Cerbo losing connection to LTE modem

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greg-johnson asked Dec 30, '20

Cerbo losing connection to LTE modem

I've got a cerbo (with 2.60 f/w) and the newer LTE modem but the cerbo seems to lose the connectivity with the modem itself every day or so. When I look at the console, the message in the GSM page is "No GSM modem connected".

A reboot of the cerbo always restores the connection, so this isn't an electrical issue (USB plug being disconnected etc).

There doesn't appear to be any firmware update available/necessary for the modem.

Is it possible (I have root access enabled on the cerbo) to look at more detailed logs to help determine what the problem is?

Is this a known bug in 2.60?

Thanks for any advice.

cerbo gx 4g

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Justin Cook ♦♦ commented · Dec 30, 2020 at 07:07 PM

Are you referring to the new Victron GX 4G LTE modem, or are you using a 3rd-party modem?

Assuming the former, have you ensured that the modem's USB is connected to one of the two outer USB ports of the Cerbo (not the port closest to the HDMI connector)?

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brainodo commented · Jan 20, 2021 at 01:15 PM

I am in the US and having the same issue with cerbo 2.60 and new Victron GX LTE. I may schedule a reboot every couple of days for now. Hopefully when the next Release will fix the issue.

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Answer 1 · 2020-12-30T20:12:56Z

bathnm answered · Dec 30, 2020 at 08:12 PM

I am EU based and had some issues with 2.60 and the new LTE/4G modem. My issue was fixed in 2.61~2 beta, which will be released at some stage. It was related to multiple PDP contexts and teh releases notes can be found here

I am not sure if it is related to your problem or not. I would raise this with the supplier so they can feed back through formal channels to Victron who are better placed to confirm.

Off course if you are happy running Beta code, you could always download it onto your device and test for yourself. We are up to beta release 7

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