I suspect that's an Nvidia problem. Never been an issue for me using AMD.

I've had wake-from-suspend issues on plenty of non-nvidia machines, and I have had nvidia machines that have no issues.

I think it has nothing to do with the GPU and everything to do with the motherboard chipset.

Agreed. AMD just works for me on linux. My problem is that I am addicted to 6+ monitors and top end gpus... nvidia just seems to hate linux for top end setups. Which is sad, windows just handles my dumb 5060+5090 setup easily. Gaming on linux has gotten way better, but I still can't gigure out how to get some games working. So I'm stuck between using linux + sway / i3 which I looooove... and not being able to get the value out of my $6k gaming rig. Sadly this is a tale that's been going on for 20 years for me.

It’s the only issue I have on my CachyOS install on an AMD 5900X+9070XT without additional peripherals. It seems like when I hit sleep it doesn’t manage to fully enter sleep (illustrated by the power lights) and then never wakes up anymore until a hard power reset.