Ubuntu
bluez package

  1. Bug #1246981
  2. Comment #27

Comment 27 for bug 1246981

Revision history for this message
Jesper Broge Jørgensen (fnugk) wrote : Re: Bluetooth mouse fails to re-connect after sleep.

I'm having this same problem in ubuntu 17.10 with an apple keyboard.
Disabling and enabling the device in the settings GUI manually fixes the problem until the machine sleeps again