Speaking about USB audio IFs... It appears that the USB2 devices have
problems with USB3 ports (Like the 1818vsl). See:
https://forums.presonus.com/posts/list/33427.page
I don't know if this has been fixed by Intel since Ivy. It appears to be a
hardware problem with Intel's chipset where the only workaround is to
remove the USB3 driver/kernel module and use all the USB3 ports as USB2
ports.
--
Len Ovens
www.ovenwerks.net