On Thu, 15 Oct 2009, Andrew Morton wrote: > > http://bugzilla.kernel.org/show_bug.cgi?id=14405 > > > > Summary: huawei e620 usb umts modem stopped working > > On Archlinux with kernel26-2.6.31.3-1 my USB UMTS modem stopped working. > > According to dmesg it keeps attaching and disconnecting, nearly freezes the > > system while doing so and crashes networkmanager - though I think that are just > > side effects. > > > > I reported in archlinux's tracker and got redirected to report here. > > http://bugs.archlinux.org/task/16646 It looks like this bug report and #14499 are duplicates. A fix for some Huawei modems was added in 2.6.31.5. Does it help with your problem? If it doesn't, please attach to the bug report a usbmon trace showing what happens when you plug in the modem. Instructions are in the kernel source file Documentation/usb/usbmon.txt. 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