AMD Ryzen gen 3 coming

new gen 3 AMD Ryzen 3000 is coming
https://www.phoronix.com/scan.php?page=article&item=ryzen-3700x-3900x-linux&num=1

need first a better kernel > 5.09 version to work

rather something on the kernel + systemd line

Complicating this issue further is that when trying Linux 5.0/5.1/5.2 kernels on Ubuntu 18.04 LTS, they all booted up fine! Hence it doesn’t appear to simply be a kernel regression but either some kernel+systemd interaction issue happening just on AMD Ryzen 3000 series processors or some awkward thing happening with the X570 chipset. When asking AMD again on the day prior to launch, they were still investigating the issue and apparently unsure of the root cause at this time.

from phoronix

1srt return GCC9 and znver2 series
https://www.phoronix.com/scan.php?page=article&item=amd-znver2-gcc9&num=1