With Version 3.60~68 and also 3.60~69 my external USB-CAN BMS Adapter ( CAN1) which is connected to my Pylontech Master did not work anymore. It seems the adapter is no longer recognized. Even a reboot doesn’t help. I’m now back to version 3.60~59 and the adapter is working again.

Hi, we’ve sent you an email yesterday, can you have a look and reply? It asks if its ok for is to login, to enable remote support, and paste the vrm url. Thanks!

Hello, I didn’t see the email because it was in spam. I just replied, and remote support is now enabled. Thanks for your support !!

Hello, I’m still having the same problem with version 3.60~72, so I’ve gone back to version 3.60~59. Will you be able to resolve this issue in future versions?

Hi, we checked by logging in - and somehow the adapter you’re using doesn’t work with the latest linux kernel / its drivers. So thats out of our hands I’m afraid. I recommend you complain at the supplier. Kernel version we’re using is 6.12.23. Very recent LTS version. We tried a usb can adapter w…

Thank you for the answer. Oh, that doesn’t sound good :frowning: We actually use a widely used adapter from Innomaker: [image] USB2CAN-Cable Datasheet: https://github.com/INNO-MAKER/usb2can Features: The USB to CAN Converter Cable compatible with all series Raspberry Pi/Jetson Nano…

Yes sorry to hear that. I see you made an issue here :+1:: USB2CAN-Cable did not work with Linux Kernel 6.12.23 opened 09:55AM - 10 May 25 UTC (UTC) [image] jupzup …

I did another update yesterday to check a few things, and I noticed that there might be a general problem with the CAN port assignments, as CAN0 (VE CAN) and CAN1 on my external USB-CAN were somehow swapped. Maybe you should take another look at your system. I have a feeling something’s wrong and ma…

Hi again, I can always reproduce the problem now. After the update, my two CAN ports are swapped!! Normally, the VM-3P75C Energy Meter is bound to “VE.Can port” in the settings, and my USB-CAN adapter is bound to “can1.” With the new firmware, however, the Energy Meter no longer works until I chan…

Hi @jupzup thanks for the further details. We checked and indeed its possible that this re-ordering happens. There is no mechanism in place in Venus OS now, to, in a deterministic manner, define what name a usb connected CAN interface gets internally. We’ll look into this - but not before doing th…

I could be wrong, but can’t he use udev symlinks?

USB-CAN Problems with Version 3.60~68 and also 3.7x.xx

Beta testing Venus OS beta testing

mpvader (Matthijs Vader) 10 May 2025 15:11 8

Yes sorry to hear that.

I see you made an issue here :

We have tested this one, which works OK: https://canable.io/.

More information here: RaspberryPi CAN Interfaces · victronenergy/venus Wiki · GitHub

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USB-CAN Problems with Version 3.60~68 and also 3.7x.xx

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