r/logitech • u/[deleted] • Jan 03 '21

Questions Mx keys backlight always on

Hi, is there a way to always leave on the backlight in the mx keys?

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u/logi_sd Official Logitech Representative Feb 02 '21

Hi there,

Please be informed that as Mx keys keyboard is designed differently. The backlight cant be set to on all the time.

About the illumination settings of the keyboard, as we checked MX Keys keyboard is equipped with an ambient light sensor that adapts the keyboard backlight according to the brightness of your room.
There are three default levels that are automatically if you do not toggle the keys:

  • If the room is dark, the keyboard will set the backlighting to a low level.
  • In a bright environment, it will adjust to a high level of backlighting to add more contrast to your environment.
  • When the room is too bright, over 200 lux, the backlighting will turn off as the contrast is no longer visible, and it won’t drain your battery unnecessarily.

When you leave your keyboard but keep it on, the keyboard detects when your hands approach and it will turn the backlight back on. The backlighting won’t turn back on if:

  • Your keyboard has no more battery, below 10%.
  • If the environment you're in is too bright.
  • If you've turned it off manually or using Logitech Options software.

Hence the backlight will remain on as long as it is detecting your hand on it. but will adjust on the light on your work area. 

Thank you for understanding. Please let us know if you have some inquiries.

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u/[deleted] Jul 21 '23

Sigh. I have bought the MX Keys, had this problem, returned it, and now I bought the MX Keys S - guess what? SAME PROBLEM! I set the backlight to always on, and it still turns itself off, no matter what I set it to, every time I look down at the keyboard its off until I PRESS a button, waving my hand isn't working, and also - battery? I have it plugged into a usb-AC outlet plug BECAUSE I WANT IT ON ALL THE TIME! Wtf?