

As a workaround, if you have a Steam Controller pressing the Steam button should bring up Steam and pressing it again should switch to Big Picture Mode. That’s at least how it works on my Steam Deck in desktop mode.
If you have an Xbox or PlayStation controller you could try if their corresponding buttons work the same.










You can force steam to start in big picture mode with the
-gamepaduiargument. And you can always switch between desktop and big picture mode, at least when you have a normal window manager running.Booting into big picture mode would entail launching gamescope and launching Steam inside that.