2009 Mac Pro 10.13 Sleep problem

[irra7ional]

Hey guys,

So I recently bought a referbed and upgraded Mac Pro from 2009 (5,1 firmware) because I got a great price on it.

The other day I decided to upgrade to High Sierra and since upgrading I have been having issues with my computer falling into sleep state. After it falls into sleep I cant seem to wake it up, the keyboard and the mouse light up, but the monitor doesn't. The power indicators also continue to flash instead of being consistent light.

I dont think it is a graphics card problem but I am running with RX 560 on it.

I tried resetting the NVRAM and the problem persists, outside of sleep everything is buttery smooth.

I will highly appreciate any support!

Thanks in advance

 

[irra7ional]

Hi, just wanted to say I found the solution in this post: https://forums.macrumors.com/threads/high-sierra-10-13-2-broke-sleep.2093595/page-3

and it works