• About & Features
  • Desktop
  • Steam Deck/Home Theater PCs (HTPCs)
    • Alternative Handhelds
  • GNOME
  • Features from Upstream
    • Universal Blue
    • Features from Fedora Linux (Kinoite & Silverblue)
• Why
• Showcase
• Documentation & Newsletters
• Custom Packages
• Verification
• Secure Boot
• Contributor Metrics
• Star History
• Special Thanks
• Build Your Own
• Join The Community

Please see our website for a newcomer-friendly explanation of Bazzite. This readme will cover everything in-depth.

Bazzite is an OCI image that serves as an alternative operating system for the Steam Deck, and a ready-to-game SteamOS-like for desktop computers and living room home theater PCs.

Bazzite is built from ublue-os/main and ublue-os/nvidia using Fedora technology, which means expanded hardware support and built in drivers are included. Additionally, Bazzite adds the following features:

• Uses the fsync kernel to achieve HDR and expanded hardware support, among numerous other included patches.
• HDR available in Game mode.
• NVK available on non-Nvidia builds.
• Full hardware accelerated codec support for H264 decoding.
• Full support for AMD's ROCM OpenCL/HIP run-times.
• xone driver for Xbox controllers.
• Full support for DisplayLink.
• Includes Valve's KDE themes from SteamOS.
• Features optional Valve-inspired GTK3/4 themes matching Vapor and VGUI2 from SteamOS. Install Gradience to make use of them.
• LatencyFleX, vkBasalt, MangoHud, and OBS VkCapture installed and available by default
• Patched Switcheroo-Control fixing default-broken iGPU/dGPU switching.
• Support for Wallpaper Engine. _{^{(Only on KDE)}}
• ROM Properties Page shell extension included.
• Full support for Winesync/Fastsync/NTsync.
• Distrobox preinstalled with automatic updates for created containers.
• Ptyxis Terminal used as the default in all images. This terminal is specifically designed for the container workflow you'll use in Bazzite. KDE Konsole and GNOME Console can be installed as flatpaks if required.
• Automated duperemove service for reducing the disk space used by wine prefix contents.
• Support for HDMI CEC via libCEC.
• Uses Google's BBR TCP congestion control by default.
• Input Remapper preinstalled and enabled. _{^{(Available but default-disabled on the Deck variant, may be enabled with ujust restore-input-remapper)}}
• Bazzite Portal provides an easy way to install numerous applications and tweaks, including installing LACT.
• Waydroid preinstalled for running Android apps. Set it up with this quick guide.
• Manage applications using Flatseal, Warehouse, and Gear Lever.
• OpenRGB i2c-piix4 and i2c-nct6775 drivers for controlling RGB on certain motherboards.
• OpenRazer drivers built in, Select OpenRazer in Bazzite Portal or run ujust install-openrazer in a terminal to begin using it.
• OpenTabletDriver udev rules built in, with the full software suite installable via Bazzite Portal or by running ujust install-opentabletdriver in a terminal.
• Out of the box support for Wooting keyboards.
• Built in support for Southern Islands _{^{(HD 7000)}} and Sea Islands _{^{(HD 8000)}} AMD GPUs under the amdgpu driver.
• XwaylandVideoBridge is available for Discord screensharing on Wayland.
• Webapp Manager is available for creating applications from websites for a variety of browsers, including Firefox.

Common variant available as bazzite, suitable for desktop computers.

• Automatic updates for the OS, Flatpaks, and all Distrobox containers - powered by ublue-update and topgrade.

Rebase from an existing upstream Fedora Atomic to this image if you want Open Source GPU Drivers: (Please note: Mesa's Open Source option for NVIDIA GPUs, NVK is still prone to errors at the time of writing, for any issues relating to NVK please submit a report with Mesa, not Ublue/Bazzite)

rpm-ostree rebase ostree-unverified-registry:ghcr.io/ublue-os/bazzite:stable

or for devices with Nvidia GPUs wanting the NVIDIA Proprietary Drivers:

rpm-ostree rebase ostree-unverified-registry:ghcr.io/ublue-os/bazzite-nvidia:stable

For users with Secure Boot enabled: Follow our secure boot documentation prior to rebasing.

