.10, but they do not seem to work.

What I have already tried:

  • Unplugging and plugging the peripherals (and USB drives) back in - Did not help.
  • Putting the peripherals on USB 3.0 - Works, but I still want to be able to use my USB 2.0 ports
  • Doing apt dist-upgrade - Did not help.


  • CPU - AMD FX-8350
  • MOTHERBOARD - Gigabyte 970A-UD3 (AM3/AM3+) with BIOS version FC

Please,assist me.

1 Answer 1


The issue was IOMMU. By default it is set to DISABLED. It needs to be set to ENABLED.

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