Steam Deck: Neptune

The Steam Deck, released on February 25, 2022, is a handheld gaming computer developed by Valve Corporation.

The Steam Deck OLED, introduced on November 16, 2023, features a brighter and larger OLED display, improved battery life, and enhanced cooling features.

The Built-In Controller is known as: Neptune

Steam Input support

Yes

Linux Kernel Support

Yes, since 4.18 - hid-steam

Udev rules

# Valve USB devices
SUBSYSTEM=="usb", ATTRS{idVendor}=="28de", MODE="0666"

# Steam Controller udev write access
KERNEL=="uinput", SUBSYSTEM=="misc", MODE="0660", GROUP="input", OPTIONS+="static_node=uinput"

# Valve HID devices over USB hidraw
KERNEL=="hidraw*", ATTRS{idVendor}=="28de", MODE="0666"

# Valve HID devices over bluetooth hidraw
KERNEL=="hidraw*", KERNELS=="*28DE:*", MODE="0666"

What are the Official RetroDECK layouts for the Steam Deck?

• RetroDECK: Steam Deck - Neptune SIMPLE
• RetroDECK: Steam Deck - Neptune FULL

Input Map

RetroDECK Hotkeys

Read more here:

RetroDECK: Controller Hotkeys