Wireless Joint

I have a CBA850 with LP6 modem and I'm using a Visible SIM. I have updated the router firmware to 7.0.50 and the modem firmware for Verizon to 02.30.01.01_VERIZON,002.052_000. For the most part, it works, but frequently, it will reboot and I can't figure out why. The log only shows events starting with the current reboot. I do have a fairly weak signal:

Signal Strength 82
RSSI -84 dBm
SINR 9.2 dB
RSRP -112 dB
RSRQ -10 dB'

Could that be the cause? If not, does anyone have any suggestions for determining the problem?

Many thanks!

Signals are not the best but I have seen worse.

What reboots, the modem or the router?

Do you have the Default Connection State as Always On?

I have seen instances where the modem would no idle and the software would reboot the modem to reactivate the connection.

Thanks for the reply!

It's the router that's rebooting... it drops its connection to the web UI, signal strength lights turn off, main light turns amber, etc. I was actively using/testing the internet connection, so I'd assume that that the modem would not have had a chance to go idle.

I figured out how to enable USB logging, but it didn't reveal anything (that I could see), Here's a sample:

3646 user.info WAN:9aa0bec9.AutoAPNFront: Connected
3646 user.info WAN:9aa0bec9.CPPM: Connecting device
3646 user.info cp_stack_mgr: INFO simctrl.c(2394) modem1: simctrl_data_open()
3646 user.info cp_stack_mgr: INFO simctrl.c(1939) modem1: simctrl_handle_open() attempting connect of active sim
3646 user.info cp_stack_mgr: INFO simctrl_ifc_shim.c( 322) modem1: simctrl_shim_protocol_info_ifc_get_info()
3646 user.info cp_stack_mgr: INFO cp_stack_manager.c( 862) modem1: cp_stack_manager_get_signal_strength() - not configured yet
3646 user.info cp_stack_mgr: INFO cp_stack_manager.c( 827) modem1: cp_stack_manager_update_diagnostics() - not yet configured
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1535) modem1: lte_sierra_data_open_process() step:150, instance: 0
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1535) modem1: lte_sierra_data_open_process() step:151, instance: 0
3646 user.info cp_stack_mgr: INFO gsm.c(1330) modem1: modem_gsm_is_APN_configuration_needed() - APN configuration NOT needed
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1535) modem1: lte_sierra_data_open_process() step:158, instance: 0
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1535) modem1: lte_sierra_data_open_process() step:159, instance: 0
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1814) modem1: lte_sierra_data_open_process() ----- exiting with step=160, resl=1
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1413) modem1: lte_sierra_attach_process() step: 286, status: 0, instance: 0
3646 user.info WAN:9aa0bec9: Connect Event: processing - state: connecting
3646 user.info cp_stack_mgr: WARN wan_manager_linux.c(2147):wan_manager_parse_cb() adding APN1 -> vzwims, IPV4V6
3646 user.info cp_stack_mgr: WARN wan_manager_linux.c(2147):wan_manager_parse_cb() adding APN2 -> vzwadmin, IPV4V6
3646 user.info cp_stack_mgr: WARN wan_manager_linux.c(2147):wan_manager_parse_cb() adding APN3 -> VSBLINTERNET, IPV4V6
3646 user.info cp_stack_mgr: WARN wan_manager_linux.c(2147):wan_manager_parse_cb() adding APN4 -> vzwapp, IPV4V6
3646 user.info cp_stack_mgr: WARN wan_manager_linux.c(2147):wan_manager_parse_cb() adding APN5 -> vzw800, IPV4V6
3646 user.info cp_stack_mgr: WARN wan_manager_linux.c(2147):wan_manager_parse_cb() adding APN6 -> VSBLINTERNET, IPV4V6
3646 user.info WAN:9aa0bec9.CPPM: state=connecting result=processing
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1413) modem1: lte_sierra_attach_process() step: 287, status: 0, instance: 0
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1441) modem1: lte_sierra_attach_process() ok: 1, power: 1
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1413) modem1: lte_sierra_attach_process() step: 291, status: 0, instance: 0
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1535) modem1: lte_sierra_data_open_process() step:160, instance: 0
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1535) modem1: lte_sierra_data_open_process() step:161, instance: 0
3646 user.info cp_stack_mgr: INFO lte_sierra.c(1814) modem1: lte_sierra_data_open_process() ----- exiting with step=162, resl=1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:41, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:42, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:43, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:44, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2807) modem1: modem_common_qmi_data_open_process() ----- exiting with step:45, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:45, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:46, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:47, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:48, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:49, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:50, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2807) modem1: modem_common_qmi_data_open_process() ----- exiting with step:51, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:51, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:52, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2171) modem1: modem_common_qmi_data_open_process() step:53, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(2807) modem1: modem_common_qmi_data_open_process() ----- exiting with step:54, instance: 0, status: 0, resl: 1
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(1341) modem1: modem_common_qmi_data_register_process() step:74, status:0
3646 user.info cp_stack_mgr: INFO modem_common_qmi.c(1341) modem1: modem_common_qmi_data_register_process() step:81, status:0
3647 user.info cp_stack_mgr: INFO modem_common_qmi.c(1341) modem1: modem_common_qmi_data_register_process() step:82, status:0
3647 user.info cp_stack_mgr: INFO modem_common_qmi.c(1726) modem1: modem_common_qmi_data_register_process() - READY: reg:1 and (cs:2 or ps:1) - MCC:311, MNC:480
3647 user.info cp_stack_mgr: INFO cp_stack_manager.c( 862) modem1: cp_stack_manager_get_signal_strength() - not configured yet
3647 user.info cp_stack_mgr: INFO cp_stack_manager.c( 827) modem1: cp_stack_manager_update_diagnostics() - not yet configured
3648 user.info cp_stack_mgr: INFO modem_common_qmi.c(1341) modem1: modem_common_qmi_data_register_process() step:81, status:0
3648 user.info cp_stack_mgr: INFO modem_common_qmi.c(1341) modem1: modem_common_qmi_data_register_process() step:82, status:0
3648 user.info cp_stack_mgr: INFO modem_common_qmi.c(1726) modem1: modem_common_qmi_data_register_process() - READY: reg:1 and (cs:2 or ps:1) - MCC:311, MNC:480
3648 user.info cp_stack_mgr: INFO cp_stack_manager.c( 862) modem1: cp_stack_manager_get_signal_strength() - not configured yet
3648 user.info cp_stack_mgr: INFO cp_stack_manager.c( 827) modem1: cp_stack_manager_update_diagnostics() - not yet configured
3606 syslog.info syslogd started: BusyBox v1.24.1
3606 kern.notice kernel: klogd started: BusyBox v1.24.1 (2019-03-25 16:18:22 UTC)

When you upgraded the router software to 7.0.50, did you check the box to reset the router to default factory settings?

Just to eliminate the software being the issue, I would download a fresh software image and reflash the CBA850 again, and be sure to set the router to factory defaults.

What power adapter are you using?

I've reset to factory settings and re-flashed the firmware a couple of times already. The power supply is something I had not considered (its a cheap 12v 2A - Model LX-1202). A bad one would perfectly explain what I've been experiencing! I've got another one. I'll try it out for a couple of days and see what happens. Many thanks! Merry Christmas!

A faulty power supply as well as one with the improper 2.5mm (as opposed to 2.1mm) barrel tip connector can and will cause issues.