Am Dienstag, den 05.09.2017, 13:52 -0700 schrieb Shaya Potter: > I've added a USB 3.0 card that should support super speed to a server I > have, but it's not working at super-speed speeds for the external hard > drives I connect, and a having a hard time diagnosing why (hardware > issue/quirk? driver issue?) > > Before installing the card, xhci wasn't ever used, now it is, so that > makes it clear that it is a usb 3.0 card. It's a 4 port card, but what's > weird is that the card seems to expose 2 USB hubs with 4 ports. It should do so. XHCI always provides two virtual controllers as the concept of companion controllers for lower speeds has been abandoned. > I have tested these drives in other computers (windows) and they seemed to > work at super-speed speeds, plan is to try a different usb 3.0 card as > well in this machine which I also know worked in windows at super-speed > speeds, but trying to understand f there are other ways to debug it. > > i.e. even lsusb -v shows that these devices should be capable of > super-speed speeds This is an issue with the XHCI driver. Please switch on dynamic debugging for it. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
