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Description of problem: We have a bunch of tests and during bringing connection down by NM, modem seems to get stuck. mmcli --command 'AT#REBOOT' seems to help Version-Release number of selected component (if applicable): MM-1.6.0-2 NM-1.4.0-12
mm log: <debug> PIN: unspecified <debug> Operator ID: unspecified <debug> Allowed roaming: yes <debug> APN: internet <debug> IP family: ipv4v6 <debug> Allowed authentication: unspecified <debug> User: unspecified <debug> Password: unspecified <debug> Number: *99# <info> Simple connect state (4/8): Wait to get fully enabled <info> Simple connect state (5/8): Register <debug> Already registered in network '00150', automatic registration not launched... <info> Simple connect state (6/8): Bearer <debug> Using already existing bearer at '/org/freedesktop/ModemManager1/Bearer/0'... <info> Simple connect state (7/8): Connect <debug> Connecting bearer '/org/freedesktop/ModemManager1/Bearer/0' <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (registered -> connecting) <debug> Launching 3GPP connection attempt with APN 'internet' <debug> Looking for best CID... <debug> (ttyACM0) device open count is 2 (open) <debug> (ttyACM0): --> 'AT+CGDCONT?<CR>' <debug> (ttyACM0): <-- '<CR><LF>' <debug> (ttyACM0): <-- '+CGDCONT: 1,"IPV4V6","internet","",0,0<CR><LF><CR><LF>OK<CR><LF>' <debug> Found '1' PDP contexts <debug> PDP context [cid=1] [type='ipv4v6'] [apn='internet'] <debug> Found PDP context with CID 1 and PDP type ipv4v6 for APN 'internet' <debug> (ttyACM0) device open count is 3 (open) <debug> Connection through a plain serial AT port (ttyACM0) <debug> (ttyACM0) device open count is 4 (open) <debug> (ttyACM0) device open count is 3 (close) <debug> (ttyACM0): --> 'ATD*99***1#<CR>' <debug> (ttyACM0): <-- '<CR><LF>CONNECT<CR><LF>' <debug> (ttyACM0) device open count is 2 (close) <debug> (ttyACM0): port now connected <debug> Connected bearer '/org/freedesktop/ModemManager1/Bearer/0' <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connecting -> connected) <info> Simple connect state (8/8): All done <debug> (net/ppp0): could not get port's parent device <debug> Disconnecting bearer '/org/freedesktop/ModemManager1/Bearer/0' <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connected -> disconnecting) <debug> Sending PDP context deactivation in secondary port... <debug> (ttyACM3) device open count is 2 (open) <debug> (ttyACM3): --> 'AT+CGACT=0,1<CR>' <debug> loading access technology (Telit)... <debug> (ttyACM3) device open count is 3 (open) <debug> loading signal quality... <debug> (ttyACM3) device open count is 4 (open) <debug> (ttyACM3): <-- '<CR><LF>OK<CR><LF>' <debug> Reopening data port (ttyACM0)... <debug> (ttyACM0) reopening port (2) <debug> (ttyACM0) device open count is 1 (close) <debug> (ttyACM0) device open count is 0 (close) <debug> (ttyACM0) closing serial port... <debug> (ttyACM0): port now disconnected <debug> (ttyACM0) serial port closed <debug> (ttyACM3) device open count is 3 (close) <debug> (ttyACM3): --> 'AT#PSNT?<CR>' <debug> (ttyACM3): <-- '<CR><LF>' <debug> (ttyACM3): <-- '#PSNT: 0,0<CR><LF><CR><LF>OK<CR><LF>' <debug> (ttyACM3) device open count is 2 (close) <debug> (ttyACM3): --> 'AT+CIND?<CR>' <debug> (ttyACM3): <-- '<CR><LF>' <debug> (ttyACM3): <-- '+CIND: 0,0,1,0,0,0,0,0,4<CR><LF><CR><LF>OK<CR><LF>' <debug> (ttyACM3) device open count is 3 (open) <debug> (ttyACM3) device open count is 2 (close) <debug> (ttyACM3): --> 'AT+CSQ<CR>' <debug> (ttyACM3): <-- '<CR><LF>' <debug> (ttyACM3): <-- '+CSQ: 23,0<CR><LF><CR><LF>OK<CR><LF>' <debug> (ttyACM3) device open count is 1 (close) <debug> Modem /org/freedesktop/ModemManager1/Modem/0: signal quality updated (74) <debug> (ttyACM0) opening serial port... <debug> (ttyACM0) device open count is 1 (open) <debug> (ttyACM0): running init sequence... <debug> (ttyACM0) device open count is 2 (open) <debug> Flashing data port (ttyACM0)... <debug> (ttyACM0): --> 'ATE0<CR>' <debug> (ttyACM0) device open count is 1 (close) <debug> PDP disconnection already sent <debug> (ttyACM0): <-- '<CR><LF>OK<CR><LF>' <debug> Disconnected bearer '/org/freedesktop/ModemManager1/Bearer/0' <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (disconnecting -> registered) <debug> (ttyACM0): --> 'ATV1<CR>' <debug> (ttyACM0): <-- '<CR><LF>OK<CR><LF>' <debug> (ttyACM0): --> 'AT+CMEE=1<CR>' <debug> (ttyACM0): <-- '<CR><LF>OK<CR><LF>' <debug> (ttyACM0): --> 'ATX4<CR>' <debug> (ttyACM0): <-- '<CR><LF>OK<CR><LF>' <debug> (ttyACM0): --> 'AT&C1<CR>' <debug> (ttyACM0): <-- '<CR><LF>OK<CR><LF>'
There is no plan to address this.. Will re-open if a requirement for this modem comes up. -Sushil