On Dec 2, 2014, at 1:42 AM, Bob Proulx <b...@proulx.com> wrote: > 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'? > May be. In this case I have to have some line in inittab which tells me that getty has to be activated on /dev/ttyACM0, but I do not have it. Somewhere else? >> Where should I look at? I want to turn this process off. > > Look in /var/log/syslog and hopefully something will be logged there. No, nothing related. I compiled cdc-acm with debug support and print bytes flowing and see that there is some info exchange with lot of 0x20 0x08 sequences after some "term control sequences" > > Look in 'ps -ef' and see if anything is shown associated with the tty > device.
Tried that. No such things. It is "come and go". I carefully went through list of running processes with "top" and identified couple of suspects, which behaves actively at the time of insertion: udevd and ifplugd. If I stop service udevd, no devices created in /dev/ which is logically, udevd should be responsible for some part. > > Bob -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/60e220b2-6c3e-4b8d-9aeb-e27158d40...@radier.ca
