Resolved Mac Pro 5,1 - Radeon R9 290x tearing and sleep issues

mateuszd

macrumors newbie
Original poster
Jun 10, 2019
14
1
Hey guys, quite new here although I've been reading the forum for a while.

This is my first thread, I am also going to raise a thread about CPU issues I'm experiencing.

A few months ago I've acquired a MP 5,1 for free so I decided to turn it into my functional Mac which required a bunch of changes, one of those was an upgrade of the GPU to make 4K work at 60p

I have a 4K monitor so the original ATI card didn't do the job so I got a GTX 960 which did fine in High Sierra but wouldn't work in Mojave so then I got my old Radeon R9 290x installed which kind of works but I'm experiencing two issues with it:
- after a cold boot, the screen experiences some kind of tearing issues, usually visible when moving the mouse. This one is fixable by reconnecting the screen/changing resolutions
- after waking up from sleep, the screen doesn't usually come back on, I have to keep pressing space every few seconds until it eventually comes on, but in some cases, this won't happen and I have to unplug the cable and plug it back in.

Do any owners of the Radeon R9 290x experiences those issues? I have now ordered a Flashable EVGA GTX 680 that hopefully solves the GPU issues, but I wanted to check if anyone is experiencing issues like this. I've not been able to find much about the tearing issue, but if needed, I can post a video of it.

Thanks
 

Alaska_guy

macrumors regular
Mar 30, 2018
137
12
Your second issue happened to me with my R9 280x. How are you powering your video card? I am using mini to 8 pin connectors. My Mac Pro no longer boots up. I have a power supply that should be here today to see if that resolves it. If I put the r9 280x back in my machine I will be doing the pixlas power supply mod.
 

mateuszd

macrumors newbie
Original poster
Jun 10, 2019
14
1
Me too, I'm using the mini to 8pin. I just took out the Radeon and put in a 680 from eBay and the mac booted up, no atrifacts, I'm yet to test sleep behaviour and then I'll flash the card to mac firmware in a few days to have the boot screen.
 

mateuszd

macrumors newbie
Original poster
Jun 10, 2019
14
1
So, running the GTX 680 so far seems to do the trick.
I'd not recommend the R9 290x Vapor-X for use with the Mac.