How can I change the gamma(not brightness)with hotkeys - posted in Ask for Help: What I need is the ablity to change the gamma with hotkeys but: I create a script that changes the gama by starting the nVidia Control Panel as a hidden window and then change the gamma by using PostMessage and ControlSend to the Gamma slider.Having recently installed Pop!_OS (an Ubuntu derivative) in a dual boot setup for my laptop, I've found that it has been a nearly painless experience, especially since the proprietary NVIDIA drivers come pre-installed. However, one of the issues that I've found in my installation is the lack of brightness control via keyboard.My problem with the digital vibrance and weird brightness resetting issues was solved by changing from "Use default color setttings" in the change resolution tab to Use NVIDIA Color settings. Seems it reverted to default settings when updating to the Windows 10 Fall Creators Update because I have had the same issue before.Apr 20, 2017 · please help me fix Brightness Control Nvidia Graphics Only Laptop ... The main function of the display thermal device is to allow control of the display brightness in ... You can adjust the brightness on your computer through the Settings Charm in Windows 8. Use the following steps to adjust your computer’s brightness in Windows 8: Press the Windows key + C, or swipe in from the right edge of the screen to open your Charms.