It's with Ryzen 3500U on Ubuntu 19.10, no fancy configuration.
I'm using Fedora, haven't had any sleep problems. If you're using GNOME or KDE, they are notorious for hijacking ACPI handling. Try "# systemctl suspend" to rule out it being Linux's fault.
Wouldn't it be fun if you were basically saying "AMD support on Linux is great, unless you are using GNOME or KDE"? :D