sYstem doesn't suspend when i close the lid or in blackscree

Hi Max, welcome to the Bodhi Linux Forum. 

Can you check that you have pm utils installed (it should be installed with a standard 5.1 installation), but there's no harm checking. To verify, open Terminology and run this command: 


sudo apt install pm-utils
It should state that version 1.4.1-17 is installed (or if it's not installed it will install it). Assuming it is now installed, can you check your ACPI Bindings. 

Navigate to: Main Menu > Settings > Setting Panel. With the Settings Panel open, click the "Input" Icon (from the list of icons at the top of the Settings Panel window). In the body of the Inout window you will see Edge Bindings, Key Bindings, etc Now click on ACPI. 

In the list of ACPI bindings, scroll down and find "Lid Close", in the action list ensure "Suspend" is selected. 
 Repeat the above for the other ACPI bindings you mentioned you wanted (ie: Power button, etc). 

if the ACPI settings are correct - can I ask, what happens (if anything) when you use the main menu options to either Hibernate / Suspend / Lock. ie Main Menu > System > Hibernate (or Suspend or Lock). It would be good to know whether these features are working correctly.