ASUS VivoBook 15 X1504 Intel Core i5 1235U Screen Dimming Randomly Fix Windows 11

Disable Adaptive Brightness

Settings → System → Display → Brightness → turn off “Change brightness automatically when lighting changes.”

Disable CABC in Intel Graphics

Right-click desktop → Intel Graphics Command Center → Display → General → turn off “Enable Content Adaptive Brightness Control.”

Disable via Power Options

Power Options → Change plan settings → Change advanced power settings → Display → Enable adaptive brightness → set to Off for both battery and plugged in.

Update Intel Display Driver

Download the Intel UHD Graphics driver from ASUS Support for VivoBook 15 X1504. Newer driver versions have a dedicated CABC toggle in the settings panel.

Why does the screen dim randomly on ASUS VivoBook 15 X1504?

Windows 11 Content Adaptive Brightness Control (CABC) and the adaptive brightness feature in the display driver automatically lower brightness based on content. Disabling these stops random dimming.

How do I disable adaptive brightness on ASUS VivoBook 15 X1504?

Go to Settings → System → Display → Brightness and turn off “Change brightness automatically when lighting changes.” Also disable CABC in the Intel or ASUS display driver settings.

What is Content Adaptive Brightness Control (CABC) on ASUS VivoBook?

CABC is a panel feature that adjusts backlight brightness based on screen content to save battery. It causes the screen to dim on dark images and brighten on light ones, which many users find distracting.

Can a display driver update fix screen dimming on ASUS VivoBook 15 X1504?

Yes. Download the Intel UHD Graphics driver from ASUS Support for VivoBook 15 X1504. Newer driver versions include a panel self-refresh toggle that lets you disable adaptive brightness per-application.