Tried to use xrdp on couple clients' machines and gave up at the end after 2 months (Ubuntu was used as host and client). Always had problems starting with keyboard layouts, xdisplays, remmina client, and ending with black screens (https://github.com/neutrinolabs/xrdp/issues/1358). Also, it requires a very good connection, if you have sometimes a long ping - your clients would be randomly frozen. The solution only restart sessions on host. Very unstable not only xrdp itself, but xorg, vnc, xdisplays, etc within protocol implementation, at least for Ubuntu.
Even having working it was much slower than on windows stack within same datacenter.
I've recently heard good words about x2go. I didn't know about it earlier. Maybe it could save someone brain cells :)
For myself I decided do not use the RDP protocol on linux clients' machines.
I wish Spice worked better. Right now I'm running my workstation on a server KVM instance. Spice too laggy for me. VNC works great.
Although, I leave a connected tty backgrounded with Spice -- the audio works seamlessly. Small bits of lag, but I use it for spotify in the background.
In my experience, SPICE is awesome on a fast local network. I even run it at 4k with a remote VM. I experience more frame drops than straight up lag - but things like video and audio are surprisingly good.
I've been searching for a good (free) virtual desktop/workstation solution but Proxmox as a host + SPICE so far as the best I have found. I'd love to also find something free that supports virtualized or pass-through GPU. I agree that SPICE is not perfect, but it's the only protocol that feels like I am actually using the remote machine as a local desktop unlike VNC or RDP.
Even having working it was much slower than on windows stack within same datacenter.
I've recently heard good words about x2go. I didn't know about it earlier. Maybe it could save someone brain cells :)
For myself I decided do not use the RDP protocol on linux clients' machines.