If I hold the Fn button and "l" key, the computer goes to sleep.

Where is this behavior defined?

I'm on a stationary computer, using Ubuntu 18.10

I'm using a Logitech K380 bluetooth keyboard

  • What type of keyboard are you using? As far as I know there is no way to define the Fn key combos within the OS itself. – Terrance Mar 30 '19 at 1:59
  • I'm using a Logitech K380 Bluetooth keyboard – Jason Hunter Mar 30 '19 at 2:00
  • I only use Fn modifier key in conjunction with one of the function keys (F1 through F12). Out of curiousity what were you expecting Fn+I to perform? – WinEunuuchs2Unix Mar 30 '19 at 14:14
  • Well, I am trying to hit Ctrl-l, the Chrome shortcut to highlight the address bar;) It's just that sometimes I miss and then the whole computer goes to sleep. Quite annoying;) – Jason Hunter Mar 30 '19 at 23:00

I have the same keyboard and this was driving me nuts for exactly the same reason. Anyway, the fix in this Reddit thread solved it for me.

By editing /etc/systemd/logind.conf and setting HandleSuspendKey=ignore, I'm able to press the Fn+L combination without anything happening.

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