Euler

Thanks for your explanation! According to your reply, I have two question: 1. Where is the repository? You note that I can install "vendor" kernel from repository, but actually I have no idea where the repository is. Since Ubuntu/Debian have a archive website for downloading all previous kernel, library and software, I think there must be a website that saves all kernel for download. However, I can only find recent mirrors from https://stpete-mirror.armbian.com/archive/. 2. Does this mean I have to compile the kernel from the vendor's official repository? I have found the kernel repository provided from Rockchip: https://github.com/rockchip-linux/kernel/tree/develop-6.1. Should I download the source code and compile it? About mpp: This part I don't know. MPP stands for "Media Process Platform," which Rockchip specifically designed to drive the internal video encoder and decoder of the chip. It can be used to accelerate the speed of video encoding or decoding. Here is the link to the repository: https://github.com/rockchip-linux/mpp. Looking forward to your reply!

Hello everyone! I'm using rk322x TV box for video decoding through mpp. Mpp requires a system with 6.1 or earlier kernel. When I try to compile Ubuntu 22.04 from this repository https://github.com/armbian/build, the selection for kernel are "current" or "edge". I selected "current", and later I found its kernel is 6.12.21. I have tried to use armbian-config to downgrade the kernel, but the earliest selection is 6.6. Then I tried to downgrade the kernel through apt, but there were no 6.1 edition. Thus, I decided to change the kernel through "Mainline Kernels" and install the 6.1.132 kernel. After the installation finished, I rebooted my system and found that the kernel was still 6.12.21, I have no idea what to do next, so I am here asking for help. Apologize for my poor English, and greatly thanks for your help.