On Sat, 2009-10-10 at 16:41 -0400, Alan Stern wrote: > On Sat, 10 Oct 2009, Alan Stern wrote: > > > On Sat, 10 Oct 2009, Josua Dietze wrote: > ... > > > This is one of the mode switching devices. It is switched to modem > > > mode by "usb_stor_huawei_e220_init". > > > > > > Something keeps resetting it to initial mode. It might be a > > > powersave/suspend issue. > > > > It's not related to powersave or suspend. (Although both trace files > > show that the device's remote-wakeup feature did get enabled; I have no > > idea what code was responsible for doing that. AFAIK it shouldn't > > happen unless the device is about to be suspended.) > > It turns out that the remote-wakeup enable _is_ the mode-switch > command. Don't ask me why the manufacturer decided to use an > pre-existing command to tell the device to switch modes. > > Anyway, it's clear from the logs that the mode switch worked in both > cases. Initially the device shows only one interface, and after the > mode switch it shows four. Yes, that works, you can see the ttyUSBx ports showing up. It looks like it may just be the resets coming from usb-storage that are breaking things. Cheers, Ben. -- 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
