How do I put my Mac Pro to sleep by pressing the power button?

[weezin]

The option to set the power button sleep feature is available in Onyx under 'Parameters / Login'

Interesting! I downloaded Onyx for Lion and the option doesn't appear to be there for some reason. I keep striking out here!

 

[w1z]

Interesting! I downloaded Onyx for Lion and the option doesn't appear to be there for some reason. I keep striking out here!

Not sure about OS X Lion but it's definitely there for recent macOS Onyx releases.

 

[weezin]

Not sure about OS X Lion but it's definitely there for recent macOS Onyx releases.

Gotcha. Thanks anyway, appreciate the help!

 

[vkd]

Yeah, that's not the same ... hot corners don't allow computer sleep (nor should they).

OK but if you didn't change your Energy Saver settings, the standard timeouts are set to 10 minutes, so at least you will immediately gain a big saving by sleeping the display, then 10 mins later if you don't touch it, the computer will automatically go into sleep mode. Perhaps the overall cost difference will be 4 or 5¢ on your electricity bill.

 

[llllllllll]

The option to sleep the system when pressing the power button can be enabled by running the following command in terminal

defaults write com.apple.loginwindow PowerButtonSleepsSystem -bool yes

to disable run

defaults write com.apple.loginwindow PowerButtonSleepsSystem -bool no

Apologies for dragging up this somewhat old thread but it was the best I could find relating to my issue -

I'm on an intel 16"MBP running Catalina, and the above terminal command does not work for me unfortunately.

I have Onyx installed and I can see the option that has been mentioned under parameters > login but can't use it (it's greyed out).

Downloaded Tinker Tool 7 and the mentioned option is available there yet checking / unchecking the box does nothing.

I did log out / log in / restarted the machine after trying all these procedures, to no avail.

Any other ideas anyone?

Thanks!