Ubuntu & USB3 (not working)

[zrikz]

Just recently installed the newest version of ubuntu desktop.

Having issues getting it to see my USB3 ports. if I plug anything into it, it sees nothing.


lsusb gives me this.

Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 04e8:6054 Samsung Electronics Co., Ltd
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 0bc2:3312 Seagate RSS LLC
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 046d:c049 Logitech, Inc. G5 Laser Mouse
Bus 004 Device 002: ID 1b1c:0a60 Corsair Vengeance K60 Keyboard
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

I have 8 USB 2.0 ports and 4 USB3, two on the back + 2 on the front attached via 1 cable to motherboard.

Not even sure how to tell which one could potentially USB3...

dmesage after plugging / unplugging from USB3 results in nothing.

not sure where to go from here.

 

[zrikz]

In case someone else runs into this problem, here is the solution:

for getting usb 3.0 working do this:

open a terminal and input this:

sudo gedit /etc/default/grub

input your password
then find the line that says: GRUB_CMDLINE_LINUX=""
then make it this: GRUB_CMDLINE_LINUX="iommu=soft"
save the file
then run this in the terminal:

sudo update-grub

reboot and disable iommu in the bios

After this all usb 3.0, usb 2.0, and ethernet should work.