I have a TOBY-R200 modem from u-blox and there has been a new firmware released, version 30.33. Other modems from u-blox were also updated at the same time that may have the same issue. As of this version the modem comes with a default set of CIDs, one at CID 1 and another at CID 31 as can be seen from the output of the AT+CGDCONT? command. This new CID configuration is preventing the modem from creating a bearer with the APN settings configured through NetworkManager or from a simple connect.
It looks like ModemManager takes the highest numbered CID it sees and assumes it needs to use the next one available or if at the max CID then reuse it. In the case of the TOBY-R200, only CID 1 and 31 are used so ModemManager tries to reuse CID 31 but the modem reports an error since it won't let this CID be erased/overwritten. Then ModemManager tries to connect to search for the PDP context that it just tried to create and fails the simple connect. It seems that ModemManager does not use the CIDs 2-30 or even try to. Before the firmware update, the modem only used CID 1 and possibly CID 2 by default so this issue did not occur. Here is the log output when this issue happens: May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.2807] device (ttyACM0): Activation: starting connection 'Aeris' (83187ceb-ad3a-4af8-92d8-7a255d9c5e3f) May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.2842] audit: op="connection-activate" uuid="83187ceb-ad3a-4af8-92d8-7a255d9c5e3f" name="Aeris" pid=548 uid=0 result="success" May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.2917] device (ttyACM0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed') May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.3213] manager: NetworkManager state is now CONNECTING May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.337028] Simple connect started... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.337522] PIN: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.337663] Operator ID: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.337757] Allowed roaming: yes May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.337845] APN: iot.aer.net May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.337942] IP family: ipv4v6 May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.338023] Allowed authentication: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.338100] User: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.338179] Password: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.338257] Number: *99# May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.338317] Simple connect state (4/8): Wait to get fully enabled May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.338638] Simple connect state (5/8): Register May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.338896] Already registered in network '(null)', automatic registration not launched... May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.340388] Simple connect state (6/8): Bearer May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.340815] Creating new bearer... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.341586] u-blox: checking current USB profile... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.342089] (ttyACM0) device open count is 2 (open) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.342732] (ttyACM0): --> 'AT+UUSBCONF?<CR>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.347371] (ttyACM0): <-- '<CR><LF>+CME ERROR: 100<CR><LF>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.348026] Got failure code 100: Unknown error May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.348471] u-blox: couldn't load current usb profile: Unknown error May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.348866] u-blox: checking current networking mode... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.349282] (ttyACM0) device open count is 3 (open) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.349750] (ttyACM0) device open count is 2 (close) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.350298] (ttyACM0): --> 'AT+UBMCONF?<CR>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.353866] (ttyACM0): <-- '<CR><LF>+CME ERROR: 100<CR><LF>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.354516] Got failure code 100: Unknown error May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.354956] u-blox: couldn't load current networking mode: Unknown error May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.355296] u-blox: creating generic broadband bearer... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.358093] (ttyACM0) device open count is 3 (open) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.358691] (ttyACM0) device open count is 2 (close) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.359528] u-blox: new generic broadband bearer created at DBus path '/org/freedesktop/ModemManager1/Bearer/0' May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.363845] Simple connect state (7/8): Connect May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.364414] Connecting bearer '/org/freedesktop/ModemManager1/Bearer/0' May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.364894] Modem /org/freedesktop/ModemManager1/Modem/0: state changed (registered -> connecting) May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.3715] modem["ttyACM0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.372988] Launching 3GPP connection attempt with APN 'iot.aer.net' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.373586] Looking for best CID... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.374031] (ttyACM0) device open count is 3 (open) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.374628] (ttyACM0) device open count is 2 (close) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.375122] (ttyACM0): --> 'AT+CGDCONT?