Control your Razer Blade without Windows.
VFang is a free, open-source Linux app for performance modes, fan curves, battery charging, keyboard lighting, GPU switching, displays, and live temperatures.
VFang preserves the fang and fangd commands and packages, plus the existing
service, group, socket, and configuration identifiers for compatibility.
Open Terminal, paste this one line, and press Enter:
curl -fsSL https://github.com/bladeandsoulx/vfang-razer-linux/releases/latest/download/install.sh | bashThat is it. When installation finishes, open VFang from your app menu.
Run the command as your normal user—do not add sudo. Enter your password only
when the installer asks. If it says group access was added, log out and back in
once, then open VFang.
The installer chooses the correct packages for your Linux system, checks them, installs the app and background service together, upgrades an existing VFang installation safely, and refuses downgrades.
| Custom fan curves with thermal protection | Performance modes and power automation |
|---|---|
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| Keyboard, logo, and display lighting | GPU mode and refresh-rate controls |
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These screenshots use VFang's built-in hardware simulator. The real app has the same interface.
- 🎛️ Performance modes: Silent, Balanced, Gaming, and Custom CPU/GPU power.
- 🌀 Fan control: Automatic, fixed RPM, or your own fan curve.
- 🔌 Power automation: Change performance and fan settings when you plug in or unplug the charger.
- 🔋 Battery care: Limit charging to 50–80% on supported models.
- 🌈 Lighting: Control keyboard brightness/effects and the lid logo.
- 🎮 GPU mode: Switch between integrated, hybrid, and dedicated graphics.
- 🖥️ Displays: Change refresh rate, brightness, and supported external monitor color settings.
- 📊 Live dashboard: See temperatures, power use, fan speed, and a 90-second history.
- 🔁 Tray and autostart: Quickly switch modes and restore settings after reboot or sleep.
VFang focuses on Razer Blade laptops. It does not currently remap mice/keyboards or create macros, so it is not a complete Razer Synapse replacement for every Razer device.
VFang recognizes 48 Razer Blade models from 2015–2025. Each known model has its own safe fan limits and feature list.
Tested x86_64 Linux bases:
- Ubuntu 22.04, 24.04, and 26.04
- Debian 12 and 13
- Fedora 43 and 44
Linux Mint, Zorin OS, Pop!_OS, and other derivatives are accepted when they report one of those supported Ubuntu, Debian, or Fedora bases. The installer warns that derivatives are not tested directly. Other CPU architectures and unsupported base releases are rejected before anything is installed.
Unknown Razer product IDs are monitor-only by default. Check the full model list or follow the hardware testing guide when adding a model.
VFang controls the laptop's embedded controller directly, but hardware-changing features have guardrails:
- Fan speeds and curves are kept inside the limits for your model.
- A guard that cannot be disabled forces maximum fans at CPU 95 °C or GPU 87 °C. Missing or stale CPU temperature data also forces maximum fans.
- Stopping the background service restores the laptop's automatic fan control.
- App/daemon version mismatches allow status viewing but block hardware changes.
- Custom CPU Boost means more heat and fan noise.
The laptop's own thermal protections continue to work as an additional safety layer.
Check the installer before running it
curl -fLO https://github.com/bladeandsoulx/vfang-razer-linux/releases/latest/download/install.sh
less install.sh
bash install.shThis lets you read the script before it asks for administrator access.
For an extra integrity check, download the installer and checksum manifest from the pinned v0.9.7 release:
curl -fLO 'https://github.com/bladeandsoulx/vfang-razer-linux/releases/download/v0.9.7/{install.sh,SHA256SUMS}'
grep ' install.sh$' SHA256SUMS > install.sh.sha256
sha256sum --check install.sh.sha256Install release packages manually
Download both packages from the same release, then install them together:
# Ubuntu or Debian
sudo apt install ./fangd_0.9.7-1_amd64.deb ./Fang_0.9.7_amd64.deb
# Fedora 43 or 44
sudo dnf install ./fangd-0.9.7-1.x86_64.rpm ./fang-0.9.7-1.x86_64.rpmEnable the background service and give your user access:
sudo systemctl enable --now fangd
sudo usermod -aG fang "$USER"Log out and back in once after adding the group. To remove VFang, run
sudo apt remove fang fangd or sudo dnf remove fang fangd.
Build from source on Ubuntu or Debian
git clone https://github.com/bladeandsoulx/vfang-razer-linux
cd vfang-razer-linux
sudo ./packaging/install-from-source.shThe script installs the build tools, builds and installs VFang, starts its background service, and gives your user access.
You can develop VFang on any OS without Razer hardware.
# Terminal 1: run the daemon with simulated hardware
cargo run -p fangd -- --mock --tcp 127.0.0.1:7331
# Terminal 2: run the desktop app
cd app
npm install
npm run tauri devFor the browser-only UI simulator:
cd app
npm run devRun the Rust tests with cargo test --workspace. See
app/scripts/version.mjs for release version
management.
Real hardware control uses the protected /run/fangd.sock Unix socket. TCP is
available only with simulated hardware on a numeric loopback address.
VFang's in-app Support screen lists the creator's BTC, USDT, and Solana donation addresses. USDT supports BNB Smart Chain (BEP20) and Ethereum (ERC20).
VFang is licensed under GPL-2.0.
Much of its hardware knowledge—EC packets, the 48-model device table, battery limiting, and lighting commands—comes from Razer-Control by Rintastic247 (GPL-2.0), the maintained continuation of razer-laptop-control-no-dkms. VFang also uses information from OpenRazer. If VFang helps you, please consider supporting the Razer-Control author.
Assisted-by: OpenAI GPT-5.6 via Codex and Claude Fable 5 via CLI.
VFang is not affiliated with or endorsed by Razer Inc. “Razer” and “Synapse” are trademarks of Razer Inc.