There are command line tools to adjust the contrast of your screen such as xgamma and xcalib. Click the Increase Contrast checkbox, and use the Display contrast slider, to adjust your display.Under Basic and high-contrast themes, choose a high-contrast theme.Under High Contrast, click the button to turn High Contrast mode on or off.Make sure that Turn on or off High Contrast when is checked.Choose Make the computer easier to see.If pressing the key combination doesn't bring up the High Contrast prompt, you can enable it in the Ease of Access menu: To switch back to Normal Contrast mode, repeat step 1, and High Contrast mode will be canceled. Once asked if you want to turn on High Contrast mode, click Yes.Hold the Shift and Alt keys on the left side of the keyboard, and press the Print Screen key.Most laptops don't have contrast controls at the hardware level, but you can configure your operating system to use a high-contrast display mode. To increase the brightness by 10%: xbacklight -inc 10įor a complete list of options, view the manual: man xbacklight Adjusting contrast You can also increase or decrease the brightness by a percentage. To set brightness to full: xbacklight -set 100 For instance, to set brightness to half: xbacklight -set 50 To use xbacklight, specify the option -set percentage, where percentage is a number from 0 to 100. For instance, on Ubuntu or Debian systems: sudo apt-get update & sudo apt-get install xbacklight It can be installed using most package managers. If your laptop uses Intel or NVidia graphics, you can also use a convenient command-line tool called xbacklight.
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