Итак, опытным путем определил виновника, как ни странно это NetworkManager

Выполняю команду:
sudo service network-manager stopПодключаю модем.
Через несколько секунд оба индикатора модема светятся, а dmesg и lsusb показывают, что модем подключен.
Запускаю
sudo service network-manager start и модем уходит в ребут (синий индикатор гаснет). Затем цикл.
Осталось понять, что в NetworkManager наворотили с версии 0.8 к версии 0.9.8?
/var/log/syslog (NetworkManager запущен):Jun 18 00:40:44 localhost kernel: [ 1852.976192] usb 5-1: new full-speed USB device number 5 using uhci_hcd
Jun 18 00:40:44 localhost kernel: [ 1853.206312] usb 5-1: New USB device found, idVendor=16d8, idProduct=5533
Jun 18 00:40:44 localhost kernel: [ 1853.206323] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jun 18 00:40:44 localhost kernel: [ 1853.206330] usb 5-1: Product: CMOTECH CDMA Technologies
Jun 18 00:40:44 localhost kernel: [ 1853.206335] usb 5-1: Manufacturer: CMOTECH CO., LTD.
Jun 18 00:40:44 localhost kernel: [ 1853.206341] usb 5-1: SerialNumber: Serial Number
Jun 18 00:40:44 localhost kernel: [ 1853.209330] cdc_acm 5-1:1.0: ttyACM0: USB ACM device
Jun 18 00:40:44 localhost mtp-probe: checking bus 5, device 5: "/sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1"
Jun 18 00:40:44 localhost mtp-probe: bus: 5, device: 5 was not an MTP device
Jun 18 00:40:44 localhost modem-manager[7229]: <info> (ttyACM0) opening serial port...
Jun 18 00:40:51 localhost modem-manager[7229]: <info> (ttyACM0) closing serial port...
Jun 18 00:40:51 localhost modem-manager[7229]: <info> (ttyACM0) serial port closed
Jun 18 00:40:51 localhost modem-manager[7229]: <info> (Generic): CDMA modem /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1 claimed port ttyACM0
Jun 18 00:40:51 localhost modem-manager[7229]: <info> (ttyACM0) opening serial port...
Jun 18 00:40:51 localhost NetworkManager[7231]: <warn> (ttyACM0): failed to look up interface index
Jun 18 00:40:51 localhost NetworkManager[7231]: <info> (ttyACM0): new CDMA/EVDO device (driver: 'cdc_acm' ifindex: 0)
Jun 18 00:40:51 localhost NetworkManager[7231]: <info> (ttyACM0): exported as /org/freedesktop/NetworkManager/Devices/3
Jun 18 00:40:51 localhost NetworkManager[7231]: <info> (ttyACM0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Jun 18 00:40:51 localhost NetworkManager[7231]: <info> (ttyACM0): deactivating device (reason 'managed') [2]
Jun 18 00:40:51 localhost NetworkManager[7231]: <info> (ttyACM0): device state change: unavailable -> disconnected (reason 'none') [20 30 0]
Jun 18 00:40:52 localhost modem-manager[7229]: <info> (ttyACM0) closing serial port...
Jun 18 00:40:52 localhost modem-manager[7229]: <info> (ttyACM0) serial port closed
Jun 18 00:40:52 localhost modem-manager[7229]: mm_serial_port_close: assertion `priv->open_count > 0' failed
Jun 18 00:40:52 localhost modem-manager[7229]: <info> Modem /org/freedesktop/ModemManager/Modems/1: Equipment identifier set ()
Jun 18 00:40:52 localhost modem-manager[7229]: mm_serial_port_close: assertion `priv->open_count > 0' failed
Jun 18 00:40:52 localhost kernel: [ 1861.392108] usb 5-1: USB disconnect, device number 5
Jun 18 00:40:52 localhost modem-manager[7229]: <info> (tty/ttyACM0): released by modem /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1
Jun 18 00:40:52 localhost NetworkManager[7231]: <info> (ttyACM0): device state change: disconnected -> unmanaged (reason 'removed') [30 10 36]
Jun 18 00:40:52 localhost NetworkManager[7231]: <info> (ttyACM0): cleaning up...
