> Date: Mon, 20 May 2002 14:00:39 +0100 > From: "Dr Jaime V. Miro" <[EMAIL PROTECTED]> > > When I boot up, it works fine. dmesg throws (on both machines) > > usb0: register usbnet 001/002, Prolific\PL-2301/PL-2302.
So far so good, though I don't know where that backslash came from! > however, if I try and configure the actual net address by running > ifconfig usb0 10.0.0.1 up > (and ifconfig usb0 10.0.0.2 up in the other machine) > > I get the following error: > SIOCSIFFLAGS: Broken Pipe > > This is what /var/log/messages says: > > usb0: open reset fail (-32) usbnet 001/002, Prolific PL2301/PL-2302 Basically "-EPIPE" (-32) means the device stalled, so the handshake protocol specified by Prolific didn't work on that device. > And network does not work (ping says network unreachable). I think I > must be doing something wrong, because it is exactly the same symptoms > in both machines, but I do not what. Any ideas? I think the root cause of the problem is flakey hardware from Prolific. Some devices seem to fail the reset consistently, others succeed just as often, but I don't think I've ever seen any of their PL-2301/2302 devices acting like their chip spec says they'll act. Prolific also has not responded to any of numerous requests for information, so it's not clear that these problems could be resolved. I've been thinking of making that particular "minidriver" be the only one in "usbnet" that's labeled as "experimental". Some folk have reported success if they just comment out the "reset" entry in the "prolific_info" struct. You might have a revision of their hardware for which that's an appropriate workaround. (Could you send me the /proc/bus/usb/devices info for your device? It's barely possible that they changed the revision info in their hardware so that such a workaround could be automated.) An even better solution is to avoid those Prolific cables; that might be a bit tricky since they're so widely available (cheap in all senses of the word). I've never heard problem reports from users of Belkin, ETek, Anchorchips, NetChip, Laplink, and so forth ... only Prolific. - Dave _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
