USB 3.0 ports do not work

[Kactux]

Hmm... I wonder if using amd_iommu=on, or probably =off might be worth trying, or even disabling/enabling it in the BIOS (the grub kernel option to do so may be easier and safer)? Not 100% sure if the =soft parameter is even valid in modern kernels.

I don't think iommu is overly useful in general uses, mainly it is for virtualization in regards to hardware apps-through, iirc.

Yay! 🎉 🥳 Problem Solved! claydoh's above suggestion worked! Now all USB3 ports are working properly. Thanks claydoh!!!!

"amd_iommu=off" FTW!

Solution:

1.) Make sure IOMMU mode is disabled in BIOS. It is found in the OC (overclocking) section > CPU Features > IOMMU Mode > Disabled

2.) Open /etc/default/grub in kate,

Change:

GRUB_CMDLINE_LINUX="amd_iommu=off"

Save file.

3.) Open Terminal and Run

sudo update-grub

4.) Reboot

[claydoh]