Mac Studio restarts unexpectedly whenever I leave it unattended for over 1 hour. I need it to remain on as I'm performing some lengthy backups, which keep stopping when it restarts.

Kernel Panic Reports are stored at:

/Library/Logs/DiagnosticReports

If you copy and paste that string into:

Finder > Go menu > Go to Folder

it will take you to where those reports are stored.

They are named with Date&Time and start or end in ‘panic’

If you find one, please post the entire report here, by using the “additional text” Icon in the reply footer (looks like a paper with writing).

Please don’t post more about 20 lines of any other types of reports — they are interminable, and any information useful for this purpose is on the first screenful.

1. Pull down the  Apple menu and go to “System Settings”
2. Go to “Displays”
3. Click on “Advanced…”
4. Toggle the switch for “Prevent automatic sleeping on power adapter when the display is off”