OpenCL Switcher GUI + DaVinci Resolve Fix

Specialized tool for AMD-primary + NVIDIA-secondary hybrid GPU systems

📌 Overview

This script provides a Zenity-based GUI to manage OpenCL configurations on hybrid GPU systems with AMD as the primary GPU and NVIDIA as the secondary GPU. It's ideal for content creators and professionals who need to switch between GPU configurations for different workloads.

🎯 Key Features

• Hybrid GPU Management:
  • Specifically designed for AMD-primary + NVIDIA-secondary setups
  • Switch between NVIDIA-only, AMD-only, or both GPUs
• DaVinci Resolve Fix:
  • Resolves library conflicts in hybrid setups
• Nouveau Control:
  • Blacklist/whitelist open-source NVIDIA driver
• System Monitoring:
  • Integrated nvtop GPU monitoring
  • System info display (lspci + driver versions)
• Configuration Persistence:
  • Remembers last used configuration

⚠️ Important Notes

• Designed specifically for AMD-primary + NVIDIA-secondary configurations
• Not recommended for NVIDIA-primary setups
• Always back up important data before use
• Review code if you have security concerns

📜 License & Legal

• Licensed under GNU GPL v3.0 or later
• Trademarks: NVIDIA, AMD, and DaVinci Resolve are trademarks of their respective owners
• This project is not affiliated with or endorsed by any hardware manufacturer

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🛠️ Dependencies

# Core dependencies
sudo apt install zenity

# Recommended for full functionality
sudo apt install nvtop pciutils kmod policykit-1

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📂 Installation/uninstall script

https://github.com/minto3792/opencl-switcher/blob/37564fceedcfb82483c263a91e887be77edd2536/script/install-uninstall.sh

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🚀 Usage

Run from desktop session:

opencl-switcher

GUI Options:

1. OPENCL_CUDA - NVIDIA only (ideal for Resolve)
2. OPENCL_AMD - AMD only (optimized for gaming)
3. OPENCL_BOTH - Enable both GPUs
4. NOUVEAU_BLACKLIST - Disable Nouveau driver
5. NOUVEAU_WHITELIST - Re-enable Nouveau
6. DAVINCI_FIX - Apply Resolve compatibility fix
7. NVTOP - Launch GPU monitoring tool
8. INFO - Show system GPU/driver info
9. REBOOT - Apply changes
10. EXIT - Close application

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🎬 Recommended Workflows

For Content Creation (DaVinci Resolve)

graph LR
    A[OPENCL_CUDA] --> B[DAVINCI_FIX] --> C[RESTART]

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For Gaming

graph LR
    D[OPENCL_AMD] --> E[Launch Game]

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For Multi-GPU Workloads

graph LR
    F[OPENCL_BOTH] --> G[NVTOP Monitor] --> H[Run Application]

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🧩 Technical Details

Hybrid Configuration Notes:

• AMD GPU connected to primary display output
• NVIDIA GPU used for compute/rendering only
• Script modifies:
  • OpenCL vendor files: /etc/OpenCL/vendors
  • Nouveau config: /etc/modprobe.d/blacklist-nouveau.conf

File Locations:

• Configuration: ~/.config/opencl-switcher.conf
• Log File: /tmp/opencl-switcher-gui.log
• DaVinci Fix: Moves libraries in /opt/resolve/libs to oldlibs/

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⚠️ Known Issues & Fixes

Issue	Solution
Display not working after changes	Use console: sudo opencl-switcher --nouveau-whitelist
Resolve still crashing	Apply both OPENCL_CUDA and DAVINCI_FIX
AMD GPU not detected	Try OPENCL_BOTH mode + install mesa-opencl-icd

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🖼️ Additional Screenshots

Info Window

DaVinci Fix Applied

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🙏 Credits & License

• License: GNU GPL v3.0
• Credits:
  • TechMimic YouTube for DaVinci fix concept
  • Open Source community for continuous improvements
• Disclaimer: Use at your own risk. Not responsible for system damage.

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🤝 Support & Contributions

• Troubleshooting: Check /tmp/opencl-switcher-gui.log
• Issues: GitHub issues with system details
• Contributions: PRs welcome under GPLv3+

Designed specifically for AMD-primary + NVIDIA-secondary hybrid systems