The NVIDIA driver's fan control logic wasn't doing it for me — too conservative, too opaque — so I built my own. This is a Linux GUI application for independent NVIDIA GPU fan control without requiring Coolbits. Uses pynvml via a root helper subprocess for direct fan management.

• Dark theme GUI (Catppuccin Mocha)
• Multiple GPU support with independent fan curves
• Auto mode (temperature-based interpolation) and manual mode (fixed speed)
• Passwordless sudo integration
• Persistent configuration in ~/.config/gpu-fancontrol/config.json
• Minimizes to taskbar on startup

• Linux with NVIDIA GPU and drivers
• Python 3.7+
• libnvidia-ml.so.1 (usually bundled with NVIDIA drivers)

1. Install dependencies:

   pip install -r requirements.txt

2. Set up passwordless sudo for the fan helper:

   sudo bash setup_sudoers.sh

   Edit setup_sudoers.sh first to match your Python path if not using the default.

3. Run:

   python3 gpu_fancontrol.py

• gpu_fancontrol.py — Main GUI application (tkinter)
• fan_helper.py — Root helper subprocess; communicates via JSON over stdin/stdout
• setup_sudoers.sh — One-time sudoers configuration

{"cmd": "set",       "gpu": 0, "fan": 0, "speed": 75}
{"cmd": "reset",     "gpu": 0, "fan": 0}
{"cmd": "reset_all"}
{"cmd": "quit"}

Config is auto-saved to ~/.config/gpu-fancontrol/config.json and includes per-GPU fan curves and mode settings.

• setup_sudoers.sh contains a hardcoded Python path (/home/ika/miniconda3/bin/python3) — update it to match your system before running.
• Fan control requires the NVIDIA driver to support manual fan speed override on your GPU model.