I am using a MacBook with an external monitor. While it is connected I do not need the inbuild monitor. But when closing the lid, the internal monitor turns off when the Mac is not connected to power.
To solve this issue, I created this AppleScript-based application - Sleepo.
Be aware that this tool is quite powerful. It overrides system values. You need to know that, if the tool is activated, your Mac cannot go intostandby. So if you put your Mac in a closed bag it cannot cool. This can cause overheating or other damage.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
The technique behind Sleepo is quite simple: It manipulates the power management settings (pmset).
For this, it needs superuser (sudo)/administrator privileges.
Currently, no direct download is available, due to Apples developer program fees.
But you can easily clone this repo and export Sleepo in Xcode: Product -> Archive -> Distribute App -> Custom -> Copy App -> Select destination.
Optional: Drag the app to your Applications folder and you are ready to go.
Currently no download is available. Just clone this repo and export Sleepo in Xcode.
The user interface is the easiest way to manipulate pmset. Just start
Sleepo and (de)activate it with the switch. That's it!
You use the commands at your own risk!
If you do not want do download Sleepo, you can directly manipulate pmset.
To stop your Mac goring into sleep when the lid is closed open your Terminal and enter the following command:
sudo pmset displaysleep 0
To reset pmset to its defaults just change the 0 to a 1.
That's it! If you want to display the current settings type:
sudo pmset -g
Sleepo is compatible with all MacBooks which are running at least macOS 10.15.