Debugging the ModemManager

[Carlo Lobrano]

Hello,

I built ChromiumOS from sources in a live usb to verify some mobile modems support, and run into some issues with Modemmanager being stuck and unreachable from command line tools (either mmcli and ChromiumOS scripts), but I could not find the ModemManager logs anywhere under /var/log nor in dmesg.

Could anyone point me in the right direction?

Thanks in advance,

Carlo

[Brian Norris]

/var/log/net.log ?

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[Andrew Lassalle]

running ModemManager with debug logging will be helpful while you test your changes:

Either start it manually in debug mode:

  restart modemmanager MM_LOGLEVEL=DEBUG

or change `env MM_LOGLEVEL=INFO` to `env MM_LOGLEVEL=DEBUG`  in the file /etc/init/modemmanager.conf. You will need to do this every time you deploy ModemManager 

[Carlo Lobrano]

thanks all

indeed net.log is the right place. I probably case sensitive grep-ed the all /var/log directory with pattern "modemmanager" and not "ModemManager", so I could not find it.

Best regards,
Carlo