How to start ModemManager in debug mode?

Message

orion777 · Post by **orion777** » Thu Jan 02, 2020 12:59 pm

I need to play with AT commands, therefore the ModemManager should to be started with the --debug option.
I'm not sure how to do this, since the ModemManager is started via the NetworkManager as a child process (as far I know, because there are no ModemManager in the autostarts).

Code: Select all

pi64 ~ # ps -ax | grep ModemManager
 2175 ?        Sl     0:05 /usr/sbin/ModemManager
 4562 pts/1    S+     0:00 grep --colour=auto ModemManager
pi64 ~ # rc-update | grep -i manager
       NetworkManager |      default
pi64 ~ #

Do somebody knows how to force the modemanager to be started in debug mode?

Post by **fedeliallalinea** » Thu Jan 02, 2020 1:18 pm

Never tried but following this howto you can try with

Code: Select all

# /etc/init.d/NetworkManager stop
# /usr/sbin/ModemManager --debug
# /usr/sbin/NetworkManager --debug --log-level=DEBUG

orion777 · Post by **orion777** » Fri Jan 03, 2020 7:14 pm

Thank You fedeliallalinea for the answer!

The problem is that the Modemmanages is started by the Networkmanages as a child, its is NOT started from the init.d.
Therefore, I have to kill the NetworkManager first, othervice it will restart killed ModemManager (and does not react on /etc/init.d/NetworkManager stop ):
1) kill -9 networkmanager's pid
2) kill -9 modemmanager's pid
3) /usr/sbin/ModemManager --debug
4) rc-service Networkmanager start

So yes, such approach is possible, but it can't be permanent... So, maybe some more legal approach exists?

orion777 · Post by **orion777** » Sun Jan 05, 2020 9:05 am

Can we start something with options from init.d? E.g. ModemManager --debug
However, the --debug option disables daemon mode...

Post by **fedeliallalinea** » Sun Jan 05, 2020 11:00 am

Maybe something with NetworkManager.conf?