Valve have released SteamOS 3.7.0 Preview, which they noted has the beginnings of support for non-Steam Deck handhelds! So we're closing in on the previously announced Beta for more handhelds. Although this release is still just for Steam Deck.
I think that if you’re looking for a Linux distribution that is as polished as the Steam Deck, then SteamOS on desktop might not be the right play. SteamOS will probably (rightfully) be developed solely for handheld, low-power devices, and won’t work unless you’re using the specific APUs that they’ll include drivers for.
If that sort of streamlined experience interests you, Bazzite has very similar goals to SteamOS (good OOTB gaming experience, safe updates etc.), except that they also target wide hardware compatibility. Other gaming distros exist, but I’m probably just not aware of them.
Check out sunshine/moonlight. It takes some tinkering but it runs better than remote play and can be configured to auto change your resolution on connect and disconnect. There's also a plug-in for decky as well.
Out of interest (I asked someone else the same question) how is the support for Nvidia drivers? Other than my handhelds all my systems are team green and it’s what has always deterred me from switching to Linux on them as from what I gather support is flaky on most distros.
Honest question: what's stopping you currently? For me, I kept Windows around purely for playing certain VR games that didn't run well on Linux.
The last Windows update fucked up my video config, so I reluctantly decided to try SteamVR on Linux again.
I'll admit my hopes weren't particular high given me last shot at it but holy shit pretty much every VR game I tried worked as well as they had in Windows (Angry Birds develop a weird controller jitter after about 30 minutes but I've had that in Windows too).
The only extra steps I had to do to get stuff working was install "SteamVR experimental" and one of the Linux utilities to set my GPU to always run in performance mode when gaming (not necessary for everything but jealous with some).
For non-VR, most AAA titles also work great. The main issue I've seen is certain DRM for non-Steam multiplayer games can be a bit finicky, but that's getting better too and it's been awhile since I've run afoul of those.
Apparently SteamOS doesn't have plans for large scale desktop support. I've been using cachyos for the last 4 months while playing games on my NTFS Windows steam libraries and it has been fine. On Nvidia even.
Hopefully it'll get big enough they peripheral makes will finally make Linux native apps for their stuff. It's one of the biggest hurdles to me moving completely to Linux