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.



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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