MacBook Pro 2021 reboots on sleep/energy saving (M1 Pro, mac OS Sequoia 15.2)

Make sure to disconnect all external devices in case one of them is causing a problem.

Try a DFU Firmware Revive which resets the security enclave chip and system firmware. This process requires access to another Mac (most likely requires the other Mac to be running macOS 15.x Sequoia).

If that doesn't help, then I think you will need to perform a clean install of macOS which involves erasing the disk which destroys the data on the SSD, followed by reinstalling macOS & restoring from a backup. If you do this, then performing a DFU Firmware Restore would be the best way to do it since that does everything a DFU Firmware Revive does, plus it resets the internal SSD & pushes a clean install of macOS onto the internal SSD. The reset of the internal SSD may resolve some issues that a typical erase may not.

Here is an Apple article with instructions for the DFU Firmware Revive & Restore:

How to revive or restore Mac firmware - Apple Support

If this doesn't resolve the issue or you don't have access to another Mac for the DFU Firmware Revive & Restore, then you will need to have Apple or an Apple Authorized Service Provider examine the laptop.

I hope you have frequent and regular backups already since there are a lot more new ways to permanently lose access to the data stored on the internal SSD of the recent Macs due to all the hardware, software, and security changes.

eksirf wrote:

• When I close the lid of my MacBook Pro to put it to sleep, or when it goes to sleep/energy saving mode by itself, my Macbook reboots. Unsaved work is lost.

If anyone has any tips, I would be grateful. What I already tried:

reboot => No improvement

• Switched off energy saving => no improvement

• Created another user => no improvement

• with and without connection to the power source => reboots both

• reinstalled Mac OS via restore => no improvement

• Diagnostics with Command+D during startup options => leads to a normal reboot in OS

I am a bit confused.

A SafeBoot Start up your Mac in safe mode - Apple Support will sort many anomalies

Does a quick disk repair before it fully boots up, and certain system caches get cleared and rebuilt, third party system modifications and system accelerations are disabled temporarily.

Login and test. Reboot as normal and test. Caches get rebuilt automatically.

To be proactive you can file a bug report / submit your Apple Feedback here: Product Feedback - Apple

eksirf wrote:

Safe boot does not work as intended. Just turns the system off. I can also not use the diagnose tool.

?

***if you have a wireless keyboard with rechargeable batteries connect the charging cable before booting to Safe Mode.   This will make it act as a wired keyboard and a successful Safe Boot mode.

ref: Start Apple Diagnostics—Apple silicon

Use Apple Diagnostics to test your Mac

ref: Use macOS Recovery on a Mac with Apple silicon

Use macOS Recovery on a Mac with Apple silicon - Apple Support