A7672G simcom modem issue

[sateeshmamidala]

Hi Team,

I am currently using the A7672G GSM module and experiencing some issues. When I turn on the GSM module, the power sequence sometimes doesn't change. Additionally, I've observed that the GSM module restarts automatically, even when it's idle. Could someone help me troubleshoot and resolve these issues?

• series : A091B01

I am seeing below messages continuously :

[2024-08-16 20:32:08.550] [ 437.282243] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[2024-08-16 20:32:08.579] [ 437.302814] option 2-1:1.2: device disconnected
[2024-08-16 20:32:08.607] [ 437.325490] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[2024-08-16 20:32:08.638] [ 437.372974] option 2-1:1.4: device disconnected
[2024-08-16 20:32:08.684] [ 437.402870] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[2024-08-16 20:32:08.715] [ 437.450047] option 2-1:1.5: device disconnected
[2024-08-16 20:32:09.580] [ 438.316171] usb 2-1: new high-speed USB device number 6 using ehci-platform
[2024-08-16 20:32:09.835] [ 438.560944] cdc_acm 2-1:1.0: ttyACM0: USB ACM device
[2024-08-16 20:32:10.108] [ 438.843537] usb 2-1: USB disconnect, device number 6
[2024-08-16 20:32:16.037] [ 444.756167] usb 2-1: new high-speed USB device number 7 using ehci-platform
[2024-08-16 20:32:16.243] [ 444.956706] usb 2-1: config 1 has an invalid interface number: 5 but max is 4
[2024-08-16 20:32:16.243] [ 444.962419] usb 2-1: config 1 has no interface number 3
[2024-08-16 20:32:16.331] [ 444.986952] option 2-1:1.2: GSM modem (1-port) converter detected
[2024-08-16 20:32:16.331] [ 445.001506] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
[2024-08-16 20:32:16.331] [ 445.011693] option 2-1:1.4: GSM modem (1-port) converter detected
[2024-08-16 20:32:16.331] [ 445.025934] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1
[2024-08-16 20:32:16.331] [ 445.039492] option 2-1:1.5: GSM modem (1-port) converter detected
[2024-08-16 20:32:16.331] [ 445.050605] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2
[2024-08-16 20:32:16.540] [ 445.276280] usb 2-1: USB disconnect, device number 7
[2024-08-16 20:32:16.571] [ 445.291804] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[2024-08-16 20:32:16.619] [ 445.349303] option 2-1:1.2: device disconnected
[2024-08-16 20:32:16.651] [ 445.387466] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[2024-08-16 20:32:16.715] [ 445.447480] option 2-1:1.4: device disconnected
[2024-08-16 20:32:16.741] [ 445.460269] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[2024-08-16 20:32:16.757] [ 445.491730] option 2-1:1.5: device disconnected
[2024-08-16 20:32:17.588] [ 446.326167] usb 2-1: new high-speed USB device number 8 using ehci-platform
[2024-08-16 20:32:17.845] [ 446.579633] cdc_acm 2-1:1.0: ttyACM0: USB ACM device
[2024-08-16 20:32:18.117] [ 446.854443] usb 2-1: USB disconnect, device number 8
[2024-08-16 20:32:24.047] [ 452.766162] usb 2-1: new high-speed USB device number 9 using ehci-platform
[2024-08-16 20:32:24.253] [ 452.966814] usb 2-1: config 1 has an invalid interface number: 5 but max is 4
[2024-08-16 20:32:24.253] [ 452.972634] usb 2-1: config 1 has no interface number 3
[2024-08-16 20:32:24.342] [ 452.996927] option 2-1:1.2: GSM modem (1-port) converter detected
[2024-08-16 20:32:24.342] [ 453.011573] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
[2024-08-16 20:32:24.342] [ 453.022004] option 2-1:1.4: GSM modem (1-port) converter detected
[2024-08-16 20:32:24.342] [ 453.035936] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1
