Problem with mm-1.0.0 and Dell 5560

[Bjørn Mork]

Marek Kaluba <abulak at gmail.com> writes:

> On Wednesday 18 December 2013 13:42:11 Bjørn Mork wrote:
>
>> > Still after modprobing cdc_ncm prefer_mbim=N (and restarting NM,
>> > relogging, etc) MM coudn't find the valid data port (the same error).
>> 
>> Please try to include more actual results.
>> 
>> Which drivers are attached to the modem after this change? "mmcli -m 0"
>> will show this for example.  Did you get any new messages in the logs
>> etc?
>
> With mbim enabled:
> mmcli -m 2
>
> /org/freedesktop/ModemManager1/Modem/2 (device id 
> '0b23d608ea84690b65aa61baa5e39643627fe795')
>   -------------------------
>   Hardware |   manufacturer: 'Ericsson MBM'
>            |          model: 'MBIM [413C:818E]'
>            |       revision: 'CXP 901 8700/1 - R3C18'
>            |      supported: 'gsm-umts'
>            |        current: 'gsm-umts'
>            |   equipment id: '358994041358732'
>   -------------------------
>   System   |         device: 
> '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6'
>            |        drivers: 'cdc_acm, cdc_mbim, cdc_wdm'


Yes, we already saw that.  I was wondering whether this would show
cdc_ncm instead when prefer_mbim=N, like expected.

>            |         plugin: 'Ericsson MBM'
>            |   primary port: 'cdc-wdm1'
>            |          ports: 'ttyACM0 (at), wwp0s29u1u6i6 (net), ttyACM1 (at), 
> ttyACM2 (at), cdc-wdm1 (mbim)'

And if the net port still is picked up by MM with the ncm driver.  Both
*should* happen, but it would be good to confirm it.

> I am pretty sure that logs shown me the same error (couldn't find valid data 
> port), BUT I will test it once again tomorrow in the evening (including all 
> possible changes in logs)

Thanks.  And if you could send the output of
"cat /sys/kernel/debug/usb/devices" as well, or just the part for this
modem?  That would show all the different configurations and
altsettings.  "lsusb -vd vid:pid" will work as well, but is much longer
and more difficult to read IMHO.  It has the advantage that it shows the
functional descriptorss, but I don't think we need those.

Make sure to mount debugfs before you look at
/sys/kernel/debug/usb/devices :

 mount -t debugfs none /sys/kernel/debug


Bjørn