dlink dwm221-B1 failed regression test - time out

[Thomas Schäfer]

Am 18.04.2017 um 17:24 schrieb Aleksander Morgado:
> On 15/04/17 22:12, Thomas Schäfer wrote:
>>> Could you try getting debug logs as generated by the qmi-proxy?
>>> There's are some "broken pipe" errors in the MM log that I don't like,
>>> maybe the proxy is segfaulting or something. Steps to get the logs
>>> would be:
>>>
>>> $ sudo systemctl stop ModemManager
>>> $ sudo killall -9 qmi-proxy
>>> $ sudo /usr/libexec/qmi-proxy --verbose --no-exit > /tmp/qmi-proxy.log 2>&1
>>> & $ sudo systemctl start ModemManager
>>>
>>> Hopefull you'll then get the qmi proxy logs in that file, let's see if
>>> we see something there.
>> There is something.
>>
>> The log file is attached.
> Did the cdc-wdm port go away from the system while you were testing it?
> I'm seeing this in the proxy:

The device file at /dev/cdc-wdm0 stays.
Also dmesg has no output.


> -Warning ** Error reading from istream: Error reading from file
> descriptor: Input/output error
>
> Which would indicate that the proxy process suddenly cannot talk to the
> cdc-wdm any more.
>

The /dev/cdc-wdm0 is dead(but visible). After restarting the ModemManger 
Modemmanager uses only the /dev/ttyUSB1 for a ppp connection.
After replugging in the device /dev/cdc-wdm0 works for a while again.

Thomas