On Fri, 2015-05-15 at 16:11 +0200, Aleksander Morgado wrote: > On Fri, May 15, 2015 at 10:28 AM, John Whitmore <[email protected]> wrote: > > I'm trying to put together a system which uses 2 Huawei E398 USB Dongles > > with > > two different operator SIM's so that if one modem has no coverage the other > > takes over. > > > > I've followed the debugging information on [1] to try and get my hands on > > the > > logs but not sure where the NetworkManger is sending its logging info. I do > > have the output from ModemManager, which I'll attach to this email. > > > > I'm not sure that the logging from ModemManager will be of any help at all > > as > > it might not be the issue. What is happening is that I can establish a > > connection but as soon as I start to do a ping test from the command line > > the > > whole system freezes. > > > > This is with one 4G Dongle in place, I was hoping to be able to manage both > > connections. > > > > I'm using raspbian 2015-05-05 with kernel 3.18.13 > > > > If I can send on anything else please let me know. I'd really like to get > > this > > system working. Unfortunately I've only got two E398 Dongles so I can't try > > with a different modem at present. I'll try and get my hands on another. > > > > > > [1] : http://www.freedesktop.org/wiki/Software/ModemManager/Debugging/ > > > Ouch; ModemManager 0.5.2 is way too old... Could you setup > ModemManager 1.4.8 with libqmi to try? > > Also, just to make sure, you are using an external *powered* usb hub > to connect the modems to the RPi, right? The RPi cannot handle the > power consumption of 1 single modem in connected state.
Good point; even some laptops cannot power modems adequately, hence they ship Y cables with modems that pull power from 2 USB ports :) Always good to check this out when the modem crashes while connected. Dan _______________________________________________ ModemManager-devel mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
