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Linux · v1.0.1 · free

Private, light Linux for laptops.

HalcyraOS is built on Ubuntu 26.04 LTS with KDE Plasma 6, its own floating top bar and dock, no Snap and no telemetry. 1.0.1 adds FrameFX in the dock, a Task Manager, a start menu with power options, a Welcome app on first boot and a drive picker for installing apps.

Formerly called AvenorOS.

Download HalcyraOS 1.0.1

halcyraos-1.0.1-x86_64.img.xz · 2.0 GB

Version
1.0.1
Base
Ubuntu 26.04 LTS
Desktop
KDE Plasma 6
Needs
x86_64 UEFI, 4 GB RAM
Price
Free

Desktop

HalcyraOS desktop with the floating top bar and dock
The Halcyra top bar and dock on KDE Plasma 6.

Features

No telemetry

Chromium ships with managed policies that turn its reporting off. NetworkManager's connectivity check is disabled.

Plasma 6, cleaned up

KDE Plasma 6 with Halcyra's own floating top bar and dock.

FrameFX built in

FrameFX Linux Beta11 sits in the dock, ready for upscaling any window.

Wide hardware support

Wi-Fi, Ethernet and Bluetooth for Intel, Realtek, MediaTek, Atheros, Broadcom, Marvell and TI.

Task Manager

Ctrl+Shift+Esc shows CPU and GPU clock speeds, usage and temperatures, with a process list.

Light

No Snap. One Updates screen covers system and app updates, and Settings opens to a simple tiled home.

Install

Fresh install. 1.0.0 was based on Arch, so it can't update to 1.0.1. Installing wipes the disk you pick, so back up first.

1. Download and check

Download the single image file and check its SHA-256:

$ 76f3e9b81be373952df17df7ec10bd1011468b85b70497fd50cc5b8a8b562356

Windows: certutil -hashfile halcyraos-1.0.1-x86_64.img.xz SHA256 · macOS: shasum -a 256 · Linux: sha256sum

2. Write the image

Write the .img.xz to a USB stick of 8 GB or more. This erases the stick. balenaEtcher takes the .img.xz directly. Rufus needs it unpacked with 7-Zip first. On Linux:

$ xz -dc halcyraos-1.0.1-x86_64.img.xz | sudo dd of=/dev/sdX bs=4M status=progress conv=fsync

3. Boot

Pick the stick in your firmware's boot menu. The Welcome app opens on first boot.

Needs a 64-bit x86 PC with UEFI (no legacy BIOS), 4 GB RAM (8 GB recommended), a 20 GB disk and a Vulkan-capable GPU. 1.0.1 hasn't been tested on real hardware yet.

Download · 2.0 GB .sha256 Release notes 1.0.0 (Arch)

Gaming build

1.1.0 gaming test 1 (pre-release). For benchmarking on real hardware, still on the old Arch base. Adds the scx_lavd scheduler, gamemode, zram, Steam with Proton, NVIDIA and Mesa drivers, and MangoHud.

The zip is split into two parts. Download both, then join them:

$ cat avenoros-1.1.0-gaming.1-x86_64.zip.001 avenoros-1.1.0-gaming.1-x86_64.zip.002 > avenoros-1.1.0-gaming.1-x86_64.zip

Windows: copy /b avenoros-1.1.0-gaming.1-x86_64.zip.001 + avenoros-1.1.0-gaming.1-x86_64.zip.002 avenoros-1.1.0-gaming.1-x86_64.zip

Part 1 · 1.57 GB Part 2 · 1.35 GB Release notes