Just installed fresh copy of Manjaro and now my motherboard mounted USB ports are not working properly. If I plug a flash into them, nothing happens. Samething with a keyboard and mouse. I only have two working usb drives and they at cases mounted one. Please help. Thank you
What is the motherboard model #?
I also added the helpdesk tag, to your post.
According to the Ubuntu forums (https://ubuntuforums.org/showthread.php?t=2326722) it can be solved by enabling IOMMU in the BIOS and adding iommu=soft to GRUB.
Open /etc/default/grub and change the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash iommu=soft"
Run sudo update-grub and reboot.
Worked perfectly thanks