[2024-08-16 20:32:24.342] [ 453.049559] option 2-1:1.5: GSM modem (1-port) converter detected
[2024-08-16 20:32:24.342] [ 453.060783] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2
[2024-08-16 20:35:26.205] [ 634.927282] usb 2-1: USB disconnect, device number 9
[2024-08-16 20:35:26.236] [ 634.946556] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[2024-08-16 20:35:26.236] [ 634.953326] option 2-1:1.2: device disconnected
[2024-08-16 20:35:26.280] [ 634.996546] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[2024-08-16 20:35:26.312] [ 635.037218] option 2-1:1.4: device disconnected
[2024-08-16 20:35:26.358] [ 635.074265] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[2024-08-16 20:35:26.390] [ 635.117894] option 2-1:1.5: device disconnected
[2024-08-16 20:35:27.263] [ 635.976189] usb 2-1: new high-speed USB device number 10 using ehci-platform
[2024-08-16 20:35:27.483] [ 636.220348] cdc_acm 2-1:1.0: ttyACM0: USB ACM device
[2024-08-16 20:35:27.775] [ 636.505546] usb 2-1: USB disconnect, device number 10
[2024-08-16 20:35:33.719] [ 642.436180] usb 2-1: new high-speed USB device number 11 using ehci-platform
[2024-08-16 20:35:33.924] [ 642.636758] usb 2-1: config 1 has an invalid interface number: 5 but max is 4
[2024-08-16 20:35:33.924] [ 642.642470] usb 2-1: config 1 has no interface number 3
[2024-08-16 20:35:34.016] [ 642.666958] option 2-1:1.2: GSM modem (1-port) converter detected
[2024-08-16 20:35:34.016] [ 642.681625] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
[2024-08-16 20:35:34.016] [ 642.692044] option 2-1:1.4: GSM modem (1-port) converter detected
[2024-08-16 20:35:34.016] [ 642.706040] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1
[2024-08-16 20:35:34.016] [ 642.721362] option 2-1:1.5: GSM modem (1-port) converter detected
[2024-08-16 20:35:34.016] [ 642.732475] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2
[2024-08-16 20:35:34.224] [ 642.949989] usb 2-1: USB disconnect, device number 11
[2024-08-16 20:35:34.240] [ 642.974999] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[2024-08-16 20:35:34.304] [ 643.027939] option 2-1:1.2: device disconnected
[2024-08-16 20:35:34.352] [ 643.067847] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[2024-08-16 20:35:34.372] [ 643.097890] option 2-1:1.4: device disconnected
[2024-08-16 20:35:34.423] [ 643.139123] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[2024-08-16 20:35:34.455] [ 643.175649] option 2-1:1.5: device disconnected
[2024-08-16 20:35:35.281] [ 643.996190] usb 2-1: new high-speed USB device number 12 using ehci-platform
[2024-08-16 20:35:35.506] [ 644.235584] cdc_acm 2-1:1.0: ttyACM0: USB ACM device
[2024-08-16 20:35:35.790] [ 644.528246] usb 2-1: USB disconnect, device number 12
[2024-08-16 20:35:41.709] [ 650.426164] usb 2-1: new high-speed USB device number 13 using ehci-platform
[2024-08-16 20:35:41.915] [ 650.626710] usb 2-1: config 1 has an invalid interface number: 5 but max is 4
[2024-08-16 20:35:41.915] [ 650.632422] usb 2-1: config 1 has no interface number 3
[2024-08-16 20:35:42.006] [ 650.656960] option 2-1:1.2: GSM modem (1-port) converter detected
[2024-08-16 20:35:42.006] [ 650.671544] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
[2024-08-16 20:35:42.006] [ 650.681993] option 2-1:1.4: GSM modem (1-port) converter detected
[2024-08-16 20:35:42.006] [ 650.695997] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1
[2024-08-16 20:35:42.006] [ 650.709790] option 2-1:1.5: GSM modem (1-port) converter detected
[2024-08-16 20:35:42.006] [ 650.721035] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2