ASUS X13 Power Management Scripts

Bash scripts for advanced power and performance management on ASUS laptops with hybrid graphics and AMD Ryzen CPUs. These scripts provide easy-to-use interfaces for GPU switching and CPU power profile management.

Features

GPU Switching (switch.sh)

• Integrated Mode: iGPU only for maximum battery life
• Hybrid Mode: Automatic GPU switching for balanced performance
• AsusMuxDgpu Mode: Discrete GPU only for maximum performance
• Real-time GPU mode detection and switching

CPU Power Management (Wcpu.sh)

• 5 Power Profiles: Ultra Eco, Eco, Mid, Standard, Performance
• AMD Ryzen Optimization: Fine-tuned TDP, current, and temperature limits
• RyzenAdj Integration: Advanced AMD processor control
• Visual Profile Display: Easy-to-read status with emojis
• Auto-sudo: Automatically elevates privileges when needed

Power Profiles

Profile	STAPM Limit	Use Case	Battery Life
🔋 Ultra	10W	Web browsing, documents	Maximum
🌱 Eco	25W	Light multitasking	Extended
⚖️ Mid	45W	Daily work, video playback	Balanced
⚙️ Standard	55W	Development, photo editing	Moderate
🚀 Performance	60W	Gaming, rendering, compilation	Minimum

Prerequisites

GPU Switching

• supergfxctl installed (see asus-debian-tools)
• ASUS laptop with hybrid graphics (Integrated + Discrete GPU)

CPU Power Management

• AMD Ryzen processor
• ryzenadj installed

Install RyzenAdj

# Install dependencies
sudo apt install build-essential libpci-dev cmake

# Clone and build ryzenadj
git clone https://github.com/FlyGoat/RyzenAdj.git
cd RyzenAdj
mkdir build && cd build
cmake -DCMAKE_BUILD_TYPE=Release ..
make
sudo make install

# Verify installation
ryzenadj --info

Installation

# Clone the repository
git clone https://github.com/Kyworn/asus-x13-scripts.git
cd asus-x13-scripts

# Make scripts executable
chmod +x switch.sh Wcpu.sh

# Optional: Move to PATH for system-wide access
sudo cp switch.sh /usr/local/bin/gpu-switch
sudo cp Wcpu.sh /usr/local/bin/cpu-profile

Usage

GPU Switching

# Check current GPU mode
./switch.sh

# Switch to Integrated GPU (battery saving)
./switch.sh Integrated

# Switch to Hybrid mode (balanced)
./switch.sh Hybrid

# Switch to Discrete GPU (performance)
./switch.sh AsusMuxDgpu

Example output:

Changement vers le mode Hybrid en cours...
Le mode est maintenant : Hybrid

CPU Power Profiles

# Check current profile
./Wcpu.sh status

# Apply power profiles
./Wcpu.sh ultra      # 10W - Maximum battery
./Wcpu.sh eco        # 25W - Extended battery
./Wcpu.sh mid        # 45W - Balanced
./Wcpu.sh standard   # 55W - Default
./Wcpu.sh perf       # 60W - Maximum performance

Example output:

Profil Actuel : ⚙️ Standard (55W)

Advanced Configuration

Custom CPU Profile

You can modify Wcpu.sh to create custom profiles:

custom)
    echo "Application du profil 'Custom'..."
    sudo ryzenadj \
        --stapm-limit=30000 \      # Long-term power limit (mW)
        --fast-limit=35000 \        # Short-term power limit (mW)
        --slow-limit=32000 \        # Medium-term power limit (mW)
        --tctl-temp=85              # Temperature limit (°C)
    echo "Profil 'Custom' appliqué."
    ;;

Power Limit Explanations

• STAPM Limit: Sustained power limit (long-term average)
• Fast Limit: Peak power limit (short bursts)
• Slow Limit: Medium-term power average
• APU Slow Limit: Integrated graphics power limit
• VRM Current: Voltage regulator current limits
• TCtl Temp: CPU temperature ceiling

Systemd Integration

Create a systemd service to apply profile at boot:

# Create service file
sudo nano /etc/systemd/system/cpu-profile.service

[Unit]
Description=Apply CPU Power Profile
After=multi-user.target

[Service]
Type=oneshot
ExecStart=/usr/local/bin/cpu-profile standard
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target

# Enable and start service
sudo systemctl daemon-reload
sudo systemctl enable cpu-profile.service
sudo systemctl start cpu-profile.service

Use Cases

Maximum Battery Life

./switch.sh Integrated    # Use integrated GPU only
./Wcpu.sh ultra           # 10W TDP limit

Development Work

./switch.sh Hybrid        # Automatic GPU switching
./Wcpu.sh standard        # 55W TDP

Gaming Session

./switch.sh AsusMuxDgpu   # Dedicated GPU
./Wcpu.sh perf            # 60W TDP

Video Playback

./switch.sh Integrated    # iGPU handles video well
./Wcpu.sh eco             # 25W is sufficient

Troubleshooting

GPU switching not working

# Check supergfxctl service
systemctl status supergfxd

# Reinstall supergfxctl
# See: https://github.com/Kyworn/asus-debian-tools

RyzenAdj returns errors

# Check if running as root
sudo ryzenadj --info

# Verify SMU (System Management Unit) access
dmesg | grep -i ryzen

Changes not taking effect

# GPU mode changes require logout/reboot
# CPU profile changes are instant but verify with:
sudo ryzenadj --info | grep STAPM

Compatibility

Tested On

• ASUS ROG Flow X13 (GV301)
• ASUS ROG Zephyrus G14
• ASUS ROG Zephyrus G15

Should Work On

• Any ASUS laptop with supergfxctl support
• Any AMD Ryzen laptop (for CPU power management)

Safety Notes

⚠️ Important:

• Lowering power limits is always safe
• Increasing beyond 60W may cause thermal throttling or reduced lifespan
• Monitor temperatures with sensors or btop
• The CPU will protect itself by throttling if limits are exceeded

Contributing

Contributions welcome! Please:

1. Fork the repository
2. Create a feature branch (git checkout -b feature/improvement)
3. Test thoroughly on your hardware
4. Commit changes (git commit -m 'Add feature')
5. Push to branch (git push origin feature/improvement)
6. Open a Pull Request

Related Projects

• asus-debian-tools - Installation scripts for supergfxctl and asusctl
• RyzenAdj - AMD Ryzen power management tool
• supergfxctl - GPU switching daemon
• ASUS Linux - Community resources

License

MIT License - Feel free to use and modify

Author

Created by Kyworn

Acknowledgments

• FlyGoat for RyzenAdj
• asus-linux.org community
• AMD for detailed Ryzen documentation