I confirm the same issue. This issue occurs after a kernel update from 4.15.0 to 5.3.0.51 and keeps up to current kernel 5.3.0.53. reset to Kernel 4.15.0 can solve the problem.
Release: Linux Mint 19.3 Tricia CPU: AMD Ryzen 7 2700X Motherboard: Gigabyte AX370-Gaming K5 GPU: Radeon vega 64 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880041 Title: Failing to shutdown/power off or reboot on AMD Ryzen CPUs on kernel versions 5.3.0-52 and later To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-hwe/+bug/1880041/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
