I am struggling with this router keeps disconnecting the network all the time.
I configured a ping reboot which also keeps restarting the router so that tells me it really loses internett to.
The firmware is updated to:
There was a hint about updating the internal modem firmware, but i cant seem to find out how to do it and where to find the newer firmware.
i read in the forums that you can blacklist bands. i havent tried this yet as i do not know how to pinpoint the bad ones.
Some debugging help would be much appreciated
If more information is needed please guide me on or point me to articles on how to provide, as i am new to this product and its software.
So i just switched to 4g only. and it seems its not as unstable now.
how can i check what bands for 5g makes this unstable?
similar problems. sometimes the trb500 internet connection is lost and it is fixed by resetting the modem.
I think it’s not just buggy modem firmware, but faulty Linux kernel drivers as well. I see in dmesg that Qualcomm’s IPA driver is having problems. The log contains many fatal error messages, including netdev coredump/backtrace/show_stack.
[54281.533868] ipa-wan ipa3_wwan_xmit:1349 [rmnet_ipa0] fatal: pipe is not valid
[54287.660508] ipa3_tx_dp: 1 callbacks suppressed
[54287.660514] ipa ipa3_tx_dp:1667 pipe 2 not valid
[54287.663875] ipa3_wwan_xmit: 1 callbacks suppressed
[54287.663878] ipa-wan ipa3_wwan_xmit:1349 [rmnet_ipa0] fatal: pipe is not valid
[54293.790554] ipa3_tx_dp: 1 callbacks suppressed
[54293.790560] ipa ipa3_tx_dp:1667 pipe 2 not valid
[54293.793911] ipa3_wwan_xmit: 1 callbacks suppressed
[54293.793914] ipa-wan ipa3_wwan_xmit:1349 [rmnet_ipa0] fatal: pipe is not valid
[54296.689384] subsys-restart: subsystem_restart_dev(): Restart sequence requested for modem, tako restart_level = RELATED.
[54296.689475] [harden ]: restart modem,subsystem_restart_wq_func
[54296.699967] [harden] : Quectel_ModemFatalErrProcess ,init cnt :1
[54307.026870]  (unwind_backtrace) from  (show_stack+0x10/0x14)
[54307.031740]  (show_stack) from  (__warn+0x94/0xe4)
[54307.039403]  (__warn) from  (warn_slowpath_null+0x20/0x28)
[54307.047088]  (warn_slowpath_null) from  (netdev_run_todo+0x1e8/0x2d8)
[54307.053964]  (netdev_run_todo) from  (ipa3_wwan_remove+0x234/0x87c)
[54307.062880]  (ipa3_wwan_remove) from  (platform_drv_remove+0x24/0x3c)
[54307.070399]  (platform_drv_remove) from  (device_release_driver_internal+0x12c/0x1dc)
[54307.079506]  (device_release_driver_internal) from  (driver_detach+0x44/0x80)
[54307.089235]  (driver_detach) from  (bus_remove_driver+0x60/0xd4)
[54307.098420]  (bus_remove_driver) from  (ipa3_lcl_mdm_ssr_notifier_cb+0x4fc/0x6c8)
[54307.106584]  (ipa3_lcl_mdm_ssr_notifier_cb) from  (notifier_call_chain+0x48/0x84)
[54307.116036]  (notifier_call_chain) from  (__srcu_notifier_call_chain+0x44/0x60)
[54307.125575]  (__srcu_notifier_call_chain) from  (srcu_notifier_call_chain+0x18/0x20)
[54307.134779]  (srcu_notifier_call_chain) from  (notify_each_subsys_device.constprop.10+0x160/0x41c)
[54307.144886]  (notify_each_subsys_device.constprop.10) from  (subsystem_restart_wq_func+0x13c/0x75c)
[54307.155709]  (subsystem_restart_wq_func) from  (process_one_work+0x1c8/0x510)
[54307.166717]  (process_one_work) from  (worker_thread+0x50/0x598)
[54307.180590]  (worker_thread) from  (kthread+0x148/0x150)
[54307.184025]  (kthread) from  (ret_from_fork+0x14/0x2c)
[54307.191884] —[ end trace 950fa494c33906dd ]—
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