On Mon, 2016-09-19 at 22:06 +0200, Harald Jung wrote:
> At this point i have no idea why cdc_mbim doen't grab the device.
> Just that it is loaded but i think it is just loaded by cdc_ncm 
> dependencies.

Check usb_modeswitch/usb_modeswitch_dispatcher.  If you move them out
of the way, does that help?  Older versions (like 2.4 and earlier) than
the most recently released one would force-bind interfaces to some
drivers which could interfere with kernel device matching.

I just had this issue today for a Franklin U600 which should use cdc-
acm on interfaces 0 & 1 and qcaux on 2-5.  But the presence of
/usr/sbin/usb_modeswitch_dispatcher prevented cdc-acm from binding.
 moving it out of the way fixed the issue, as would (I presume)
updating my usb_modeswitch version.

Dan

> 
> On 19.09.2016 22:03, Bjørn Mork wrote:
> > 
> > Harald Jung <harald.j...@ecos.de> writes:
> > 
> > > 
> > > echo "03f0 521d" > /sys/bus/usb/drivers/cdc_mbim/new_id
> > > had no effect
> > And it should not.  The driver will match the MBIM class.
> > 
> > > 
> > > usb 1-3: GSM modem (1-port) converter now attached to ttyUSB0
> > > usbcore: registered new interface driver cdc_ncm
> > > usbcore: registered new interface driver cdc_wdm
> > > usbcore: registered new interface driver cdc_mbim
> > > 
> > > T:  Bus=01 Lev=01 Prnt=01 Port=02 Cnt=02 Dev#=  3 Spd=480 MxCh= 0
> > > D:  Ver= 2.00 Cls=ff(vend.) Sub=02 Prot=01 MxPS=64 #Cfgs=  2
> > > P:  Vendor=03f0 ProdID=521d Rev=00.01
> > > S:  Manufacturer=Hewlett-Packard
> > > S:  Product=HP hs3110 HSPA+ Mobile Broadband Device
> > > C:  #Ifs= 3 Cfg#= 2 Atr=a0 MxPwr=500mA
> > > I:  If#= 0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00
> > > Driver=(none)
> > > I:  If#= 1 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=02
> > > Driver=(none)
> > > I:  If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=02 Prot=05
> > > Driver=option
> > The cdc_mbim driver should at least try to bind to the two first
> > interfaces.  Don't you see any other messages from it in the log?
> > 
> > 
> > Bjørn
> 
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