Forum Discussion
Cannot Adjust External Monitor Brightness in Windows 11 Without Third-Party Software
I am unable to control my external monitor’s brightness through Windows 11 settings, but third-party software like Twinkle Tray works fine. I want to understand why Windows doesn’t provide this feature and if there is a way to enable it without using third-party apps.
System Specifications:
OS: Windows 11 (latest updates installed)
CPU: AMD Ryzen 9 9900X
GPU: NVIDIA GeForce RTX 4060 Ti (latest drivers installed)
Monitor: LG 34GP63A
Connection Type: DisplayPort 1.4 (tried HDMI, same issue)
Issue Details:
The Windows brightness slider is missing for my external monitor.
Brightness adjustment works with Twinkle Tray, meaning my monitor might support DDC/CI.
No brightness control option in NVIDIA Control Panel, only gamma and contrast.
Monitor OSD settings don’t show any clear option for DDC/CI (only OSD Lock On/Off).
What I’ve Tried:
Checked Windows Display settings (no brightness slider).
Enabled OSD settings, but no DDC/CI option found.
Updated NVIDIA drivers and Windows.
Switched to DisplayPort, but the issue remains.
Tried adjusting brightness in NVIDIA Control Panel (only gamma available).
Questions:
Does Windows 11 natively support brightness control for external monitors?
Why does third-party software work but not Windows?
Is there a way to enable DDC/CI in Windows without external apps?
Could this be a driver or hardware limitation?
I’d appreciate any insights or possible solutions! Thanks in advance.
1. Check monitor settings: Adjust the brightness using the physical buttons or menus on the monitor.
Make sure the monitor supports adjusting the brightness via software (usually requires support for the DDC/CI protocol).
2. Update the graphics card driver: Open the Device Manager.
Expand “Display Adapters”, right-click on the graphics card and select “Update Driver”.
Select “Automatically search for updated driver software.
3. Check Windows Settings: Open Settings > System > Display.
Check if there is a brightness adjustment option. If not, try using a shortcut key (e.g. Fn + Brightness key).
4. Use third-party software: Download and install software that supports external monitor brightness adjustment (ClickMonitorDDC, Twinkle Tray, etc.). Adjust the brightness of the external monitor through the software.
5. Contact Microsoft Support: If none of the above methods work, it is recommended to contact Microsoft Support team with detailed error messages and screenshots for further assistance.You clearly didn't read name of ticket.
"Cannot Adjust External Monitor Brightness in Windows 11 Without Third-Party Software".
The question address lack of support DDC/CI in Windows 11.This slider works only for notebook internal monitor, but not for external monitors. And it cannot be extended by any 3rd party sw.