Jun 18 00:40:52 localhost NetworkManager[7231]: <info> (ttyACM0): taking down device.
Jun 18 00:40:52 localhost NetworkManager[7231]: nm_system_iface_set_up: assertion `ifindex > 0' failed
/var/log/syslog (NetworkManager остановлен):Jun 18 00:50:36 localhost kernel: [ 2445.396419] usb 5-1: new full-speed USB device number 7 using uhci_hcd
Jun 18 00:50:36 localhost kernel: [ 2445.625791] usb 5-1: New USB device found, idVendor=16d8, idProduct=5533
Jun 18 00:50:36 localhost kernel: [ 2445.625802] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jun 18 00:50:36 localhost kernel: [ 2445.625808] usb 5-1: Product: CMOTECH CDMA Technologies
Jun 18 00:50:36 localhost kernel: [ 2445.625814] usb 5-1: Manufacturer: CMOTECH CO., LTD.
Jun 18 00:50:36 localhost kernel: [ 2445.625819] usb 5-1: SerialNumber: Serial Number
Jun 18 00:50:36 localhost kernel: [ 2445.628568] cdc_acm 5-1:1.0: ttyACM0: USB ACM device
Jun 18 00:50:36 localhost mtp-probe: checking bus 5, device 7: "/sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1"
Jun 18 00:50:36 localhost mtp-probe: bus: 5, device: 7 was not an MTP device
Судя по логам modem-manager зачем-то пытается открыть порт:
modem-manager[7229]: <info> (ttyACM0) opening serial port...
Вывод /var/log/syslog на Ubuntu 10.04.4 LTS:Jun 18 01:01:28 ubuntu kernel: [ 1042.290380] usb 1-2.2: new full speed USB device using ehci_hcd and address 8
Jun 18 01:01:28 ubuntu kernel: [ 1042.312109] hub 1-2:1.0: unable to enumerate USB device on port 2
Jun 18 01:01:28 ubuntu kernel: [ 1042.550286] usb 1-2.2: new full speed USB device using ehci_hcd and address 9
Jun 18 01:01:29 ubuntu kernel: [ 1042.690301] usb 1-2.2: configuration #1 chosen from 1 choice
Jun 18 01:01:29 ubuntu kernel: [ 1042.726248] cdc_acm 1-2.2:1.0: ttyACM0: USB ACM device
Jun 18 01:01:29 ubuntu kernel: [ 1042.727761] usbcore: registered new interface driver cdc_acm
Jun 18 01:01:29 ubuntu kernel: [ 1042.727786] cdc_acm: v0.26:USB Abstract Control Model driver for USB modems and ISDN adapters
Jun 18 01:01:29 ubuntu modem-manager: (ttyACM0) opening serial device...
Jun 18 01:01:29 ubuntu modem-manager: (ttyACM0): probe requested by plugin 'Generic'
Jun 18 01:01:33 ubuntu modem-manager: (ttyACM0) closing serial device...
Jun 18 01:01:33 ubuntu modem-manager: (Generic): CDMA modem /sys/devices/pci0000:00/0000:00:13.5/usb1/1-2/1-2.2 claimed port ttyACM0
Jun 18 01:01:33 ubuntu modem-manager: Added modem /sys/devices/pci0000:00/0000:00:13.5/usb1/1-2/1-2.2
Jun 18 01:01:33 ubuntu modem-manager: Exported modem /sys/devices/pci0000:00/0000:00:13.5/usb1/1-2/1-2.2 as /org/freedesktop/ModemManager/Modems/0
Jun 18 01:01:33 ubuntu NetworkManager: <info> (ttyACM0): new CDMA device (driver: 'cdc_acm')
Jun 18 01:01:33 ubuntu NetworkManager: <info> (ttyACM0): exported as /org/freedesktop/NetworkManager/Devices/1
Jun 18 01:01:33 ubuntu NetworkManager: <info> (ttyACM0): now managed
Jun 18 01:01:33 ubuntu NetworkManager: <info> (ttyACM0): device state change: 1 -> 2 (reason 2)
Jun 18 01:01:33 ubuntu NetworkManager: <info> (ttyACM0): deactivating device (reason: 2).