Variant designed for usage as an alternative to SteamOS on the Steam Deck, and for a console-like experience on HTPCs, available as bazzite-deck:

• Directly boots to Game mode matching SteamOS's behavior.
• Automatic duperemove greatly trims the size of compatdata.
• Latest version of Mesa creates smaller shader caches and does not require them to prevent stutter.
• Able to be booted even if the drive is full.
• Support for every language supported by upstream Fedora.
• Uses Wayland on the desktop with support for Steam input.
• Includes HHD for expanded input support on non-Valve handhelds.
• Features ported versions of most SteamOS packages, including drivers, firmware updaters, and fan controllers from the evlaV repository.
• Patched Mesa for proper framerate control from Gamescope.
• Comes with patches from SteamOS BTRFS for full BTRFS support for the SD card by default.
• Ships with a ported copy of SDGyroDSU, enabled by default.
• Option to install Decky Loader, EmuDeck, RetroDECK, and ProtonUp-Qt, among numerous other useful packages on installation.
• Custom update system allows for the OS, Flatpaks, and Distrobox images to be updated directly from the Game mode UI powered by ublue-update and topgrade.
• Built in support for Windows dual-boot thanks to Fedora's installation of GRUB being left intact.
• Update break something? Easily roll back to the previous version of Bazzite thanks to rpm-ostree's rollback functionality. You can even select previous images at boot.
• Steam and Lutris preinstalled on the image as layered packages.
• Discover Overlay for Discord pre-installed and automatically launches in both Game mode and on the Desktop if Discord is installed. View the official documentation here.
• Uses ZRAM_^(4GB) with the ZSTD compression algorithm by default with the option to switch back to a 1GB swap file and set a custom size for it if desired.
• LAVD and BORE CPU Schedulers for smooth and responsive gameplay.
• Kyber I/O scheduler to prevent I/O starvation when installing games or during background duperemove process.
• Applies SteamOS's kernel parameters.
• Color calibrated display profiles for matte and reflective Steam Deck screens included.
• Default-disabled power-user features, including:
  • Service for low-risk undervolting of the Steam Deck as well as AMD Framework Laptops via RyzenAdj and Ryzen SMU, see ryzenadj.service and /etc/default/ryzenadj.
  • Service for limiting the max charge level of the battery, see batterylimit.service and /etc/default/batterylimit. ^{_{(Works even when the device is off)}}
  • Built in support for display overclocking. For example, add GAMESCOPE_OVERRIDE_REFRESH_RATE=40,70 to /etc/environment.
  • 32GB RAM mod your Steam Deck? Enjoy double the maximum VRAM amount, automatically applied. ^{_{(Can you share your soldering skills?)}}
• Steam Deck hardware-specific services can be disabled by running ujust disable-bios-updates and ujust disable-firmware-updates in the terminal. These are automatically disabled on non-Deck hardware, and on Decks with DeckHD displays or 32GB RAM mods.
• More information can be found here on the Bazzite Steam Deck images.

Rebase from an existing upstream Fedora Atomic to this image:

rpm-ostree rebase ostree-unverified-registry:ghcr.io/ublue-os/bazzite-deck:stable

Please refer to our Handheld Wiki for required setting changes and Decky Loader plugins for Steam Gaming Mode on your specific Handheld.

Be sure to also read the hhd documentation, some handhelds require specific setting changes/tweaks to function properly.

We also ship ujust commands to install various CSS Loader themes that can't be found on the CSS Loader store. These will be automatically updated with Bazzite if installed.

# Install Handheld Controller Theme (https://github.com/victor-borges/handheld-controller-glyphs)
ujust install-hhd-controller-glyph-theme

Builds with the GNOME desktop environment are available in both desktop and deck flavors. These builds come with the following additional features:

• Variable refresh rate support and fractional scaling enabled under Wayland.
• Custom menu in the top bar for returning to game mode, launching Steam, and opening a number of useful utilities.
• GSConnect preinstalled and ready to use.
• Hanabi extension included to offer similar features to Wallpaper Engine in KDE.
• Numerous optional extensions pre-installed, including important user experience fixes.
• Automatic updates for the Firefox GNOME theme and Thunderbird GNOME theme. ^{_{(If installed)}}

Rebase from an existing upstream Fedora Atomic to this image:

rpm-ostree rebase ostree-unverified-registry:ghcr.io/ublue-os/bazzite-gnome:stable

To rebase an existing ostree system to a Desktop Environment with the Proprietary NVIDIA Drivers release:

rpm-ostree rebase ostree-unverified-registry:ghcr.io/ublue-os/bazzite-gnome-nvidia:stable

To rebase an existing ostree system to the Steam Deck/HTPC release:

rpm-ostree rebase ostree-unverified-registry:ghcr.io/ublue-os/bazzite-deck-gnome:stable

For users with Secure Boot enabled: Follow our secure boot documentation prior to rebasing.

• Proprietary Nvidia drivers pre-installed. _{^{(Only for Nvidia images)}}
• Flathub is enabled by default.
• ujust commands for convenience.
• Multi-media codecs out of the box.
• Rollback Bazzite from any build within the last 90 days.

• A rock solid and stable base.
• System packages stay relatively up to date.
• Can layer Fedora packages to the image without losing them between updates.
• Security focused with SELinux preinstalled and configured out of the box.
• The ability to rebase to different Fedora Atomic images, if desired, without losing user data.
• Printing support thanks to CUPS being preinstalled.

