Another workaround that I used for Cinnamon. I can't imagine it would be
too much trouble to adapt it to other window managers:
1. Use dconf-editor to change the button-suspend action at org>cinnamon
>settings-daemon>plugins>power to 'nothing' (you could also amend lid-
close-ac-action and lid-close-battery-action as well if you're using a
2. Save the following script to a convenient location (it locks the
screen, then suspends):
3. Use the System Settings app (cinnamon-settings) to create a custom
keybinding for the sleep key that points to the script.
After this it behaves as it should. You can see the lock screen pop up
briefly before it goes to sleep, which is reassuring.
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Desktop contents displayed on resume, before lock screen is shown
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