These controllers were all working on SteamOS before as far as I know, so I’m interested to see what this changes. My understanding is that previously their controllers just show up as generic xbox controllers, and now they will be properly recognized. We’ll see if this has any other benefits like custom bindings for back buttons and things like that.
maybe it is (don’t have my deck with me to check) but even so, it is not an officially supported tool and I can see from issues on Github that people cannot find their controllers on there. not sure if that’s very old or very new ones.
https://fwupd.org/lvfs/devices/
In the devices list of lvfs/fwupd there’s a bunch of controllers supported. But it seems like it’s mostly their retro controllers. XBox-style controllers like their Ultimate C etc. are not supported.