A user has reported similar problems with certain hardware/Linux combinations, and has provided some usbmon traces of the a not working and working systems. The high level and usbmon traces are here: <http://users.abo.fi/jskata/spyder2_argyllcms/> The not-working usbmon trace is this one, using the ASRock P67 Pro3 system: <http://users.abo.fi/jskata/spyder2_argyllcms/spyder2_asrock_p67_pro3.txt> and the working one is this one, using a thinkPad X40 system: <http://users.abo.fi/jskata/spyder2_argyllcms/spyder2_tpx40.txt> Are there any insights to be gleaned from these traces ? The user reports that none of the USB ports on the ASRock P67 Pro3 would work with this device, but that a PCI based USB card plugged into the system works. Thanks, Graeme Gill. -- 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