Hello,
I’ve connected a Sixfab 4G/LTE Cellular Modem Kit (with Quectel EG25-G) to my Raspberry Pi 5 and have installed Sixfab Core on it too. Every few seconds the USB connection disconnects and reconnects, as shown in this dmesg output:
[ 2077.416052] option 3-1:1.3: device disconnected
[ 2077.417867] cdc_ether 3-1:1.4 enxfe8878af3f29: unregister 'cdc_ether' usb-xhci-hcd.1-1, CDC Ethernet Device
[ 2077.576635] usb 3-1: reset high-speed USB device number 29 using xhci-hcd
[ 2077.737109] option 3-1:1.0: GSM modem (1-port) converter detected
[ 2077.737264] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB0
[ 2077.737329] option 3-1:1.1: GSM modem (1-port) converter detected
[ 2077.737396] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB1
[ 2077.737444] option 3-1:1.2: GSM modem (1-port) converter detected
[ 2077.737505] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB2
[ 2077.737694] option 3-1:1.3: GSM modem (1-port) converter detected
[ 2077.739684] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB3
[ 2077.746462] cdc_ether 3-1:1.4 usb0: register 'cdc_ether' at usb-xhci-hcd.1-1, CDC Ethernet Device, fe:88:78:af:3f:29
[ 2077.749683] cdc_ether 3-1:1.4 enxfe8878af3f29: renamed from usb0
[ 2092.968650] usb 3-1: USB disconnect, device number 29
[ 2092.968891] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[ 2092.968930] option 3-1:1.0: device disconnected
[ 2092.969118] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[ 2092.969148] option 3-1:1.1: device disconnected
[ 2092.969313] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[ 2092.969333] option 3-1:1.2: device disconnected
[ 2092.969480] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
[ 2092.969510] option 3-1:1.3: device disconnected
[ 2092.969677] cdc_ether 3-1:1.4 enxfe8878af3f29: unregister 'cdc_ether' usb-xhci-hcd.1-1, CDC Ethernet Device
[ 2106.749136] usb 3-1: new high-speed USB device number 30 using xhci-hcd
[ 2106.908329] usb 3-1: New USB device found, idVendor=2c7c, idProduct=0125, bcdDevice= 3.18
[ 2106.908336] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 2106.908340] usb 3-1: Product: EG25-G
[ 2106.908343] usb 3-1: Manufacturer: Quectel
[ 2107.050470] option 3-1:1.0: GSM modem (1-port) converter detected
[ 2107.050689] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB0
[ 2107.050814] option 3-1:1.1: GSM modem (1-port) converter detected
[ 2107.050951] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB1
[ 2107.051085] option 3-1:1.2: GSM modem (1-port) converter detected
[ 2107.051290] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB2
[ 2107.051390] option 3-1:1.3: GSM modem (1-port) converter detected
[ 2107.051543] usb 3-1: GSM modem (1-port) converter now attached to ttyUSB3
[ 2107.058613] cdc_ether 3-1:1.4 usb0: register 'cdc_ether' at usb-xhci-hcd.1-1, CDC Ethernet Device, fa:48:b6:c3:01:5f
Is this due to firmware or power supply issues? For reference, The current firmware installed on my Pi for the EG25-G is: EG25GGBR07A08M2G_30.200.30.200. If you also need the Pi firmware, it’s: 6fe0b091 (release). Thank you!