Omarchy STEAM DECK MODE

[28allday]

So this has taken a while to put together, and thanks to the support on my channel — it’s funded development enough to pay for the gaming laptop I had to buy to test this. Amazing people

I’ll be putting this up on Git later in the week and removing my old WOPR repo, which was the prototype for this.

video here https://youtu.be/x4Amx2xlyUw

Ok what is it

This script is an interactive “Gaming Mode” installer and configurator for Omarchyt. It sets your system up to run a Steam Deck–style Gamescope session (using ChimeraOS gamescope-session packages) and makes it easy to switch between your normal Hyprland desktop and a full-screen Steam/Gamescope gaming session.

its bound to SUPER SHIFT S ...launch and SUPER SHIFT R shut down

on install it does the follwing

Checks your hardware and setup (Arch tools, Hyprland config, GPU type, connected displays) and refuses to run on Intel-only graphics......( as thats a world of hurt with gamescope and Mesa..maybe one day )

Installs the gaming stack: Steam + required 32-bit/64-bit libraries (multilib), Vulkan/Mesa or NVIDIA bits, plus common extras like Mangohud/Gamemode, and AUR packages if needed.

Fixes config for NVIDIA, especially nvidia-drm.modeset=1, and drops the right environment variables for Gamescope on NVIDIA.

Applies performance tuning so gaming doesn’t keep prompting for sudo: udev rules/sudoers, optional Gamescope capability, sysctl tweaks, audio latency tweaks, and shader-cache sizing.

Creates the Gamescope session config (resolution/refresh/output connector, HDR/VRR options where relevant) and the helper wrappers to start/stop things cleanly.

Adds quality-of-life helpers like NetworkManager handling during the session and auto-mounting drives that contain Steam libraries.

Ok and why built it ......I use omarchy as my daily driver moving over from mac for editing and post work so i thought it would be great to finally have just one machine for work and play ......which with this i now have

the link to the script is in the video descritption there are also some plugin for it i will roll out later

decky loader/Ge Force now

and i,m working on OBS capture in gamescope at the mo

so yeah Git later in the week

any way enjoy see you top side

[darkstarlabs-3D]

Love this thanks for all your work. Will there be more on the nvidia limitation? Really need it above that resolution!

[28allday]

Thats up to Nvidia really I believe the issue is on there side ...its not really a Valve or steam issue or concern as Deck mode is for steam deck which is AMD ...so who knows it if it will get sorted out

[darkstarlabs-3D]

interesting thanks for the insight, when implementing my own attempts at gamescope raw 4k and ultrawide resolutions were working ok but im assuming that deck mode is a different implimentation?

[28allday]

Yeah every thing is fine ...well apart from the input issues with a gamescope session being launched as a nested wayland compositor , I did this to start with and you end up with mouse clamping issue on certain games when you launch .

so with this it a clean games scope session ..basically Desktop mode which give to access to all the controls you have on a steam deck EG gpu TDp etc

[filip-spaldon]

Hi, thanks for the awesome installation script! I've been testing it out, but I've encountered a few bugs:

Refresh Rate: I am unable to switch my monitor's refresh rate from 60Hz to 170Hz.

Dual Monitor / Gamescope: I use two monitors. I selected my preferred monitor for Gamescope during the installation, but the configuration isn't applying. This causes the Steam session to fail at launch. As a workaround, it works fine if I only connect a single monitor.

Virtual Keyboard in CS2: I play with a mouse and keyboard, but the virtual keyboard constantly appears during interactions in CS2.

Any advice or workarounds for these issues would be greatly appreciated. Thank you!

FYI. I'm on Framework Desktop with AMD AI MAX 385, with Gigabyte m27q and LG Dual up monitors.