Jun 18 01:01:33 ubuntu NetworkManager: <info> (ttyACM0): device state change: 2 -> 3 (reason 0)
Остановил NetworkManager и Modem-Manager:
sudo service network-manager start
sudo killall modem-manager
Выполнил
sudo modem-manager --debug 2>&1 | tee /tmp/modem.log.txt
modem-manager[9545]: <info> [1371507429.783262] [main.c:167] main(): ModemManager (version 0.6.0.0) starting...
modem-manager[9545]: <info> [1371507429.789617] [mm-manager.c:158] found_plugin(): Loaded plugin 'MotoC'
modem-manager[9545]: <info> [1371507429.789662] [mm-manager.c:158] found_plugin(): Loaded plugin 'Nokia'
modem-manager[9545]: <info> [1371507429.789674] [mm-manager.c:158] found_plugin(): Loaded plugin 'Longcheer'
modem-manager[9545]: <info> [1371507429.789684] [mm-manager.c:158] found_plugin(): Loaded plugin 'Option'
modem-manager[9545]: <info> [1371507429.789695] [mm-manager.c:158] found_plugin(): Loaded plugin 'Gobi'
modem-manager[9545]: <info> [1371507429.789705] [mm-manager.c:158] found_plugin(): Loaded plugin 'Samsung'
modem-manager[9545]: <info> [1371507429.789716] [mm-manager.c:158] found_plugin(): Loaded plugin 'Linktop'
modem-manager[9545]: <info> [1371507429.789726] [mm-manager.c:158] found_plugin(): Loaded plugin 'SimTech'
modem-manager[9545]: <info> [1371507429.789735] [mm-manager.c:158] found_plugin(): Loaded plugin 'Huawei'
modem-manager[9545]: <info> [1371507429.789746] [mm-manager.c:158] found_plugin(): Loaded plugin 'Wavecom'
modem-manager[9545]: <info> [1371507429.789756] [mm-manager.c:158] found_plugin(): Loaded plugin 'Option High-Speed'
modem-manager[9545]: <info> [1371507429.789766] [mm-manager.c:158] found_plugin(): Loaded plugin 'X22X'
modem-manager[9545]: <info> [1371507429.789776] [mm-manager.c:158] found_plugin(): Loaded plugin 'ZTE'
modem-manager[9545]: <info> [1371507429.789790] [mm-manager.c:158] found_plugin(): Loaded plugin 'Novatel'
modem-manager[9545]: <info> [1371507429.789800] [mm-manager.c:158] found_plugin(): Loaded plugin 'Sierra'
modem-manager[9545]: <info> [1371507429.789810] [mm-manager.c:158] found_plugin(): Loaded plugin 'AnyData'
modem-manager[9545]: <info> [1371507429.789823] [mm-manager.c:158] found_plugin(): Loaded plugin 'Ericsson MBM'
modem-manager[9545]: <info> [1371507429.789836] [mm-manager.c:158] found_plugin(): Loaded plugin 'Iridium'
modem-manager[9545]: <info> [1371507429.789846] [mm-manager.c:158] found_plugin(): Loaded plugin 'Cinterion'
modem-manager[9545]: <info> [1371507429.789859] [mm-manager.c:158] found_plugin(): Loaded plugin 'Generic'
modem-manager[9545]: <info> [1371507429.789872] [mm-manager.c:210] load_plugins(): Successfully loaded 20 plugins
modem-manager[9545]: <debug> [1371507429.790178] [mm-manager.c:1057] mm_manager_start(): Starting device scan...
