Mac Pro starts up on its own from sleep mode

[soitai]

I have a Mac Pro and when I put it to sleep, it randomly starts itself back up-sometimes after 2 minutes and sometimes after 3 hours. I've tried repairing permissions, maintenance, etc. and have no clue as to what might be causing this. Any ideas?

 

[666sheep]

Try this: https://forums.macrumors.com/posts/9969414/

 

[BobHail]

Yeah I had this year ago. It usually woke up during the night I was sleeping, but usually in the morning when I was "half a sleep" and I could hear it waking, so approx after 8 hours I put it to sleep. This lasted couple months and then suddenly for no reason it stopped.

I was free of it about an year, but just last week it just suddenly started again for no reason. 😕

 

[soitai]

I took a look at the reference you sent 666sheep and I'll try it and see what info it gives me. thank you both for your quick response.

 

[kellen]

Is ethernet wake from sleep on? Or BT?

 

[soitai]

kellen, waking for network access is unchecked. pardon my ignorance, what is BT?

 

[soitai]

thank you all for your help. In the end it was the trackball which I use in place of the conventional mouse that was causing the problem. Disconnecting it from the keyboard when I put it to sleep has solved the issue. Thanks again.