"Shawn J. Goff" <shawn.goff@xxxxxxxxxxxxx> writes: > On 10/25/2012 03:40 AM, Bjørn Mork wrote: > >> Which IMHO points to the firmware implementation as the major >> difference. > Just to be sure: are you talking about the modem's firmware? Yes > After the failure happens, I can see from USB traces (and this is with > an external USB sniffer) ARP requests going out and nothing coming in > - > so it seems like it's not a case of dropping URBs. Does the modem respond to other packets than ARP? It is a point to point link, and the ethernet header is just a dummy anyway, so you can turn off ARP on the interface and test. > At the point when > things stall out, I don't see anything special happening - there's a > large file that is downloading (lots of IN packets) that suddenly > stops while the tty port keeps chatting normally. I can also provide a > trace from the external sniffer if it's interesting, but here is a > usbmon trace of the failure: http://sprunge.us/ORQE . The last > incoming message from the wwan endpoint (2:8) is at 1555583640. I may very well be wrong, but to me this looks like the modem just stops responding for some reason. I have no idea why. Bjørn -- 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
