On 12/16/2015 2:42 AM, Johannes Meixner wrote: > On Dec 15 13:29 Scott Alfter wrote (excerpt): >> The new motherboard supports USB 3.0 as well as 2.0 > > Really pure traditional USB 2 hardware? > > In general when your scanner is connected via USB: > > There are currently issues with USB ports where the kernel > module "xhci" is used as kernel driver. > > When "lsusb -t" shows "Driver=xhci_hcd" for the USB bus and > port where the USB scanner is connected (see "lsusb" where > the scanner is connected), then there could be issues > depending on the computer hardware and firmware.
I brought my scanner in to work to test it with an older machine that only provides USB 2.0. As I suspected (though not on account of possible USB issues), it ran like a champ here, even though it was running in a VM, not on the metal. (As an aside, VirtualBox's support for passing USB devices through to guests really appears to have improved with v5.0.) Since it's at work, I can't test it at home, but lsusb -t shows the following for the home system: /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/14p, 480M |__ Port 3: Dev 2, If 0, Class=Wireless, Driver=, 12M |__ Port 3: Dev 2, If 1, Class=Wireless, Driver=, 12M |__ Port 4: Dev 3, If 0, Class=Vendor Specific Class, Driver=, 12M |__ Port 5: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M |__ Port 9: Dev 5, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M |__ Port 13: Dev 6, If 0, Class=Video, Driver=, 480M |__ Port 13: Dev 6, If 1, Class=Video, Driver=, 480M |__ Port 13: Dev 6, If 2, Class=Audio, Driver=snd-usb-audio, 480M |__ Port 13: Dev 6, If 3, Class=Audio, Driver=snd-usb-audio, 480M /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M At this time, it has a keyboard, mouse, webcam, Bluetooth dongle, and ANT+ dongle plugged in. I filled the "USB 2.0" (black) ports up before I started plugging things into USB 3.0 (blue) ports, yet it looks like everything's going through the xhci_hcd driver. Looks like a separate USB 2.0 interface is in order...a minor annoyance, but at least it's a cheap fix. -- Scott Alfter sc...@alfter.us
signature.asc
Description: OpenPGP digital signature
-- sane-devel mailing list: sane-devel@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to sane-devel-requ...@lists.alioth.debian.org
