RaspberryPi 2 with Huawei E398

[John Whitmore]

On Sat, May 23, 2015 at 06:31:02PM +0200, Thomas Schäfer wrote:
> Am Donnerstag, 21. Mai 2015, 09:17:14 schrieb Thomas Schäfer:
> > Am 21.05.2015 um 08:21 schrieb Aleksander Morgado:
> > > Did you have to use the external powered hub? Or did the RPi2 give you
> > > enough power in the USB port?
> > 
> > I used it without hub and it worked for the test. But afterwards I
> > removed the stick and rpi2 crashed.
> > 
> > So it may be better to use it with an external powered hub.
> 
> Update: 
> 
> I used it now with a powerd hub. The crashes still occur. 
> 
> It crashes also independent of the distribution (suse Tumbleweed, collabora 
> debian jessie).
> 
> One time at jessie the last words are something with qmi_wwan.
> 
> A picture is attached.
> 
> Regards,
> Thomas 


I didn't realise that there was an openSuse version for the Arm RPi. I must go
looking for it. I gave up on trying to get later versions of ModemManager &
NetworkManager installed on Raspbian and moved instead to UbuntuMate.

That had a few issues with ejection of the CD ROM but I think it's working
pretty stable at present. One modem works great and connects automatically
on powerup. 

However when I add the second modem it's not getting mode switched. I did it
manually for the moment and it does appear in ModemManagerGUI but in
NetworkManager when I try to add a new Mobile Broadband connection it's asking
me which device I want to connect. I've already got one connection active and
it's offering me two devices "Huawei Technologies HUAWEI Modem" and
"cdc-wdm3".

I've no idea which is my existing connection on the "3" Network and which is
the new modem with a "Vodafone" sim? In additon when the second modem is
insterted systemd gets a bit concerned that sysfs is being filled in with
duplicate enteries. Maybe I should use two different dongles. 

John



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