Dmitriy Fitisov wrote:
> USB descriptors configured as a modem, so, when I connect it to Linux, 
> cdc-acm module is loaded.
> However, there is apparently some process which is watching modems, so on 
> connection
> I got some info on my device - on Ubuntu it is AT commands, for which I have 
> adapted firmware
> (seems ModemManager is running), but on Raspberry I cannot find out what 
> process attaches 
> to my "modem" and what it wants. 
> It sends a data similar to terminal control sequence. 

Possibly 'getty'?

> Where should I look at? I want to turn this process off.

Look in /var/log/syslog and hopefully something will be logged there.

Look in 'ps -ef' and see if anything is shown associated with the tty
device.

Bob

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