https://bugs.freedesktop.org/show_bug.cgi?id=91880
--- Comment #149 from alvarex edisonalvarez@arnet.com.ar --- I forgot to mention I had a similar problem on Windows also with a 260x on the same motherboard so I think in my case is something to do with the motherboard. I tried modyfing some option in grub but that did't help, I added
iommu=pt acpi_osi=Linux acpi=force acpi_enforce_resources=lax acpi_osi='!Windows 2013' acpi_osi='!Windows
The iommu table is bugged on this motherboard maybe it has something todo? If I disable iommu completely on the bios usb devices will not power up.