Mac Mini M4 Sequoia, but same since many years, on Mini Intel 2018, since Big Sur and maybe longer.
[Re-Titled by Moderator]
Original Title: Thunderbolt disconnect on sleep
Mac mini, macOS 15.5
To maintain the thunderbolt and other external connections, disable Automatic computer sleep and only allow the display(s) to turn off.
As a test
Turn On "Prevent automatic sleeping when display is off"
Set "Turn display off when inactive" to 5 or 10 minutes
Leave the Mac Mini On and only allow the display(s) to turn Off
Do not manually Sleep from the Apple Drop Down menu
Shut Down the Mac when away for a day or more
den.thed wrote:
To maintain the thunderbolt and other external connections, disable Automatic computer sleep and only allow the display(s) to turn off.
As a test
Turn On "Prevent automatic sleeping when display is off"
https://discussions.apple.com/content/attachment/1adfb792-3c92-436d-a307-d068185f73fe
Set "Turn display off when inactive" to 5 or 10 minutes
https://discussions.apple.com/content/attachment/daba4e3d-d533-494d-94a3-d9f15e97ec92
Leave the Mac Mini On and only allow the display(s) to turn Off
Do not manually Sleep from the Apple Drop Down menu
Shut Down the Mac when away for a day or more
Thanks for your tentative help, but doesn't work. I turned off all kind of sleepiness from the Mac, via System Controls, but no way. BTW I am not the only affected user, of course I ride the web looking for help, and found many many users with that same kind of problem. Mainly complaining about external displays, and a lot of replies trying to solve the problem on the "faultive display", with no use. My peripheral is a sound card, I have even broken its TB plug by unplug/replug hundreds times. Searching through many requests, the only plausible clue is a problem with MacOS management of the Thunderbolt. Some discussion on Reddit. In despair, though knowing Apple is not much interested in reading the blog on its own site, I throw a bottle with the message...
+1
Thunderbolt disconnects from Mac mini when on sleep mode
