If mmmrr has a "Mydesk" directory on the desktop, then it is "Friendly-Bionic32" from here: viewtopic.php?t=5188
It is a remaster of Bionic32 that includes many extras including a "suspend" icon on the desktop. In Friendly-Bionic32 the suspend.sh script is located /root/my-applications/bash/.
There are at least 3 suspend commands that I know of and you have to try them on different hardware to see which one works for you.
Here is a script file that includes all 3. You have to open it in Geany to changes commands, comment & uncomment lines as needed. Be sure to make the file executable.
wizard