[07:40] Excuse me, I would like to ask for help. [07:41] The ubuntu-22.04-preinstalled-server-riscv64+unmatched.img started with qemu, the kernel version is Linux 5.15.0-1018-generic. I compiled and installed a new kernel, but the new kernel cannot be started. It seems that u-boot needs to be set up. [07:41] I posted the qemu boot script and boot info here: https://dpaste.com/EKCHULY93