Sep 16 12:51:17 NetworkManager[4243]: [1537091477.9893] platform-linux: udev-add[usbmodem,4]: device added Sep 16 12:51:17 NetworkManager[4243]: [1537091477.9894] platform: signal: link changed: 4: usbmodem mtu 1500 arp 1 wwan? init addr XX:XX:XX:XX:XX:XX driver huawei_cdc_ncm rx:12053,10017154 tx:8148,1072323 Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2777] manager: usbmodem: factory failed to create device: Device factory NMWwanFactory ignores device usbmodem Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2862] modem-manager: ModemManager available Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2866] device[0x55b0924cac50] (ttyUSB0): constructed (NMDeviceModem) Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2866] device[0x55b0924cac50] (ttyUSB0): start setup of NMDeviceModem, kernel ifindex 0 Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2866] device[0x55b0924cac50] (ttyUSB0): unmanaged: flags set to [platform-init,!by-type=0x10/0x18/unmanaged/unrealized], set-managed [by-type=0x8]) Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2866] device[0x55b0924cac50] (ttyUSB0): unmanaged: flags set to [platform-init,user-conf,!by-type=0x210/0x218/unmanaged/unrealized], set-unmanaged [user-conf=0x200]) Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2866] device[0x55b0924cac50] (ttyUSB0): unmanaged: flags set to [platform-init,user-conf,!by-type,!user-settings=0x210/0x258/unmanaged/unrealized], set-managed [user-settings=0x40]) Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2866] device[0x55b0924cac50] (ttyUSB0): unmanaged: flags set to [user-conf,!by-type,!platform-init,!user-settings=0x200/0x258/manageable/unrealized], set-managed [platform-init=0x10]) Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2867] manager: rfkill: WWAN hw-enabled 1 sw-enabled 1 Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2867] modem["ttyUSB0"]: cannot enable modem: already enabled Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2867] device[0x55b0924cac50] (ttyUSB0): unmanaged: flags set to [user-conf,!sleeping,!by-type,!platform-init,!user-settings=0x200/0x259/manageable/unrealized], set-managed [sleeping=0x1]) Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2867] dbus-object[0x55b0924cac50]: export: "/org/freedesktop/NetworkManager/Devices/11" Sep 16 12:51:18 NetworkManager[4243]: [1537091478.2869] manager: (ttyUSB0): new Broadband device (/org/freedesktop/NetworkManager/Devices/11)