Hi Teltonika,
It appears that you can derive if the modem on a RUTX50 is functioning / recoverable / unrecoverable, from the output of the lsusb command.
Could you let me know, the various ‘markers’ you are looking for, in your interpretation for a RUTX50.
I currently have a connection and my current lsusb output reads as …
Bus 003 Device 001: ID 1d6b:0002
Bus 002 Device 004: ID 2c7c:0800
Bus 001 Device 001: ID 1d6b:0002
Bus 004 Device 001: ID 1d6b:0003
Bus 002 Device 001: ID 1d6b:0003
The reason I’m trying to get better diagnostic commands is that yesterday, I had some issues that I addressed through multiple reboots, factory resets and device firmware re-loads. The end result after every step was slightly different in the system log (although I don’t understand what it’s telling me), and after each try, ranged from …
1949 Wed Jan 29 17:19:45 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1950 Wed Jan 29 17:19:45 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1951 Wed Jan 29 17:19:46 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1952 Wed Jan 29 17:19:46 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1953 Wed Jan 29 17:19:47 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1954 Wed Jan 29 17:19:47 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1955 Wed Jan 29 17:19:48 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1956 Wed Jan 29 17:19:48 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1957 Wed Jan 29 17:19:49 2025 kern.notice IPv4 connectivity started to fail
1958 Wed Jan 29 17:19:49 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1959 Wed Jan 29 17:19:49 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1960 Wed Jan 29 17:19:50 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1961 Wed Jan 29 17:19:50 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1962 Wed Jan 29 17:19:51 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1963 Wed Jan 29 17:19:51 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1964 Wed Jan 29 17:19:52 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1965 Wed Jan 29 17:19:52 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1966 Wed Jan 29 17:19:53 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1967 Wed Jan 29 17:19:53 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1968 Wed Jan 29 17:19:54 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1969 Wed Jan 29 17:19:54 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1970 Wed Jan 29 17:19:55 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1971 Wed Jan 29 17:19:55 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1972 Wed Jan 29 17:19:56 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1973 Wed Jan 29 17:19:56 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1974 Wed Jan 29 17:19:57 2025 daemon.err modem_trackd[2961]: [look_modem_ubus_method:280] error: Failed to find gsm.modem0 ubus object restaring modem via GPIO
1975 Wed Jan 29 17:19:57 2025 kern.info kernel: mctl: writting ‘1’ to /sys/class/gpio/modem_power/value
1976 Wed Jan 29 17:19:57 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1977 Wed Jan 29 17:19:57 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1978 Wed Jan 29 17:19:58 2025 kern.info kernel: mctl: writting ‘0’ to /sys/class/gpio/modem_power/value
1979 Wed Jan 29 17:19:58 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1980 Wed Jan 29 17:19:58 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
1981 Wed Jan 29 17:19:59 2025 daemon.info gsmd[2906]: [__write:1300] warning: [CMM] Write to 2-1 [2c7c:0800] modem failed: errno 5
1982 Wed Jan 29 17:19:59 2025 daemon.info gsmd[2906]: [common_write_handle:224] warning: [CMM] Failed to send command (0/8 bytes transferred) to 2-1 [2c7c:0800] modem!
to …
629 Thu Jan 30 06:41:08 2025 kern.info kernel: [ 93.000915] usb 2-1: USB disconnect, device number 2
630 Thu Jan 30 06:41:08 2025 kern.info kernel: [ 93.001311] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
631 Thu Jan 30 06:41:08 2025 kern.info kernel: [ 93.005488] option 2-1:1.0: device disconnected
632 Thu Jan 30 06:41:08 2025 kern.info kernel: [ 93.014502] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
633 Thu Jan 30 06:41:08 2025 kern.info kernel: [ 93.017349] option 2-1:1.1: device disconnected
634 Thu Jan 30 06:41:08 2025 kern.info kernel: [ 93.026901] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
635 Thu Jan 30 06:41:08 2025 kern.info kernel: [ 93.029907] option 2-1:1.2: device disconnected
636 Thu Jan 30 06:41:08 2025 kern.info kernel: [ 93.038770] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
637 Thu Jan 30 06:41:08 2025 kern.info kernel: [ 93.042401] option 2-1:1.3: device disconnected
638 Thu Jan 30 06:41:08 2025 user.warn kernel: [ 93.042955] [01-serial-symlink.sh] New device ttyUSB0 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.0/ttyUSB0/tty/ttyUSB0 appeared!
