Re: Problems with several modems after upgrade to ModemManager-1

[Bjørn Mork <bjorn mork no>]

Harald Jung <support ecos de> writes:

> Logfile: http://www.hjit.de/mm.log
> ############################
> Modem 0bdb:1926 doesn't find a valid data port
>
> T:  Bus=03 Lev=01 Prnt=01 Port=03 Cnt=03 Dev#=  4 Spd=480 MxCh= 0
> D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  4
> P:  Vendor=0bdb ProdID=1926 Rev=00.00
> S:  Manufacturer=Lenovo
> S:  Product=H5321 gw
> S:  SerialNumber=12924B04A98B48M0
> C:  #Ifs=11 Cfg#= 1 Atr=e0 MxPwr=0mA
> I:  If#= 0 Alt= 0 #EPs= 0 Cls=02(commc) Sub=08 Prot=00 Driver=(none)
> I:  If#= 1 Alt= 0 #EPs= 1 Cls=02(commc) Sub=02 Prot=01 Driver=cdc_acm
> /bin/usb-devices: line 79: printf: 0a: invalid number
> I:  If#= 0 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_acm
> I:  If#= 2 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_acm
> I:  If#= 3 Alt= 0 #EPs= 1 Cls=02(commc) Sub=02 Prot=01 Driver=cdc_acm
> I:  If#= 4 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_acm
> I:  If#= 5 Alt= 0 #EPs= 1 Cls=02(commc) Sub=09 Prot=01 Driver=cdc_wdm
> I:  If#= 6 Alt= 1 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim
> I:  If#= 7 Alt= 2 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim

It's unclear to me whether you've tested this with a MBIM capable
ModemManager.  You might want to load cdc_ncm with the 'prefer_mbim=N'
option until you are ready to use MBIM on this modem.


> /bin/usb-devices: line 79: printf: 08: invalid octal number

Yes, and the usb-devices script is unfortunately a bad substitute for
/proc/.../usb/devices.  Not only does it barf on these interface
numbers, but more importantly: It hides all inactive alternate interface
settings and configurations.  In this case I know that there are NCM
alternate settings here, but that kind of information is usually
crucial.  The script is so incomplete that it is close to useless IMHO.

It's much better to mount debugfs on /sys/kernel/debug and use
/sys/kernel/debug/usb/devices.  If you cannot do that, then use
"lsusb -vd".


Bjørn