Hello,
On Dec 16 12:45 Scott Alfter wrote (excerpt):
... 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.
All the following devices (each with one or more interfaces) are going through the xhci_hcd driver: /: Bus 03 |__ Port 3: Dev 2 |__ Port 4: Dev 3 |__ Port 5: Dev 4 |__ Port 9: Dev 5 |__ Port 13: Dev 6 You did not tell what of those devices the scanner is. I guess it is /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/14p, 480M ... |__ Port 4: Dev 3, If 0, Class=Vendor Specific Class, Driver=, 12M Scanners usually belong to the generic "Vendor Specific Class" because there is no specific USB device class "scanner". Regarding "USB 2.0 (black) and USB 3.0 (blue)": Neither the color nor what the port is labeled on the computer is reliable regarding what kernel driver is used for the port. Only the "lsusb -t" output shows what kernel driver is used. For example all USB ports on my testing machine have same dark color. Also the "super speed" (USB 3) labeled ports are basically black. Their exact color is "very dark" but not "100% black" and neither blue (USB 3.0) nor teal blue (USB 3.1), cf. https://en.wikipedia.org/wiki/USB#Colors On my testing machine xhci_hcd is used for all USB ports where I can connect devices (i.e. all external USB ports). Kind Regards Johannes Meixner -- SUSE LINUX GmbH - GF: Felix Imendoerffer, Jane Smithard, Graham Norton - HRB 21284 (AG Nuernberg) -- 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