639 Thu Jan 30 06:41:08 2025 daemon.notice netifd: Network device ‘qmimux0’ link is down
640 Thu Jan 30 06:41:08 2025 daemon.notice netifd: Interface ‘mob1s1a1_4’ has link connectivity loss
641 Thu Jan 30 06:41:08 2025 kern.info kernel: [ 93.214833] qmi_wwan 2-1:1.4 wwan0: unregister ‘qmi_wwan’ usb-xhci-hcd.0.auto-1, WWAN/QMI device
642 Thu Jan 30 06:41:08 2025 user.warn kernel: [ 93.249645] [01-serial-symlink.sh] New device ttyUSB1 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.1/ttyUSB1/tty/ttyUSB1 appeared!
643 Thu Jan 30 06:41:08 2025 daemon.err events_reporting: Failed to send email to “”
644 Thu Jan 30 06:41:08 2025 daemon.notice netifd: Interface ‘mob1s1a1_4’ is disabled
645 Thu Jan 30 06:41:08 2025 user.warn kernel: [ 93.451221] [01-serial-symlink.sh] New device ttyUSB2 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.2/ttyUSB2/tty/ttyUSB2 appeared!
646 Thu Jan 30 06:41:09 2025 user.warn kernel: [ 93.622842] [01-serial-symlink.sh] New device ttyUSB3 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.3/ttyUSB3/tty/ttyUSB3 appeared!
647 Thu Jan 30 06:41:09 2025 daemon.notice netifd: Network device ‘wwan0’ link is down
648 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1_4 (6544): udhcpc: SIOCGIFINDEX: No such device
649 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1_4 (6544): udhcpc: received SIGTERM
650 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1_4 (6544): udhcpc: unicasting a release of 10.188.172.88 to 10.188.172.89
651 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1_4 (6544): udhcpc: sending release
652 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1_4 (6544): udhcpc: can’t bind to interface qmimux0: No such device
653 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1_4 (6544): udhcpc: bindtodevice: No such device
654 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1_4 (6544): udhcpc: entering released state
655 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1_4 (6544): Command failed: Permission denied
656 Thu Jan 30 06:41:09 2025 daemon.notice netifd: Interface ‘mob1s1a1_4’ is now down
657 Thu Jan 30 06:41:09 2025 daemon.warn dnsmasq[2413]: no servers found in /tmp/resolv.conf.d/resolv.conf.auto, will retry
658 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1 (9107): Stopping network mob1s1a1
659 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1 (9107): Command failed: Not found
660 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1 (9107): Command failed: Not found
661 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1 (9107): Stopping network on /dev/cdc-wdm0!
662 Thu Jan 30 06:41:09 2025 user.notice netifd: uqmi -s -d /dev/cdc-wdm0 -t 3000 --set-client-id wds,14 --stop-network 0xFFFFFFFF --autoconnect
663 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1 (9107): Failed to open device, errno: 2
664 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1 (9107): Command failed: Permission denied
665 Thu Jan 30 06:41:09 2025 daemon.notice netifd: Interface ‘mob1s1a1’ is now down
666 Thu Jan 30 06:41:09 2025 daemon.notice netifd: Interface ‘mob1s1a1’ is setting up now
667 Thu Jan 30 06:41:09 2025 user.notice netifd: uqmi -s -d /dev/cdc-wdm0 -t 3000 --set-client-id wds,14 --release-client-id wds
668 Thu Jan 30 06:41:09 2025 daemon.notice netifd: mob1s1a1 (9235): Stopping network mob1s1a1
669 Thu Jan 30 06:41:10 2025 daemon.notice netifd: mob1s1a1 (9235): Command failed: Not found
670 Thu Jan 30 06:41:10 2025 daemon.notice netifd: mob1s1a1 (9235): Command failed: Not found
Many thanks,
Mike