Macbook: How to disable M3 Mac auto-boot on lid open?
I tried 'sudo nvram AutoBoot=%00 ' several times, but it didn't work, and i found out that this could brick the machine. 🤦🏻♀️
https://talk.tidbits.com/t/disable-auto-start-when-lid-is-opened-on-a-m3-mbp/25885
I’ve done a lot of searching and from what I can discover the prior command “sudo nvram AutoBoot=%00” apparently no longer works and in some cases it has reportedly “bricked” the machine.
I guess that if it starts on opening to show it is off, you’ll have to hold the power button depressed for ten seconds to interrupt the startup. Hopefully, someone will know how to prevent that.
I have read a lot of complaints about this on the Apple Community. One person noted that AutoBoot is no longer a setting in nvram, but auto-boot is present, and is set to true. It was suggested that sudo nvram auto-boot=false might work, but there were no replies saying it had worked. Given the old nvram command can brick a machine I’m reluctant to try it out.
https://discussions.apple.com/thread/254412554?sortBy=rank
I haven't seen anyone post anything about this "nvram" command since the M1's were released in 2020 where a couple users reported having major issues, even suggested their M1 Macs were bricked, by using those nvram commands. I won't even try it until I have an M1 Mac which is going to be be junked or will need a new Logic Board as it is not worth the risk to find out. Like @leroydouglas mentions I am not aware of any option to disable auto-boot on an Apple Silicon Mac. In fact, this option on the Intel Macs only affects auto-boot while opening the Display and not the pressing of any key to power on the Mac. I would be very cautious using options that are not verified to be compatible with the M1/M2 Macs. Of course it is your laptop. Remember a Logic Board is an expensive repair if the "nvram" command bricks your Logic Board. No idea whether a "Restore" will do anything to fix any problems the "nvram" command may cause.