On Wed, Mar 19, 2014 at 11:37:40AM +0100, Fiorenzo Zanotti wrote: > Hi, > I'm running an Ubuntu 13.10 32 bit desktop on a PC with ASROCK Z87 PRO4 > motherboard and I5-4670k cpu. > > Having Intel USB3 mode set to ENABLED or SMART or AUTO , a canon scanner > D660U attached to one of the usb2 port use xhci_hcd module. > > I can scan a Document right once , then I got an read error (timeout) on > the first bulk_write. > > Setting from UEFI Configuration Intel USB3 mode to DISABLED , Linux use > ehci module and everything work well. > > I don't know if this is the right list to ask , if so, hope this help you > to find a fix. This is a known issue. We have it tracked in our bug tracker, and Mathias is working on a fix on top of the global command queue patches to address this issue. Mathias will contact you when he gets a fix in place. Sarah Sharp -- 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
