I have the LE910C4-NF in the LTE HAT, connected to a Rasp Pi 4 via USB. The system (Linux-5.10.17-v7l±armv7l-with-debian-10.10) sees it initially on boot, showing:
[ 5.750285] usbserial: USB Serial support registered for GSM modem (1-port)
[ 5.757732] cdc_ether 1-1.1:1.2 wwan0: register ‘cdc_ether’ at usb-0000:01:00.0-1.1, Mobile Broadband Network Device, 46:dc:22:cb:c3:c1
[ 5.758059] usbcore: registered new interface driver cdc_ether
[ 5.763016] option 1-1.1:1.0: GSM modem (1-port) converter detected
[ 5.763799] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB0
[ 5.764388] option 1-1.1:1.4: GSM modem (1-port) converter detected
[ 5.767552] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB1
[ 5.767941] option 1-1.1:1.5: GSM modem (1-port) converter detected
[ 5.768333] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB2
[ 5.768663] option 1-1.1:1.6: GSM modem (1-port) converter detected
[ 5.769002] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB3
[ 5.769334] option 1-1.1:1.7: GSM modem (1-port) converter detected
[ 5.769725] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB4
But a short bit later, this happens:
[ 88.804580] usb 1-1.1: USB disconnect, device number 4
[ 88.805496] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[ 88.805639] option 1-1.1:1.0: device disconnected
[ 88.806604] cdc_ether 1-1.1:1.2 wwan0: unregister ‘cdc_ether’ usb-0000:01:00.0-1.1, Mobile Broadband Network Device
[ 88.947102] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[ 88.947168] option 1-1.1:1.4: device disconnected
[ 88.947712] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[ 88.947784] option 1-1.1:1.5: device disconnected
[ 88.948227] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
[ 88.948290] option 1-1.1:1.6: device disconnected
[ 88.948748] option1 ttyUSB4: GSM modem (1-port) converter now disconnected from ttyUSB4
[ 88.948809] option 1-1.1:1.7: device disconnected
[ 89.246132] usb 1-1.1: new high-speed USB device number 7 using xhci_hcd
[ 89.346350] usb 1-1.1: device descriptor read/64, error -71
[ 89.566356] usb 1-1.1: device descriptor read/64, error -71
[ 89.686941] usb 1-1.4-port3: cannot reset (err = -71)
[ 89.687198] usb 1-1.4-port3: cannot reset (err = -71)
I recently upgraded the firmware on Sixfab’s recommendation, to M0F.260009-B001. I changed out multiple USB cables to validate connectivity, and double-checked the antenna each time.
lsusb currently shows:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
The Telit ID info is : 1bc7 - 1206
The monitor.yaml shows:
active_interface: eth0
active_lte_tech: null
cellular_connection: false
cellular_latency: null
fixed_incident: 0
ifs_status:
eth0:
- true
- 27
wlan0: - false
- 0
roaming_operator: null
selected_apn: super
signal_quality: 99
usable_interfaces: - eth0
- wlan0
cm-log shows:
2021-07-29 16:09:55,909 → run.py DEBUG Monitor is working…
2021-07-29 16:09:56,197 → monitor.py ERROR monitor() @modem → Error occured on “AT+CSQ” command!
2021-07-29 16:09:56,218 → monitor.py DEBUG Monitoring data updated with changes.
2021-07-29 16:09:56,219 → modem.py INFO USB interface is reset…
2021-07-29 16:09:56,220 → cm.py ERROR reset_usb_interface() → ('Message: ', “‘NoneType’ object has no attribute ‘reset’”)
2021-07-29 16:09:58,221 → modem.py INFO Modem is resetting softly…
2021-07-29 16:09:58,500 → cm.py ERROR reset_modem_softly() → Reboot command couldn’t be reach to the modem!
2021-07-29 16:10:00,501 → modem.py INFO Modem is resetting softly…
2021-07-29 16:10:00,770 → cm.py ERROR reset_modem_softly() → Reboot command couldn’t be reach to the modem!
2021-07-29 16:10:02,771 → modem.py INFO Modem is resetting via hardware…
HELP!