If the lighting in the area is more than 400 lux- a unit in which light is measured in a given space-and the system is on AC power, the brightness is automatically set to 100%. This is all controlled by a deamon called “powerd”-the Chrome OS Power Manager. After that, it checks a few more variables-like general lighting and whether the system is on AC power or battery-then sets the brightness to specific parameters based on what it finds. At boot, the system automatically sets the display brightness to 40%, then adjusts accordingly as the system starts. The phone uses your preferred brightness as a baseline, then adjusts up or down accordingly as the environment changes.Ĭhromebooks don’t really work like that, because the way they judge brightness isn’t nearly as granular.īy that, we really mean Chromebooks only use a few discrete settings. Most modern smartphones allow you manually adjust the display brightness and use the ambient sensor at the same time. How Ambient Light Sensors Work on ChromebooksĬhromebooks are a little bit different from your smartphone. The opposite happens in sunlight or a bright room. For example, in a dark room, the display dim to be easier on your eyes and the keyboard brightens so you can see it better. That sensor monitors the ambient light wherever you are, then adjusts the display brightness and keyboard backlight accordingly. The same rule applies to Chromebooks (or other laptops that have this feature). But if you’re rocking a modern, premium smartphone, the sensor should be pretty easy to spot. It’s worth keeping in mind that not all phones have these-especially if they fall into the “affordable” price spectrum. If you look closely on the top bezel of your phone, for example, you’ll like see a few little void areas-one of these is likely the ambient light sensor. If you don't see it, then your computer doesn’t have access to this feature.The light senors usually hang out somewhere at the top of the device (regardless of whether it’s a tablet, phone, or laptop)-typically near the camera. If you are able to see “Change brightness automatically when lighting changes”, then your computer has the sensor that can detect ambient lighting. To get access to this feature, open up settings, click on system, and then display. The most common keyboard shortcut combinations are the function key (fn) + the designated key for turning down the brightness or turning it up.Īpart from the 5 methods I shared above, you can automatically adjust brightness according to ambient (surrounding) brightness, but not all Windows 10 computers can do this. Some don't have arrows at all, just the sun icon. The two keys usually have a sun icon with an arrow pointing down to turn down brightness, and another arrow pointing up to turn up the brightness. Most keyboards have shortcuts for decreasing or increasing screen brightness, especially if you are using a laptop. How to Change Screen Brightness with a Keyboard Shortcut Step 5: Check Lower screen brightness while in battery saver Step 4: Use the slider to select the percentage at which you want the battery saver to be turned on Step 3: Under Battery Saver, check “Turn battery saver on automatically if my battery falls below:” Step 1: Click on Start, Settings, and then System. Windows 10 has a feature that allows you to turn down screen brightness when your battery life is at/below a certain percentage. This is a good idea both for your eyes and for your computer. If you like to use a keyboard shortcut, press and hold Windows + I to launch Settings, then click display to get access to the slider for increasing and decreasing screen brightness.ĪDVERTISEMENT How to Change Brightness Settings Automatically According to Battery Life Sliding to the left turns down screen brightness, and right turns it up. Step 4: Right under Brightness and Color, use the slider to adjust Screen Brightness to the level that suits you. Step 3: Open up System, then click Display
Step 1: Click on the Start menu (The Windows icon) You can also adjust your brightness in the settings menu. How to Change Brightness Settings in Windows 10 Settings The first tab you will see is a slider for adjusting the screen brightness to any level you want. Another is by right-clicking on the Start menu (Windows logo) and then selecting “Mobility Center”. One is by right-clicking on your battery meter and selecting “Windows Mobility Center”. ADVERTISEMENT How to Change Brightness Settings in Windows Mobility CenterĪnother quick way to change your screen brightness is to do it in the Windows Mobility Center.
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