The Steam Controller Works "Out Of The Box" On Linux
I had written earlier about Former NVIDIA, Microsoft Developers Doing Lots Of The SteamOS Work. In that earlier article I mentioned I didn't see any Steam Controller Linux driver present in Valve's Debian-based SteamOS. It turns out that the Steam Controller for now will work just fine with the generic USB HID input driver.
What this means for end-users is that there will be working out-of-the-box Linux support as the game controller can "just work" with the generic Human Interface Device (HID) driver support in the Linux kernel.confirmed in our forums that for right now there is no need for a kernel driver specific to their controller.