System Information

• Distro: CachyOS (Arch-based)
• Kernel: Linux 6.16.8-s
• Desktop: Wayland
• Steam version: 1757650573
• Controller(s): Sony DualSense (and GameSir G8 tested)
• Connection method: USB / Bluetooth (tested both)

The Issue

Controller is correctly detected by Steam Input (shows up in Steam settings and Big Picture mode), but once I launch a game, the controller stops working.

• Only keyboard and mouse inputs are recognized.
• This happens in multiple games (e.g. Furi, [add more examples if you have]).
• Outside Steam, i tested with ppsspp emulator, the controller works fine.
• I switched from EndeavourOS to CachyOS (both Arch-based) and the issue persists.

What I tried

• Tested on both X11 and Wayland → same result.
• • Tried adding custom udev rules for the controller but it did not help.
• Created custom udev rules for DualSense.
• Reset Steam Input configuration.
• Reinstalled Steam (native package from Arch repo, not Flatpak).

Still, issue persists.

Logs

Relevant logs from ~/.steam/steam/logs/:

• [ ] controller.txt
• [ ] input.txt
• [ ] bootstrap_log.txt

(Attaching those as files.)

Steps to reproduce

1. Connect DualSense controller to Linux PC.
2. Open Steam → controller detected in Steam Input.
3. Launch a supported game.
4. In-game, controller does not send inputs (only KB/M works).

Expected behavior

Controller should function in-game via Steam Input, just like on Steam Deck or Windows.

Actual behavior

Controller is detected but no button inputs work in-game.