Hi,
my RUT955 often looses mobile connection as the complete modem seems to fail. Logs show "modem disconnected" and "modem not found" errors as well as many others:
Wed Aug 3 09:33:04 2022 kern.info kernel: [ 4469.979666] option1 ttyUSB0: GSM modem (1-
port) converter now disconnected from ttyUSB0
Wed Aug 3 09:33:04 2022 kern.info kernel: [ 4469.993605] option1 ttyUSB1: GSM modem (1-
port) converter now disconnected from ttyUSB1
Wed Aug 3 09:33:04 2022 daemon.info gsmd[3187]: gsmd[write_to_serial():579]: Write to 1
-1.4 modem /dev/ttyUSB2 serial failed
Wed Aug 3 09:33:04 2022 daemon.info gsmd[3187]: gsmd[dispatch_work():1015]: Problem wit
h writing to serial - modem /dev/ttyUSB2
Wed Aug 3 09:33:04 2022 kern.info kernel: [ 4470.062305] option1 ttyUSB2: GSM modem (1-
port) converter now disconnected from ttyUSB2
Wed Aug 3 09:33:04 2022 kern.info kernel: [ 4470.076289] option1 ttyUSB3: GSM modem (1-
port) converter now disconnected from ttyUSB3
Wed Aug 3 09:33:07 2022 daemon.info gsmd[3187]: gsmd[handle_modem_removed():1904]: Mode
m 1-1.4 with port /dev/ttyUSB2 removed
Wed Aug 3 09:33:07 2022 daemon.info gsmd[3187]: gsmd[handle_modem_removed():1906]: Stop
ping operctl if needed
Wed Aug 3 09:33:07 2022 kern.info kernel: [ 4473.508349] option 1-1.4:1.0: GSM modem (1
-port) converter detected
Wed Aug 3 09:33:07 2022 kern.info kernel: [ 4473.515164] usb 1-1.4: GSM modem (1-port)
converter now attached to ttyUSB0
Wed Aug 3 09:33:07 2022 kern.info kernel: [ 4473.523503] option 1-1.4:1.1: GSM modem (1
-port) converter detected
Wed Aug 3 09:33:07 2022 kern.info kernel: [ 4473.530353] usb 1-1.4: GSM modem (1-port)
converter now attached to ttyUSB1
Wed Aug 3 09:33:07 2022 kern.info kernel: [ 4473.538700] option 1-1.4:1.2: GSM modem (1
-port) converter detected
Wed Aug 3 09:33:07 2022 kern.info kernel: [ 4473.545544] usb 1-1.4: GSM modem (1-port)
converter now attached to ttyUSB3
Wed Aug 3 09:33:07 2022 kern.info kernel: [ 4473.553903] option 1-1.4:1.3: GSM modem (1
-port) converter detected
Wed Aug 3 09:33:07 2022 kern.info kernel: [ 4473.560733] usb 1-1.4: GSM modem (1-port)
converter now attached to ttyUSB4
Wed Aug 3 09:33:09 2022 kern.info kernel: [ 4474.760650] option1 ttyUSB0: GSM modem (1-
port) converter now disconnected from ttyUSB0
Wed Aug 3 09:33:09 2022 kern.info kernel: [ 4474.774699] option1 ttyUSB1: GSM modem (1-
port) converter now disconnected from ttyUSB1
Wed Aug 3 09:33:09 2022 kern.info kernel: [ 4474.788632] option1 ttyUSB3: GSM modem (1-
port) converter now disconnected from ttyUSB3
Wed Aug 3 09:33:09 2022 kern.info kernel: [ 4474.802553] option1 ttyUSB4: GSM modem (1-
port) converter now disconnected from ttyUSB4
Wed Aug 3 09:33:09 2022 daemon.info gsmd[3187]: gsmd[init_new_modem():1679]: Unavailabl
e to open device port /dev/
Wed Aug 3 09:33:09 2022 daemon.info gsmd[3187]: gsmd[handle_modem_added():1872]: Someth
ing went wrong
Wed Aug 3 09:33:11 2022 daemon.info gsmd[3187]: gsmd[handle_modem_removed():1899]: Mode
m 1-1.3 not found
Wed Aug 3 09:33:17 2022 daemon.info gsmd[3187]: gsmd[handle_modem_removed():1899]: Mode
m 1-1.4 not found
Wed Aug 3 09:33:18 2022 daemon.info gsmd[3187]: gsmd[handle_modem_removed():1899]: Mode
m 1-1 not found
I attached a troubleshoot file.
Best
Manuel
