• Device: Legion Go S [SteamOS]
• Steam client version: 1760657741
• SteamOS version: 3.7.15
• Opted into Steam client beta?: No
• Opted into SteamOS beta?: No
• Have you checked for updates in Settings > System?: Yes

Steps for reproducing this issue:

1. Have Legion Go S with SteamOS in hand.
2. Install European Truck Simulator 2 or Necesse.
3. Notice that key prompts display "?" instead of actual gamepad buttons.

Using this in konsole "sudo inputplumber device 0 targets set xbox-elite" fixes it, until restarting the device. Please fix this. Thank you