Pegasus2 R6 Prevents Late 2019 Mac Pro From Sleeping

  • Last Post 12 August 2020
Thomas Wheeler posted this 10 August 2020

I have been using a pair of Pegasus2 R6 systems with my Late 2019 Mac Pro since December when I purchased and set up the Mac Pro.  Until recently, when I selected Apple>Sleep, the Mac Pro went to sleep and put the Pegasus2 systems to sleep as well.  A few days ago I noticed that when I slected Apple>Sleep, my Pro XDR display turned off, but my Pegasus2 systems and my other external hard drives did not go into sleep mode. I established that the failure to go into sleep mode was due to the Pegasus2 systems by shutting down the computer, disconnected them, rebooting, waiting 30-40 seconds and selecting Apple>Sleep. After about 30 seconds the Mac Pro went to sleep and put all of my external hard drives to sleep normally. Does anhyone have a solution to this problem as I do not like to leave my Pegasus 2 systems running 24/7?


Ranjith kumar posted this 12 August 2020

Hi Tom,

In order to assist you on this we need to analyse the subsystem report, please save and attach it to web support case id at 

Steps to save the subsystem report:

- Open promise utility

- Click subsystem information icon on the top of the Promise Utility window

- Click the lock symbol on the left bottom corner of the screen to unlock the utility

- Click on save service report button to save the subsystem report


Promise Team