Gigabyte GA 970A-UD3, USB 2.0 & 3.0 not working (even keyboard)

[bigbanana69]

Hi all,

I wanted to install CentOS 7 on my PC, it has Gigabyte GA-970A-UD3 (AMD 970 chipset)mobo & Etron USB 3.0 Controller.

USB controllers don't work, I couldn't install and keyboard wasn't working... I couldn't type (usb keyboard).

I tried Ubuntu, 16.04, it doesn't has such problems.

I want CentOS 7.

Please help.


Thanks,

[TrevorH]

It's a known thing and you need to append amd_iommu=on to the kernel command line to make it work.