modem-manager[9545]: <debug> [1371507429.792699] [mm-manager.c:875] device_added(): (tty/ttyS0): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.793153] [mm-manager.c:875] device_added(): (tty/ttyS1): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.793417] [mm-manager.c:875] device_added(): (tty/ttyS10): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.793670] [mm-manager.c:875] device_added(): (tty/ttyS11): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.793931] [mm-manager.c:875] device_added(): (tty/ttyS12): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.794185] [mm-manager.c:875] device_added(): (tty/ttyS13): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.794433] [mm-manager.c:875] device_added(): (tty/ttyS14): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.794637] [mm-manager.c:875] device_added(): (tty/ttyS15): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.794831] [mm-manager.c:875] device_added(): (tty/ttyS16): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.795025] [mm-manager.c:875] device_added(): (tty/ttyS17): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.795260] [mm-manager.c:875] device_added(): (tty/ttyS18): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.795525] [mm-manager.c:875] device_added(): (tty/ttyS19): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.795789] [mm-manager.c:875] device_added(): (tty/ttyS2): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.796057] [mm-manager.c:875] device_added(): (tty/ttyS20): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.796323] [mm-manager.c:875] device_added(): (tty/ttyS21): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.796587] [mm-manager.c:875] device_added(): (tty/ttyS22): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.796848] [mm-manager.c:875] device_added(): (tty/ttyS23): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.797056] [mm-manager.c:875] device_added(): (tty/ttyS24): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.797215] [mm-manager.c:875] device_added(): (tty/ttyS25): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.797405] [mm-manager.c:875] device_added(): (tty/ttyS26): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.797562] [mm-manager.c:875] device_added(): (tty/ttyS27): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.797716] [mm-manager.c:875] device_added(): (tty/ttyS28): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.797871] [mm-manager.c:875] device_added(): (tty/ttyS29): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.798025] [mm-manager.c:875] device_added(): (tty/ttyS3): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.798180] [mm-manager.c:875] device_added(): (tty/ttyS30): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.798332] [mm-manager.c:875] device_added(): (tty/ttyS31): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.798485] [mm-manager.c:875] device_added(): (tty/ttyS4): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.798637] [mm-manager.c:875] device_added(): (tty/ttyS5): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.798791] [mm-manager.c:875] device_added(): (tty/ttyS6): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.798954] [mm-manager.c:875] device_added(): (tty/ttyS7): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.799132] [mm-manager.c:875] device_added(): (tty/ttyS8): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.799290] [mm-manager.c:875] device_added(): (tty/ttyS9): port's parent platform driver is not whitelisted
modem-manager[9545]: <debug> [1371507429.800139] [mm-manager.c:859] device_added(): (tty/ttyprintk): could not get port's parent device
modem-manager[9545]: <debug> [1371507429.804142] [mm-manager.c:1075] mm_manager_start(): Finished device scan...
modem-manager[9545]: <info> [1371507481.312609] [mm-serial-port.c:805] mm_serial_port_open(): (ttyACM0) opening serial port...
modem-manager[9545]: <debug> [1371507481.315271] [mm-serial-port.c:874] mm_serial_port_open(): (ttyACM0) device open count is 1 (open)
modem-manager[9545]: <debug> [1371507481.315328] [mm-plugin-base.c:1065] try_open(): (ttyACM0): probe requested by plugin 'Iridium'
modem-manager[9545]: <debug> [1371507481.417300] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+GCAP<CR>'
modem-manager[9545]: <debug> [1371507483.446511] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>$$BOOT ALERT<CR><LF>'
modem-manager[9545]: <debug> [1371507485.200489] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+GCAP<CR>'
modem-manager[9545]: <debug> [1371507485.900766] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- 'AT+GCAP'
modem-manager[9545]: <debug> [1371507485.909322] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR>'
modem-manager[9545]: <debug> [1371507485.915317] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>+GCAP: +IS-856, +CIS707A, +MS, +ES, +DS, +FCLASS<CR><LF><CR><LF>OK<CR><LF>'
modem-manager[9545]: <debug> [1371507485.915527] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+CGMI<CR>'
modem-manager[9545]: <debug> [1371507486.615775] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- 'AT+CGMI'
modem-manager[9545]: <debug> [1371507486.631349] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR>'
modem-manager[9545]: <debug> [1371507486.644316] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>ERROR<CR><LF>'
modem-manager[9545]: <debug> [1371507486.644440] [mm-serial-parsers.c:448] mm_serial_parser_v1_parse(): Got failure code 100: Unknown error
modem-manager[9545]: <debug> [1371507486.644538] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+GMI<CR>'
modem-manager[9545]: <debug> [1371507487.244768] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- 'AT+GMI'
modem-manager[9545]: <debug> [1371507487.253337] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR>'
modem-manager[9545]: <debug> [1371507487.259357] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>+GMI: CMOTech, Incorporated<CR><LF><CR><LF>OK<CR><LF>'
modem-manager[9545]: <debug> [1371507487.259651] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+CGMM<CR>'
modem-manager[9545]: <debug> [1371507487.959945] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- 'AT+CGMM'
modem-manager[9545]: <debug> [1371507487.972365] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR>'
modem-manager[9545]: <debug> [1371507487.986369] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>ERROR<CR><LF>'
modem-manager[9545]: <debug> [1371507487.986540] [mm-serial-parsers.c:448] mm_serial_parser_v1_parse(): Got failure code 100: Unknown error
modem-manager[9545]: <debug> [1371507487.986721] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+GMM<CR>'
modem-manager[9545]: <debug> [1371507488.586969] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- 'AT+GMM'
modem-manager[9545]: <debug> [1371507488.598302] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR>'
modem-manager[9545]: <debug> [1371507488.604356] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>+GMM: Model : CCx-ExxxU<CR><LF><CR><LF>OK<CR><LF>'
modem-manager[9545]: <debug> [1371507488.604665] [mm-serial-port.c:908] mm_serial_port_close(): (ttyACM0) device open count is 0 (close)
modem-manager[9545]: <info> [1371507488.604811] [mm-serial-port.c:923] mm_serial_port_close(): (ttyACM0) closing serial port...
