

I’m curious, did you dig around the BIOS/UEFI to see if there are any ACPI power states that can be disabled?
I had a very similar issue and turning off S3 worked around it. Of course, that meant higher power usage during sleep but it was a compromise over buying new hardware.
I’ll be watching this discussion, as I’m currently using Remmina. It meet the bare minimum of SSH & RDP, but it doesn’t have a clear method to organize connections and instead uses a big list. I also find the interface a tad counterintuitive, so maybe I’m just using it wrong.
It also seems to have a bug where it launches twice whenever I start my computer. So I have to close one.