It might be related to Trixie (quick test is checking this on Ubuntu variant). We fix few bugs in user space - some packages were missing due to changes in their relations ... if we are talking about hardware RTC, then it is kernel related. Generic kernels usually have only basic support for most boards we are dealing with, but still, this specific function could work different or not at all. Depending of the version and time of build. Hard to say without investigation. I added battery to my N2+ a while ago and tested RTC functionality. It worked, but its a long time ago since I did that test. I will look into this when possible.

Nothing happens after that. It freezes there. EDIT: Is it related with that problem?

hi, @rollinglabs Have you already had a chance to play with it SBC?

Thank you, I found this information very helpful. I have modified both 10_linux and 30_os-prober in a more fancy way, inspired by AmazingFate's Rockchip Debian live CD. Here are the patches in case anyone is interested... 10_linux.patch 30_os-prober.patch

I don't see that from the picture; That tells that kernel is running, and started with initramfs, but what happens after that? just stall?