Sierra Wireless MC7354 doesn't wake up from

[Aleksander Morgado]

Hoola Diego,


>
> 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
>
>
>

Could you please gather ModemManager debug logs while reproducing this?
See https://www.freedesktop.org/wiki/Software/ModemManager/Debugging/


-- 
Aleksander
https://aleksander.es