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rrgrant avatar image
rrgrant asked

Cerbo GX communication loss

I’ve recently setup a Cerbo GX to monitor my batteries and solar on my boat while I’m away, but it is suffering with fairly regular communication failures - between one hour and four hours every day or two. There is no regular time or pattern to the failures.

The Cerbo is connected via wifi to a cellular hotspot, and I know the hotspot is active because I have a separate monitoring system watching temperature and wind speeds that is still on line when the Cerbo fails. That would indicate to me that that Cerbo connection to the hotspot is hanging for some reason. There is a good connection between the Cerbo and the hotspot. Everything looks normal before and after the comms failure so I don’t know what is going on.

Any thoughts?

cerbo gx
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matt1309 avatar image matt1309 commented ·

HI @rrgrant


My guess was going to be your routers DHCP renewing internal ip on an interval but you'd have thought that would give a more clear disconnection pattern like a fixed time length. To fully rule it out maybe try setting static ip in router/on cerbo.


I've not read up on it recently but venus os used to use conman for managing connections, may be worth ssh'ing into the cerbo and checking the logs. The logs might give you a clue as to what's causing the disconnection, ie is it a drop in wifi or is it IP related or something else altogether

Just out of curiosity when you say connection drop what do you mean/how do you spot it. Is it disconnecting from VRM or is it remote console that's dropping out? Pretty sure VRM data is stored if connection is dropped then sent when connections restored so guessing you mean remote console disconnecting? That might also be a xvnc/websockets connection issue if not connection related.


but these are just my guesses, hopefully one of them narrows your search down a bit


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digitater avatar image
digitater answered ·

I had similar issues with an off-grid cabin connected to starlink repeatedly dropping off. I went to settings -> VRM online portal > Reboot device when no contact and it fixed it. Also make sure 2 way communication with VRM enabled.

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