Known problem. Here's the workarounds I use: https://ubuntu-mate.community/t/xps-13-9370-wakes-from-sleep-randomly/17877/2 https://ubuntu-mate.community/t/xps-

Known problem. Here's the workarounds I use: https://ubuntu-mate.community/t/xps-13-9370-wakes-from-sleep-randomly/17877/2 https://ubuntu-mate.community/t/xps-13-9370-wakes-from-sleep... and https://askubuntu.com/questions/1029474/ubuntu-18-04-dell-xps13-9370-no-longer-suspends-on-lid-close https://askubuntu.com/questions/1029474/ubuntu-18-04-dell-xp... In addition, I always use a pre-sleep script that disables bluetooth. And enables it afterwards. Hope it helps!