modem-manager[9545]: <info> [1371507488.622291] [mm-serial-port.c:944] mm_serial_port_close(): (ttyACM0) serial port closed
modem-manager[9545]: <debug> [1371507488.624901] [mm-modem-base.c:927] grab_port(): (ttyACM0) type AT claimed by /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1
modem-manager[9545]: <info> [1371507488.625297] [mm-manager.c:630] do_grab_port(): (Generic): CDMA modem /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1 claimed port ttyACM0
modem-manager[9545]: <debug> [1371507488.625441] [mm-manager.c:362] add_modem(): Added modem /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1
modem-manager[9545]: <debug> [1371507488.625572] [mm-manager.c:298] check_export_modem(): (tty/ttyACM0): outstanding support task prevents export of /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1
modem-manager[9545]: <debug> [1371507488.625780] [mm-modem-base.c:208] log_port(): (/sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1) tty/ttyACM0 primary
modem-manager[9545]: <debug> [1371507488.625904] [mm-modem-base.c:208] log_port(): (/sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1) tty/ttyACM0 data
modem-manager[9545]: <info> [1371507488.626038] [mm-serial-port.c:805] mm_serial_port_open(): (ttyACM0) opening serial port...
modem-manager[9545]: <debug> [1371507488.627314] [mm-serial-port.c:874] mm_serial_port_open(): (ttyACM0) device open count is 1 (open)
modem-manager[9545]: <debug> [1371507488.627468] [mm-serial-port.c:874] mm_serial_port_open(): (ttyACM0) device open count is 2 (open)
modem-manager[9545]: <debug> [1371507488.627823] [mm-manager.c:313] check_export_modem(): Exported modem /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1 as /org/freedesktop/ModemManager/Modems/0
modem-manager[9545]: <debug> [1371507488.627979] [mm-manager.c:327] check_export_modem(): (/org/freedesktop/ModemManager/Modems/0): VID 0x16D8 PID 0x5533 (usb)
modem-manager[9545]: <debug> [1371507488.628113] [mm-manager.c:328] check_export_modem(): (/org/freedesktop/ModemManager/Modems/0): data port is ttyACM0
modem-manager[9545]: <debug> [1371507488.628395] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'ATE0<CR>'
modem-manager[9545]: <debug> [1371507488.645491] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- 'ATE0<CR>'
modem-manager[9545]: <debug> [1371507488.647361] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>OK<CR><LF>'
modem-manager[9545]: <debug> [1371507488.647648] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+GMI<CR>'
modem-manager[9545]: <debug> [1371507488.666480] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>+GMI: CMOTech, Incorporated<CR><LF><CR><LF>OK<CR><LF>'
modem-manager[9545]: <debug> [1371507488.666844] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+GMM<CR>'
modem-manager[9545]: <debug> [1371507488.685367] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>+GMM: Model : CCx-ExxxU<CR><LF><CR><LF>OK<CR><LF>'
modem-manager[9545]: <debug> [1371507488.685694] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+GMR<CR>'
modem-manager[9545]: <debug> [1371507488.715371] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>+GMR: S/W VER: CCUTSU02<CR><LF><CR><LF>OK<CR><LF>'
modem-manager[9545]: <debug> [1371507488.715618] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+CGMI<CR>'
modem-manager[9545]: <debug> [1371507488.754363] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>ERROR<CR><LF>'
modem-manager[9545]: <debug> [1371507488.754457] [mm-serial-parsers.c:448] mm_serial_parser_v1_parse(): Got failure code 100: Unknown error