Bazzite started as a project to resolve some of the issues that plague SteamOS, mainly out of date packages (despite an Arch base) and the lack of a functional package manager.

Despite this project also being image-based, you are able to install any Fedora package straight from the command line. These packages will persist across updates _{^{(So go ahead and install that obscure VPN software you spent an hour trying to get working in SteamOS)}}. Additionally, Bazzite is updated multiple times a week with packages from upstream Fedora, giving you the best possible performance and latest features - all on a stable base.

Bazzite ships with the latest Linux kernel and SELinux enabled by default with full support for secure boot _{^{(Run ujust enroll-secure-boot-key and enter the password universalblue if prompted to enroll our key)}} and disk encryption, making this a sensible solution for general computing. _{^{(Yes, you can print from Bazzite)}}

Read the FAQ for details on what makes Bazzite stand out from other Linux based operating systems.

• Installing and Managing Applications
• Updates, Rollbacks, and Rebasing
• Gaming Guide

View additional documentation surrounding the project.

Check out our newsletters that get published on a regular basis for updates on the project.

Ported SteamOS and ChimeraOS packages, among others used by Bazzite, are built on Copr in bazzite and bazzite-multilib.

Package	Status
ds-inhibit
extest
gamescope
gamescope-session-plus
gamescope-session-steam
gamescope-shaders
galileo-mura
gnome-randr-rust
gnome-shell
gnome-shell-extension-bazzite-menu
gnome-shell-extension-caribou-blocker
gnome-shell-extension-compiz-windows-effect
gnome-shell-extension-hanabi
gnome-shell-extension-hotedge
joystickwake
jupiter-fan-control
jupiter-hw-support-btrfs
jupiter-sd-mounting-btrfs
kf6-kio
mangohud
mesa
pipewire
powerbuttond
python3-hid
ryzenadj
scx-scheds
sdgyrodsu
steamdeck-dsp
steamdeck-gnome-presets
steamdeck-kde-presets
steamdeck-kde-presets-desktop
steam_notif_daemon
ublue-update
udisks2
umu-launcher
upower
vpower
xwiimote-ng

Additionally, the following packages are used from other Copr repos:

Package	Status
discover-overlay
hhd
kernel-fsync
latencyflex-vulkan-layer
nerd-fonts
noise-suppression-for-voice
obs-vkcapture
ptyxis
rom-properties
wallpaper-engine-kde-plugin
webapp-manager

These images are signed with sigstore's cosign. You can verify the signature by downloading the cosign.pub key from this repo and running the following command:

cosign verify --key cosign.pub ghcr.io/ublue-os/bazzite

Secure boot is supported with our custom key. The pub key can be found in the root of this repository here. If you'd like to enroll this key prior to installation or rebase, download the key and run the following:

sudo mokutil --timeout -1
sudo mokutil --import secure_boot.der

For users already on a Universal Blue image, you may instead run ujust enroll-secure-boot-key.

If asked for a password, use universalblue.

Bazzite is a community effort and wouldn't exist without everyone's support. Below are some of the people who've helped us along the way:

• rei.svg - For creating our logo and overall branding.
• SuperRiderTH - For creating our Steam game mode startup video.
• evlaV - For making Valve's code available and for being this person.
• ChimeraOS - For gamescope-session and for valuable support along the way.
• Jovian-NixOS - For supporting us with technical issues and for creating a similar project. Seriously, go check it out. It's our Nix-based cousin.
• sentry - For assistance with needed kernel patches and for creating the kernel-fsync repo we now use.
• nicknamenamenick - For being the MVP nearly single-handedly upkeeping our documentation and support literature, and countless cases of helping users.
• Steam Deck Homebrew - For choosing to support distributions other than SteamOS despite the extra work, and a special thanks to PartyWumpus for getting Decky Loader working with SELinux for us.
• cyrv6737 - For the initial inspiration and the base that became bazzite-arch.

Bazzite is built entirely in GitHub and creating your own custom version of it is as easy as forking this repository, adding a private signing key, and enabling GitHub actions.

Familiarize yourself on keeping secrets in github. You'll need to generate a new keypair with cosign. The public key can be in your public repo _{^{(Your users need it to check the signatures)}}, and you can paste the private key in Settings -> Secrets -> Actions with the name SIGNING_SECRET.

We also ship a config for the popular pull app if you'd like to keep your fork in sync with upstream. Enable this app on your repo to keep track of Bazzite changes while also making your own modifications.

You can find us on the Universal Blue Discord and view the archive of support threads without an account.

Discuss and create user guides over at the Universal Blue Discourse Forums.

Follow Universal Blue on Mastodon.