Hi! Thanks for the help! >What HC driver modules are loaded in your kernel - just > ehci_hcd or ehci_hcd and uhci_hcd or ohci_hcd. Just ehci_hcd. > 1.6? How many CPU cores do you have and which > processes make it busy? I'dguess it's khubd ans possibly > some other ones. Hm. top reports normal CPU usage (0.1%) and kernel threads like khubd seem calm. I'm not sure what's happening. I have 2 cores. > Can you post a usbmon trace for bus 2 showing this activity? > Instructions are in Documentation/usb/usbmon.txt. Sure! I'll put it here: http://pastebin.com/scv5K75t Thank you! -- 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