modem-manager[9545]: <debug> [1371507488.754534] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+CGMM<CR>'
modem-manager[9545]: <debug> [1371507488.788378] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>ERROR<CR><LF>'
modem-manager[9545]: <debug> [1371507488.788474] [mm-serial-parsers.c:448] mm_serial_parser_v1_parse(): Got failure code 100: Unknown error
modem-manager[9545]: <debug> [1371507488.788551] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+CGMR<CR>'
modem-manager[9545]: <debug> [1371507488.820391] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>ERROR<CR><LF>'
modem-manager[9545]: <debug> [1371507488.820546] [mm-serial-parsers.c:448] mm_serial_parser_v1_parse(): Got failure code 100: Unknown error
modem-manager[9545]: <debug> [1371507488.820613] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'ATI<CR>'
modem-manager[9545]: <debug> [1371507488.842036] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>ERROR<CR><LF>'
modem-manager[9545]: <debug> [1371507488.842238] [mm-serial-parsers.c:448] mm_serial_parser_v1_parse(): Got failure code 100: Unknown error
modem-manager[9545]: <debug> [1371507488.842358] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'ATI1<CR>'
modem-manager[9545]: <debug> [1371507488.855577] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>ERROR<CR><LF>'
modem-manager[9545]: <debug> [1371507488.855756] [mm-serial-parsers.c:448] mm_serial_parser_v1_parse(): Got failure code 100: Unknown error
modem-manager[9545]: <debug> [1371507488.855874] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): --> 'AT+GSN<CR>'
modem-manager[9545]: <debug> [1371507488.880580] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '<CR><LF>+GSN: ********\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\1
modem-manager[9545]: <debug> [1371507488.881470] [mm-at-serial-port.c:334] debug_log(): (ttyACM0): <-- '\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170\170
modem-manager[9545]: <debug> [1371507489.553365] [mm-serial-port.c:697] data_available(): (ttyACM0) unexpected port hangup!
modem-manager[9545]: <debug> [1371507489.553545] [mm-serial-port.c:908] mm_serial_port_close(): (ttyACM0) device open count is 0 (close)
modem-manager[9545]: <info> [1371507489.553630] [mm-serial-port.c:923] mm_serial_port_close(): (ttyACM0) closing serial port...
modem-manager[9545]: <info> [1371507489.553734] [mm-serial-port.c:944] mm_serial_port_close(): (ttyACM0) serial port closed
modem-manager[9545]: <debug> [1371507489.553964] [mm-modem-helpers.c:1069] mm_create_device_identifier(): Device ID source '000016d800005533S/WVER:CCUTSU02Model:CCx-ExxxUCMOTech,Incorporated'
modem-manager[9545]: <debug> [1371507489.554057] [mm-modem-helpers.c:1070] mm_create_device_identifier(): Device ID '9fb99816aecd9602a0891d710b8ae46135ac949b'
modem-manager[9545]: mm_serial_port_close: assertion `priv->open_count > 0' failed
modem-manager[9545]: <info> [1371507489.554268] [mm-modem-base.c:398] mm_modem_base_set_equipment_identifier(): Modem /org/freedesktop/ModemManager/Modems/0: Equipment identifier set ()
modem-manager[9545]: mm_serial_port_close: assertion `priv->open_count > 0' failed
modem-manager[9545]: <info> [1371507489.557143] [mm-manager.c:928] device_removed(): (tty/ttyACM0): released by modem /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1
modem-manager[9545]: <debug> [1371507489.557312] [mm-modem-base.c:191] mm_modem_base_remove_port(): (ttyACM0) type AT removed from /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1
modem-manager[9545]: <debug> [1371507489.557424] [mm-manager.c:243] remove_modem(): Removed modem /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-1