Suspend menu option vanishes in Linux Mint

This has happened a few times for me so I am documenting it for next time and for other people with the same issue.
Run the following command in a terminal.
bash
gsettings reset-recursively org.cinnamon.settings-daemon.plugins.power
Yes there are many other things to try but this works reliably for me with no need to reboot.
Note: It will take a few minutes to display. I was closing all apps to reboot after modifying Grub but found the option in place.
FYI.
Here are the fixes for Grub iof needed.
bash
sudo xed /etc/default/grub
Find the line GRUB_CMDLINE_LINUX_DEFAULT.
Change it to add one of these common ACPI fixes:
bash
# Try this one first
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_sleep=nonvs"
# Other options to try if the first fails:
# GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force"
# GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pci=noacpi" # More drastic Save the file (Ctrl+O, Enter, Ctrl+X), then update GRUB and reboot:
bash
sudo update-grub
sudo reboot