DisplayLink on Steam deck.md

DisplayLink on Linux Neptune Setup on SteamOS

# Disable SteamOS read-only mode
# I hope you know what you are doing
sudo steamos-readonly disable


# Initialize and populate pacman keys
sudo pacman-key --init
sudo pacman-key --populate archlinux
sudo pacman-key --populate holo

# Install Linux Neptune kernel
sudo pacman -S plymouth

# find the latest version
pacman -Ss linux-neptune | awk '{print $1}' | grep linux-neptune
sudo pacman -S linux-neptune-611 linux-neptune-611-headers

# Install required packages
sudo pacman -S python python3
sudo pacman -S linux-api-headers glibc pybind11
sudo pacman -S base-devel dkms libdrm

#  Install EVDI
## Start clean if needed
sudo rm -r evdi
git clone https://aur.archlinux.org/evdi.git
cd evdi
makepkg -si
cd ~

# Install DisplayLink
## Start clean if needed
sudo rm -r displaylink
sudo rm -r /opt/displaylink
git clone https://aur.archlinux.org/displaylink.git
cd displaylink
makepkg -si


# Enable service
sudo systemctl enable displaylink.service --now


# Debugging: 
sudo dkms status
sudo modprobe evdi
sudo systemctl status displaylink.service
sudo lsmod | grep evdi
sudo xrandr --listproviders

# WIP all in one:
curl -fsSL https://shorturl.at/1MEIl | bash

Based on this reddit comment with some help from chatgpt
https://www.reddit.com/r/steamdeck_linux/comments/u2jb9m/comment/mopur3p

Have you been able to test the all-in-one to work?

After the last steamOS update it didn't work

Here is the all in one

https://gist.github.com/cretudorin/23ae354f41cc89f641d674b9948d66c5

THX @cretudorin worked great! <3

It (being the all-in-one)... really "just worked"! Thank you so much!

Tested 2026-06-27. System details below; tested on Steam Deck LCD running stock SteamOS:

Operating System: SteamOS 3.8.11 Build: 20260620.1
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
Kernel Version: 6.16.12-valve24-2.1-neptune-616-gc748040e4712 (64-bit)
Graphics Platform: Wayland
Partition: A
Processors: 8 × AMD Custom APU 0405
Memory: 17 GB of RAM (15.5 GB usable)
Graphics Processor 1: AMD Custom GPU 0405
Graphics Processor 2: AMD Custom GPU 0405
Manufacturer: Valve
Product Name: Jupiter
System Version: 1

Created a git repo for it

https://github.com/cretudorin/SteamdeckDisplayLink