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HoloISO

SteamOS 3 (Holo) archiso configuration.

Yes, Gabe. SteamOS functions well on a toaster.

This project attempts to bring Steam Deck's Holo OS into a generic, installable format and replicate close-to-official SteamOS experience.

Upon booting, you'll be greeted with Steam Deck's OOBE screen, from where you'll connect to your network and login to Steam account, from there, you can exit to SDDM login screen by choosing Switch to desktop in power menu.

Q1:

  • Is this official?
  • The code, and packages are straight from Valve with zero possible edits. And ISO is being built on official Steam Deck recovery image running inside QEMU instance.

Q2:

Working stuff:

  • Boots
  • SteamOS OOBE (SteamDeck UI First Boot Experience)
  • Deck UI (separate session)
  • Deck UI (-gamepadui)
  • TDP/FPS limiting
  • Global FSR
  • Shader Pre-Caching
  • cool-looking neofetch?
  • SteamDeck pacman mirrors

Known issues:

  • KDE defaults desktop theme to light mode for now
  • NVIDIA GPUs are stuck on black screen or Triggering uevents. Solution: Boot with nomodeset=1 and install proprietary drivers https://wiki.archlinux.org/title/NVIDIA. Keep in mind, that Steam Deck session won't work for now, delete /etc/sddm.conf.d/autologin.conf to avoid booting into black screen with infinite crash.
  • Intel GPUs/iGPUs require Gamescope and MESA downgrade in order to boot into Steam Deck session. Refer to https://gist.github.com/drraccoony/8a8d0a9e3dfde9fafd3e374e418d2935 for further guidance.

Installation process:

Prerequistes:

  • 4GB flash drive
  • AMD GPU with Vulkan and VDPAU support
  • UEFI-enabled device
  • Disabled secure boot

Installation:

  • Flash the ISO from releases tab using BalenaEtcher or by typing sudo dd if=SteamOS.iso of=/dev/sd(your flash drive) bs=4M status=progress oflag=sync
  • Boot into ISO
  • Run holoinstall
  • Enter drive node, starting from for ex. sda or nvme0n1 when asked
  • Take your favourite hot beverage, and wait till it installs :)

Screenshots:

image image image image image

Notes:

This configuration includes Valve's pacman.conf repositories, holoinstall script and holoinstall post-installation binaries.

This configuration builds releng-based ISO, which is default Arch Linux redistribution flavor.

Building the ISO:

Make sure you are running this on Steam Deck/winesapOS/pacstrapped SteamOS3. If not, copy airootfs/etc/pacman.d/mirrorlist to your Arch's installation

Make sure you have python and archiso installed

Trigger build by:

git clone https://github.com/bhaiest/holoiso/
sudo mkarchiso -v holoiso

Once it ends, your ISO will be available in out folder