Heh, I was hoping for the same, but in reality I get sleep issues quite often, subpar battery life, and overall unpolished experience... on AMD with Ubuntu.
Which AMD cpu was this? And what version of Ubuntu were you running?
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