How to Enable Serial Port Access on Steam Deck (OLED Model Fix)

Ran into this issue while filming last night — fixed it this morning! If your Steam Deck OLED isn’t recognizing your serial devices (like /dev/ttyACM0), here’s a super quick fix to get you back on track.

Steps Covered in the Video:
1. Switch to Desktop Mode:
Go to Steam Menu - Power - Switch to Desktop
2. Open Terminal (Konsole):
Use the application launcher or press the Steam button and search for Konsole
3. Add Your User to the ‘uucp’ Group:
Run the following command (replace deck with your actual username if needed):

sudo usermod -a -G uucp deck

4. Restart or Log Out/In:
This is necessary for the permission changes to take effect.

Why This Fix Works:
Access to serial interfaces like /dev/ttyACM0 is restricted for security. By adding your user to the correct group, you gain access without needing sudo every time.

Disclaimer:
This video is for educational purposes only. I am not responsible for any damage or changes made to your Steam Deck by following these steps. Proceed at your own risk.

Hashtags:
#SteamDeck #SteamDeckOLED #LinuxFix #SerialPort #TechFix #SteamDeckTips #LinuxCommands #Konsole #DeckTips #Shorts