Kernel Panic after rescaling VPS from Intel to AMD using Ubuntu 16

After upgrading my VPS from a shared CPU (intel) to a dedicated CPU (amd), I get a kernel panic on bootup, including if I boot into recovery mode. I have managed to use the rescue console to get to the disk (and I'm currently copying the files off it), but what can I try or investigate to get it working again? I also can't find the kernel panic in any logs from rescue mode (and I don't seem to be able to scroll in the console to be able to see what preceded it). Is there any way to get at those logs?