Sierra Wireless MC7354 doesn't wake up from

[Diego López Montes]

Hi,

 

I’m dealing with a Sierra Wireless MC7354. I’m testing it on coverage limits
(removing antenna) on UTMS. In normal operation, RRC_STATE moves between
CELL_DCH, CELL_FACH and CONNECTING while ModemManager.Modem.state keeps
CONNECTED. Sometimes the modem reach DISCONNECTED state in spite of  the
fact that ModemManager.Modem.state keeps CONNECTED too. In this state, Modem
doesn’t reconnect anymore until I make disable/enable call.

 

ModemManager: 1.5.990

Libqmi: 1.14.0

 

/org/freedesktop/ModemManager1/Modem/2 (device id
'71b5b889cd96eb7ea3b168717ad0a971b168d7d5')

  -------------------------

  Hardware |   manufacturer: 'Sierra Wireless, Incorporated'

           |          model: 'MC7354'

           |       revision: 'SWI9X15C_05.05.16.02 r21040 carmd-fwbuild1
2014/03/17 23:49:48'

           |      supported: 'gsm-umts

           |                  cdma-evdo

           |                  lte

           |                  cdma-evdo, gsm-umts

           |                  gsm-umts, lte

           |                  cdma-evdo, lte

           |                  cdma-evdo, gsm-umts, lte'

           |        current: 'cdma-evdo, gsm-umts, lte'

           |   equipment id: '359225050867845'

  -------------------------

  System   |         device: '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-1'

           |        drivers: 'qmi_wwan, option1'

           |         plugin: 'Sierra'

           |   primary port: 'cdc-wdm0'

           |          ports: 'ttyUSB0 (qcdm), ttyUSB2 (at), cdc-wdm0 (qmi),
wwan0 (net), wwan1 (net), cdc-wdm1 (qmi)'

  -------------------------

  Numbers  |           own : 'unknown'

  -------------------------

  Status   |           lock: 'sim-pin2'

           | unlock retries: 'sim-pin (3), sim-pin2 (3), sim-puk (10),
sim-puk2 (10)'

           |          state: 'connected'

           |    power state: 'on'

           |    access tech: 'umts'

           | signal quality: '4' (recent)

  -------------------------

  Modes    |      supported: 'allowed: 2g, 3g, 4g; preferred: none'

           |        current: 'allowed: 2g, 3g, 4g; preferred: none'

  -------------------------

  Bands    |      supported: 'cdma-bc0-cellular-800, cdma-bc1-pcs-1900,
cdma-bc10-secondary-800, cdma-bc15-aws, dcs, egsm, pcs, g850, u2100, u1900,
u17iv, u850, u900, eutran-ii, eutran-iv, eutran-v, eutran-xiii, eutran-xvii,
eutran-xxv'

           |        current: 'cdma-bc15-aws, dcs, egsm, pcs, g850, u2100,
u1900, u850, u900, eutran-ii, eutran-iv, eutran-v, eutran-xvii'

  -------------------------

  IP       |      supported: 'ipv4, ipv6, ipv4v6'

  -------------------------

  3GPP     |           imei: '359225050867845'

           |  enabled locks: 'none'

           |    operator id: '21407'

           |  operator name: 'unknown'

           |   subscription: 'unknown'

           |   registration: 'home'

  -------------------------

  CDMA     |           meid: '35922505086784'

           |            esn: '805E24AC'

           |            sid: 'unknown'

           |            nid: 'unknown'

           |   registration: CDMA1x 'unknown'

           |                 EV-DO  'unknown'

           |     activation: 'not-activated'

  -------------------------

  SIM      |           path: '/org/freedesktop/ModemManager1/SIM/2'

 

  -------------------------

  Bearers  |          paths: '/org/freedesktop/ModemManager1/Bearer/2'

 

 

AT!GSTATUS?:

 

!GSTATUS: 

Current Time:  2193                         Temperature: 52

Bootup Time:   6                               Mode:        ONLINE         

System mode:   WCDMA              PS state:    Attached     

WCDMA band:    WCDMA 2100 

WCDMA channel: 10838

GMM (PS) state:REGISTERED     NORMAL SERVICE 

MM (CS) state: IDLE                        NORMAL SERVICE 

 

WCDMA L1 state:L1M_PCH_SLEEP           LAC:         13C8 (5064)

RRC state:   DISCONNECTED        Cell ID:     02EEC7E3 (49203171)

RxM RSSI C0:   -99                            RxD RSSI C0: -106

RxM RSSI C1:   -106                          RxD RSSI C1: -106

 

Diego López

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