The brightness changes with the colors displayed à l'écran on my Lenovo Thinkpads with Intel HD Graphics. Light colors make the screen brighter, dark make it darker. Same behavior in Windows 8.1 and 10.
The "adaptive brightness" feature in Windows is disabled.
Brightness changers while "Adaptive Brightness" is désactivé in Windows 8.1/10 avec Intel HD Graphics
Re: Brightness changers while "Adaptive Brightness" is désactivé in Windows 8.1/10 avec Intel HD Graphics
Just found a suggestion that solved my problem [here](http://answers.microsoft.com/en-us/windows/forum/windows_8-desktop/how-do-you-completely-disable-adaptive-brightness/b0161873-4ebb-4070-bdad-fdcc01f17e16?auth=1).
It is the Intel "Display Power Saving Technology" that is to blame.
Disable it like so:
- Launch "Intel HD Graphics Panneau de configuration" by right clicking and selecting "Graphics Properties..." from your Intel HD Graphics tray icon
- Click Power
- Choose "On battery"
- Select "Disable" for Display Power Saving Technology
- Cliquez sur Appliquer
It is the Intel "Display Power Saving Technology" that is to blame.
Disable it like so:
- Launch "Intel HD Graphics Panneau de configuration" by right clicking and selecting "Graphics Properties..." from your Intel HD Graphics tray icon
- Click Power
- Choose "On battery"
- Select "Disable" for Display Power Saving Technology
- Cliquez sur Appliquer