On Wed, 21 Apr 2010, Sriram V wrote: > I have appended the relevant console results with PRINTK_TIME enabled. > I have also attached a usbmonitor output text file. Here's the problem. This part of the usbmon trace occurs during the reset-resume for the 1-2.1 wireless device: cf9b1e40 726890401 S Co:1:002:0 s 23 03 0004 0001 0000 0 cf9b1e40 726890584 C Co:1:002:0 0 0 cf9b1e40 726913442 S Ci:1:002:0 s a3 00 0000 0001 0004 4 < cf9b1e40 726913564 C Ci:1:002:0 0 4 = 01011100 The first two lines show the computer telling the hub at 1-2 to reset port 1. The last two lines show the computer asking the hub for the port status. The status value indicates that during the reset, the device was unplugged. The same thing happened several more times, which is why you got all those "hub 1-2:1.0: unable to enumerate USB device on port 1" errors during the following five seconds. Clearly this is wrong, but the problem is either in the hub or in the wireless device, not in the computer. Is it possible for you to try using a different hub? Alan Stern -- 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
