AW: Problems with Sierra MC 8790 with older firmware revision

[Gerald Richter - ECOS <richter ecos de>]

Hi Dan,

we have now tested with two MC8790 cards. One has work ever since with modem-manger, the other didn't (as 
Harald reported last week).

> From an usb point of view there is no difference (same product/vendor id etc.).

The only difference is, that the card that isn't working reports Revision K1_0_3_0AP, while the one that is 
working reports K1_1_1_9AP.

Running with

MM_SIERRA_APP1_PPP_OK=1 /modem-manager --debug

Both cards are working correctly and both use ttyUSB4 for pppd (while the one that worked before uses ttyUSB3 
without that setting).

So as far as we can test, it's safe to always use ttyUSB4 on MC8790.

Could you please let us know how to tell modem-manager to always use this setting for MC8790

Thanks & Regards

Gerald



> -----Ursprüngliche Nachricht-----
> Von: Dan Williams [mailto:dcbw redhat com]
> Gesendet: Freitag, 22. Februar 2013 04:57
> An: Harald Jung
> Cc: Marius Kotsbak; networkmanager-list gnome org
> Betreff: Re: Problems with Sierra MC 8790 after kernel upgrade to 3.7.x
>
> On Thu, 2013-02-21 at 19:36 +0100, Harald Jung wrote:
> > Hi,
> >
> > after a coldstart your hint worked.
> > Is there a possibility to pass manage this by udev?
> > modem-manager uses an enviroment variable and is triggered itself by
> dbus.
> > So it seems to be difficult in the first place.
>
> The environment variable is only there for testing.  Once we have a positive
> test, we can tell ModemManager that the 8790 is OK to do this for everyone.
>
> Dan
>
> > Harald
> >
> > Am 18.02.2013 12:24, schrieb Harald Jung:
> > > the output looks a bit different but i wasn't able to establish a
> > > connection :(
> > >
> > > modem-manager[6820]: <debug> [mm-manager.c:859] device_added():
> > > (net/ppp0): could not get port's parent device
> > > modem-manager[6820]: <debug> [mm-at-serial-port.c:334] debug_log():
> > > (ttyUSB3): <-- '<CR><LF>+CIEV: 1,3<CR><LF>'
> > > modem-manager[6820]: <debug> [mm-at-serial-port.c:334] debug_log():
> > > (ttyUSB3): <-- '<CR><LF>+CIEV: 7,0<CR><LF>'
> > > modem-manager[6820]: <debug> [mm-serial-port.c:697]
> data_available():
> > > (ttyUSB4) unexpected port hangup!
> > >
> > > Harald
> > >
> > > Am 15.02.2013 22:07, schrieb Dan Williams:
> > > > On Fri, 2013-02-15 at 09:26 +0100, Harald Jung wrote:
> > > > > I've cleaned up to log, because i have no access to the notebook
> > > > > at the moment.
> > > > > ipv6 should be deactived and is not activated in the config.
> > > > Once you have access to the notebook again, can you stop MM the
> > > > normal
> > > > way:
> > > >
> > > > mv /usr/sbin/modem-manager /
> > > > killall -TERM modem-manager
> > > >
> > > > and then run MM like this?
> > > >
> > > > MM_SIERRA_APP1_PPP_OK=1 /modem-manager --debug
> > > >
> > > > and attempt a connection?  Older Sierra devices allow PPP on the
> > > > APP1 port (ttyUSB4 on your device) but unfortunately we have to
> > > > whitelist that.  It's actually impossible to test which tty accepts
> > > > PPP on most Sierra devices, so we really have no idea.  For
> > > > examply, my C885 and
> > > > USB306 allow it, but none of my (four) 8775s or my 8781 allows it.
> > > >
> > > > Dan
> > > _______________________________________________
> > > networkmanager-list mailing list
> > > networkmanager-list gnome org
> > > https://mail.gnome.org/mailman/listinfo/networkmanager-list