It is usually a function key marked with the sun logo, located at the top of the keyboard, Most laptop keyboards have shortcut keys that can quickly adjust brightness. If you are using a laptop, you can adjust the screen brightness in the following ways. Change the screen brightness using hotkeys If you click it, it will switch between the predetermined brightness settings: 0%, 25%, 50%, 75%, and 100%. There will be a sun-shaped brightness icon in the menu, which is used to adjust the brightness.
You can also press the Windows key + A to open the menu. After clicking this icon, a menu will pop up. There is a square bubble-shaped icon on the far right side of the windows taskbar.
Change the brightness on Windows 10 using the quick actions
(the slider bar may not be displayed for windows 10 with a lower version number). Move that slider to adjust the brightness of your device. Now under ‘Display’, you will find ‘Change brightness’ slider on the top. Go to ‘Settings’ and then select ‘System’. Change the brightness using the settings UI This makes it easier for us to change brightness. Fortunately, Windows 10 has introduced a new brightness change feature. Adjusting the screen brightness can improve eye health and comfort.īut for Windows systems like Windows XP、Windows 7, change brightness is usually a troublesome thing because it often requires more complex operations to darken the display brightness. If your screen brightness is too high, you may experience eye fatigue or headaches. It is very important to change the screen brightness to a suitable level. Linux pop-os 5.11.0-7612-generic #13~1617215757~20.For people who work long hours in front of a computer, the eyes need more protection than the shoulders、 neck、back、waist and arms, because the eyes are an important part of our access to external information. The only way I can adjust the screen brightness as all is using xrandr: e.g. Looking at the output of journalctl -b -0|grep light: all looked normal, except for an error saying "Apr 27 11:10:45 pop-os system76-power: hid_backlight: no system76_acpi::kbd_backlight led" (presumably because the laptop does not have a light-up keyboard).Ĭhanging the permissions of /sys/class/brightness to user instead of root.
The same problem occurs if I use the Gnome brightness slider from the top right-hand corner of the screen. However, even though the slider changes, the actual screen brightness stays the same. Pressing the physical keyboard keys to control brightness will make the normal-looking brightness prompt show up on the screen and increase/decrease the slider, depending on which button I press. The laptop is stuck at a certain mellow screen brightness, and I cannot change it. I have an issue regarding screen brightness. I'm dual-booting a laptop (Dell Precision 7550) between Windows 10 and pop!_os 20.10, equivalent to Ubuntu 20.10.