Universal Refresh Rate & Thermal Dimming Fix

A userspace Android module that locks the display to its native peak refresh rate and neutralizes aggressive thermal-triggered brightness/dimming clamps. Root-agnostic implementation compatible with Magisk, KernelSU and APatch.

Architecture

[Android System]
    │
    ├── Display Management
    │   ├── Settings.System (peak_refresh_rate, min_refresh_rate)
    │   ├── DeviceConfig (display_manager namespace)
    │   └── DisplayModeDirector (API 35+)
    │
    └── Thermal Management
        ├── cmd thermal override-status (force NONE status)
        └── DeviceConfig (brightness_throttling_data neutralization)

Features

• Refresh Rate Lock: Forces display to operate at maximum detected refresh rate
• Thermal Dimming Neutralization: Prevents aggressive brightness throttling
• SDK-Aware Logic: Auto-adapts to property namespaces across Android 14-17
• Zero Partition Writes: Pure userspace implementation
• Bootloop Safe: Fully reversible on module removal

Compatibility

Android Version	API Level	Refresh Rate	Thermal Fix
Android 14	API 34	✅	✅
Android 15	API 35	✅	✅
Android 16	API 36	✅	✅
Android 17 Beta	API 37	✅	✅

Root Solutions: Magisk • KernelSU • APatch
Architectures: arm • arm64 • x86 • x86_64
FBE Compatible: Yes

Installation

1. Download the latest module ZIP
2. Install through your root manager:
   • Magisk: → Modules → Install from storage
   • KernelSU: → Modules → Install
   • APatch: → Modules → Install
3. Reboot your device

Manual Build

# Clone repository
git clone https://github.com/cyberrforge/refresh_thermal_lock
cd refresh_thermal_lock

# Package module
zip -r refresh_thermal_lock.zip META-INF/ module.prop service.sh

Technical Details

The module operates through three primary mechanisms:

1. Refresh Rate Lock: Uses settings put system and device_config put display_manager to set peak/min refresh rates
2. Thermal Status Override: Continuously runs cmd thermal override-status 0 to force thermal status to NONE
3. Brightness Throttling Neutralization: Clears thermal brightness throttling data maps via device_config

Debugging

Check module operation:

adb shell cat /data/local/tmp/refresh_thermal_lock.log

Verify refresh rate settings:

adb shell settings get system peak_refresh_rate
adb shell device_config get display_manager peak_refresh_rate

Source Code

Available at: github.com/cyberrforge/refresh_thermal_lock

License

MIT License