On 26 October 2011 21:43, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > Try one more experiment: Collect two equivalent usbmon traces, one from > each of the computers. And this time, unload ehci-hcd before starting > the trace. That just might have some effect. Perhaps comparing the > two traces will show something. Although I doubt it -- this really > does look like a low-level problem, like the sort of thing that happens > when a device doesn't have quite enough power. Alan, sorry for a delayed response. I was caught up in a few things. I tried unloading the ehci_hcd on the laptop on which this modem is working. However, there is nothing coming up in either dmesg or usbmon output on plugging in the modem. In fact, even the lsusb command fails with the following output: $ lsusb unable to initialize libusb: -99 Just to clarify, ohci_hcd was loaded all this while. -OBD -- 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
