[SOLVED] AMD Radeon RX 570 Not displaying correctly

[pkdesign]

Hmm. I just installed a Gigabyte Radeon RX 570 4GB card (https://www.newegg.com/Product/Product.aspx?Item=N82E16814125966), and with nothing particular checked or selected in config.plist I get boot and the computer recognizes the card natively. Yay. For the most part everything works and seems much faster than my old Nvidia Geforce GTX 750 Ti (which I loved but looks like Mojave will not support it.) It is connected via DP to MiniDP on my Dell U2715H monitor. The old DVI to HDMI that I used for the 750 Ti doesn't work. Not sure why except that it tells me not supported resolution(?).

But, in System preferences it shows up with a refresh rate of 59.88 Hertz (NTSC), and on screen I do not get sharp text (I'm referring specifically to the brownish artifacts on the text)->



Also my Dell U2715H is set to YpbPr. If I set it to RGB the screen goes green. At boot, half way through I get that flash on the screen and then blank, but eventually it gets to desktop.

I've tried to add Lilu and WEG, no difference. I also edited config.plist to add framebuffer=Orinoco and checked Inject ATI, and RadeonDeint. Still the same.

I have completely uninstalled the old Nvidia drivers (including CUDA drivers). I have ordered a new DisplayPort cable in case that is the reason. I'll see tomorrow.

Any help or idea? I really don’t want to return this card.

EDIT 18-12-03:
After more testing, I have to check Inject ATI otherwise System Profiler only shows PCIe Lane Width: x2. With it checked it says x16

I've read through many more posts to see that he "flash" I'm seeing is a known problem and has to do with secondary load phase. Pretty awful if you ask me. My GTX 750 Ti didn't do that.

EDIT 18-12-03 B:
I got my new DP cable and that hasn’t fixed anything. It would seem that my monitor is being recognized as a TV monitor? All I get are NTSC and PAL options in Display preferences.

 

[trs96]

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[pkdesign]

This finally fixed my issue! https://www.tonymacx86.com/threads/...d-graphics-cards.171291/page-256#post-1866966

 

[phrozenpenguin]

@pkdesign or @trs96 sorry for joining an old thread but I am hoping you can tell us if your card is truely silent (fans stop) under load? Gigabyte advertise it but I am wondering if that is built into the card and works on macOS, or relies on some Windows utility so the fans actually run all the time on macOS?

 

[pkdesign]

Well I can’t tell you for sure because I do not look into the case, but my hardware monitoring app will show the fans at zero often. Then it might get up to 30-40%. So, I think they do indeed stop.

BTW I really don't tax my video card at all. I might use 500Mb of the 4Gb of memory. Utilization will show 1-5% under normal use!

 

[phrozenpenguin]

Well I can’t tell you for sure because I do not look into the case, but my hardware monitoring app will show the fans at zero often. Then it might get up to 30-40%. So, I think they do indeed stop.

BTW I really don't tax my video card at all. I might use 500Mb of the 4Gb of memory. Utilization will show 1-5% under normal use!

Thank. What hardware monitoring app do you use (assuming you mean on macOS)?

 

[pkdesign]

HWMonitorSMC2