<CR>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.379246] (ttyACM0): <-- '<CR><LF>+CGDCONT: 1,"IPV4V6","nxtgenphone","0.0.0.0 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,0,0<CR><LF><CR><LF>+CGDCONT: 31,"IPV4V6","phone","0.0.0.0 0.0.0.0.0.0.0.0.0.0.0 May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.380358] Found '2' PDP contexts May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.380779] PDP context [cid=1] [type='ipv4v6'] [apn='nxtgenphone'] May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.381084] PDP context [cid=31] [type='ipv4v6'] [apn='phone'] May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.382049] Re-using CID 31 (max) with PDP type 'ipv4v6' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.382665] (ttyACM0) device open count is 3 (open) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.383199] (ttyACM0) device open count is 2 (close) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.383777] (ttyACM0): --> 'AT+CGDCONT=31,"IPV4V6","iot.aer.net"<CR>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.386978] (ttyACM0): <-- '<CR><LF>+CME ERROR: 4<CR><LF>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.387620] Got failure code 4: Operation not supported May 28 16:04:39 canect2 daemon.warn ModemManager[305]: <warn> [1559059479.388059] Couldn't initialize PDP context with our APN: 'Operation not supported' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.388417] Couldn't connect bearer '/org/freedesktop/ModemManager1/Bearer/0': 'Operation not supported' May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.388850] Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connecting -> registered) May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.3956] modem["ttyACM0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.397362] Couldn't connect bearer: 'Operation not supported' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.403972] (ttyACM0) device open count is 1 (close) May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.405033] Simple connect started... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.405458] PIN: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.405757] Operator ID: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.406025] Allowed roaming: yes May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.406277] APN: iot.aer.net May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.406525] IP family: ipv4 May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.406774] Allowed authentication: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.407017] User: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.407443] Password: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.407817] Number: *99# May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.408106] Simple connect state (4/8): Wait to get fully enabled May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.408648] Simple connect state (5/8): Register May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.409257] Already registered in network '(null)', automatic registration not launched... May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.409786] Simple connect state (6/8): Bearer May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.410210] Creating new bearer... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.414363] Deleted disconnected bearer at '/org/freedesktop/ModemManager1/Bearer/0' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.414855] Removing from DBus bearer at '/org/freedesktop/ModemManager1/Bearer/0' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.415621] u-blox: creating generic broadband bearer... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.417069] (ttyACM0) device open count is 2 (open) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.418034] u-blox: new generic broadband bearer created at DBus path '/org/freedesktop/ModemManager1/Bearer/1' May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.422166] Simple connect state (7/8): Connect May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.422731] Connecting bearer '/org/freedesktop/ModemManager1/Bearer/1' May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.423214] Modem /org/freedesktop/ModemManager1/Modem/0: state changed (registered -> connecting) May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.4299] modem["ttyACM0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.431289] Launching 3GPP connection attempt with APN 'iot.aer.net' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.431800] Looking for best CID... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.432214] (ttyACM0) device open count is 3 (open) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.432740] (ttyACM0) device open count is 2 (close) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.433209] (ttyACM0): --> 'AT+CGDCONT?<CR>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.437002] (ttyACM0): <-- '<CR><LF>+CGDCONT: 1,"IPV4V6","nxtgenphone","0.0.0.0 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,0,0<CR><LF><CR><LF>+CGDCONT: 31,"IPV4V6","phone","0.0.0.0 0.0.0.0.0.0.0.0.0.0.0 May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.438060] Found '2' PDP contexts May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.438470] PDP context [cid=1] [type='ipv4v6'] [apn='nxtgenphone'] May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.438781] PDP context [cid=31] [type='ipv4v6'] [apn='phone'] May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.439665] Re-using CID 31 (max) with PDP type 'ipv4' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.440214] (ttyACM0) device open count is 3 (open) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.440783] (ttyACM0) device open count is 2 (close) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.441296] (ttyACM0): --> 'AT+CGDCONT=31,"IP","iot.aer.net"<CR>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.444619] (ttyACM0): <-- '<CR><LF>+CME ERROR: 4<CR><LF>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.445296] Got failure code 4: Operation not supported May 28 16:04:39 canect2 daemon.warn ModemManager[305]: <warn> [1559059479.445749] Couldn't initialize PDP context with our APN: 'Operation not supported' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.446118] Couldn't connect bearer '/org/freedesktop/ModemManager1/Bearer/1': 'Operation not supported' May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.446560] Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connecting -> registered) May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.4532] modem["ttyACM0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.455028] Couldn't connect bearer: 'Operation not supported' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.461608] (ttyACM0) device open count is 1 (close) May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.462639] Simple connect started... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.463058] PIN: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.463359] Operator ID: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.463698] Allowed roaming: yes May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.463969] APN: iot.aer.net May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.464226] IP family: ipv6 May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.464475] Allowed authentication: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.464721] User: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.464960] Password: unspecified May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.465193] Number: *99# May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.465421] Simple connect state (4/8): Wait to get fully enabled May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.465920] Simple connect state (5/8): Register May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.466422] Already registered in network '(null)', automatic registration not launched... May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.466935] Simple connect state (6/8): Bearer May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.467328] Creating new bearer... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.471241] Deleted disconnected bearer at '/org/freedesktop/ModemManager1/Bearer/1' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.471735] Removing from DBus bearer at '/org/freedesktop/ModemManager1/Bearer/1' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.472358] u-blox: creating generic broadband bearer... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.473899] (ttyACM0) device open count is 2 (open) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.474855] u-blox: new generic broadband bearer created at DBus path '/org/freedesktop/ModemManager1/Bearer/2' May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.478975] Simple connect state (7/8): Connect May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.479544] Connecting bearer '/org/freedesktop/ModemManager1/Bearer/2' May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.480032] Modem /org/freedesktop/ModemManager1/Modem/0: state changed (registered -> connecting) May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.4867] modem["ttyACM0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.488173] Launching 3GPP connection attempt with APN 'iot.aer.net' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.488686] Looking for best CID... May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.489112] (ttyACM0) device open count is 3 (open) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.489647] (ttyACM0) device open count is 2 (close) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.490114] (ttyACM0): --> 'AT+CGDCONT?<CR>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.493890] (ttyACM0): <-- '<CR><LF>+CGDCONT: 1,"IPV4V6","nxtgenphone","0.0.0.0 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,0,0<CR><LF><CR><LF>+CGDCONT: 31,"IPV4V6","phone","0.0.0.0 0.0.0.0.0.0.0.0.0.0.0 May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.494955] Found '2' PDP contexts May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.495369] PDP context [cid=1] [type='ipv4v6'] [apn='nxtgenphone'] May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.495678] PDP context [cid=31] [type='ipv4v6'] [apn='phone'] May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.496562] Re-using CID 31 (max) with PDP type 'ipv6' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.497100] (ttyACM0) device open count is 3 (open) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.497670] (ttyACM0) device open count is 2 (close) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.498185] (ttyACM0): --> 'AT+CGDCONT=31,"IPV6","iot.aer.net"<CR>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.501354] (ttyACM0): <-- '<CR><LF>+CME ERROR: 4<CR><LF>' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.501996] Got failure code 4: Operation not supported May 28 16:04:39 canect2 daemon.warn ModemManager[305]: <warn> [1559059479.502436] Couldn't initialize PDP context with our APN: 'Operation not supported' May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.502825] Couldn't connect bearer '/org/freedesktop/ModemManager1/Bearer/2': 'Operation not supported' May 28 16:04:39 canect2 daemon.info ModemManager[305]: <info> [1559059479.503280] Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connecting -> registered) May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.5100] modem["ttyACM0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested) May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.511741] Couldn't connect bearer: 'Operation not supported' May 28 16:04:39 canect2 daemon.warn NetworkManager[312]: <warn> [1559059479.5149] modem-broadband[ttyACM0]: failed to connect modem: Operation not supported May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.5151] device (ttyACM0): state change: prepare -> failed (reason 'unknown', sys-iface-state: 'managed') May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.5199] manager: NetworkManager state is now CONNECTED_LOCAL May 28 16:04:39 canect2 daemon.debug ModemManager[305]: <debug> [1559059479.534045] (ttyACM0) device open count is 1 (close) May 28 16:04:39 canect2 daemon.warn NetworkManager[312]: <warn> [1559059479.5596] device (ttyACM0): Activation: failed for connection 'Aeris' May 28 16:04:39 canect2 daemon.warn NetworkManager[312]: <warn> [1559059479.5606] settings-connection[0x10e9168,83187ceb-ad3a-4af8-92d8-7a255d9c5e3f]: error saving timestamp to file '/var/lib/NetworkManager/timestamps': Failed to create file "/var/lib/NetworkManager/t May 28 16:04:39 canect2 daemon.info NetworkManager[312]: <info> [1559059479.5740] device (ttyACM0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed') May 28 16:04:49 canect2 daemon.debug ModemManager[305]: <debug> [1559059489.884088] loading signal quality... May 28 16:04:49 canect2 daemon.debug ModemManager[305]: <debug> [1559059489.884415] (ttyACM0) device open count is 2 (open) May 28 16:04:49 canect2 daemon.debug ModemManager[305]: <debug> [1559059489.884725] (ttyACM0): --> 'AT+CIND?<CR>' May 28 16:04:49 canect2 daemon.debug ModemManager[305]: <debug> [1559059489.888515] (ttyACM0): <-- '<CR><LF>+CIND: 5,2,1,0,0,0,0,0,2,0,0,0<CR><LF><CR><LF>OK<CR><LF>' May 28 16:04:49 canect2 daemon.debug ModemManager[305]: <debug> [1559059489.889518] Modem /org/freedesktop/ModemManager1/Modem/0: signal quality updated (40) May 28 16:04:49 canect2 daemon.debug ModemManager[305]: <debug> [1559059489.889722] Periodic signal quality checks scheduled in 30s May 28 16:04:49 canect2 daemon.debug ModemManager[305]: <debug> [1559059489.889877] (ttyACM0) device open count is 1 (close) Best regards, Matthew Starr _______________________________________________ ModemManager-devel mailing list ModemManager-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
