AMD Motherboards - X470 Master SLI/ac & RX 5700xt reboots

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X470 Master SLI/ac & RX 5700xt reboots

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=11991
Printed Date: 05 Jan 2025 at 8:58am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: X470 Master SLI/ac & RX 5700xt reboots

Posted By: ThreeDee
Subject: X470 Master SLI/ac & RX 5700xt reboots
Date Posted: 24 Jul 2019 at 10:51am

I have the X470 Master SLI/ac with the 3700x. I recently purchased ASRock's RX 5700xt video card. Initially I kept getting reboots after installing drivers. First attempt finished with my screen turning a green hue and then my setup rebooted.

After several unwanted reboots I remembered reading about changing PCIe settings from 4.0 to 3.0 helped Destiny 2 not working .. soo I fished around in my BIOS (rev 3.30) and saw 2 PCIe type settings for Auto/Gen 1/Gen 2 .. I changed them both to Gen 2 and now no more reboots and I have been gaming without issue.

My question is .. first, why did I have to do this to begin with .. and second, what exactly does Gen 2 put at as far as PCIe specs?

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|Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15|

Replies:

Posted By: JasonASR
Date Posted: 24 Jul 2019 at 11:25am

OMG, you sound like you are having the exact same issue as me which I posted about on here a few days ago. I only tried changing the PCIe Switch to Gen2 and it didn't do anything. I didn't think to try to change the other one because I didn't know what it does. I also cannot find any information as to what Gen1/2/Auto is, which is really annoying. My suspicion is that the driver and/or motherboard is trying to force PCIe 4.0 and this is why the driver won't install.

Posted By: JasonASR
Date Posted: 24 Jul 2019 at 11:26am

As far as what Gen2 affects, can you check in Adrenalin what your current PCIe Bus Setting is at? If it says 3.0 that is a good sign.

Posted By: ThreeDee
Date Posted: 24 Jul 2019 at 12:06pm

Posted By: JasonASR
Date Posted: 24 Jul 2019 at 1:33pm

So there are three areas where I can change PCIe speed settings on my X470 Gaming ITX/ac motherboard BIOS with AGESA 1.0.0.1.

1: AMD CBS\NBIO Common Options\Force PCIe gen speed. Options are Gen1/Gen 3/Auto
2: AMD PBS\PCIe x16 Switch. Options are Gen1/Gen2/Auto.
3: AMD PBS\Promontory PCIe Switch. Options are Gen1/Gen2/Auto.

Which ones did you change?

Posted By: ThreeDee
Date Posted: 24 Jul 2019 at 1:57pm

AMD PBS PCIe x16 Switch to Gen 2 .. and it forces me to PCIe 2.0. I'll check out the CBS setting and see if that will just force everything to Gen 3.

PBS Promontory PCIe switch, I switched back to Auto and no reboots

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|Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15|

Posted By: ThreeDee
Date Posted: 24 Jul 2019 at 2:22pm

1: AMD CBS\NBIO Common Options\Force PCIe gen speed. Options are Gen1/Gen 3/Auto

...looks like I don't have this option in my BIOS

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|Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15|

Posted By: JasonASR
Date Posted: 24 Jul 2019 at 2:52pm

I just put the 3700X back into motherboard and you are correct. That option disappears. I also tried setting the PCIe Switch and Promontory to Gen2 and it doesn't work for me, sadly. I can only get 5700 XT to run with the 2700X.

Posted By: JasonASR
Date Posted: 24 Jul 2019 at 4:50pm

I give up hope on this. I'm pretty sure ASRock has released a faulty BIOS and will just have to wait for it.

Posted By: ThreeDee
Date Posted: 24 Jul 2019 at 10:17pm

JasonASR wrote:

I give up hope on this. I'm pretty sure ASRock has released a faulty BIOS and will just have to wait for it.

Hopefully they get this resolved sooner rather than later.. My x470 and the B350 Fatality that is in my daughter's rig have been rock solid (she got my 2700x and was running a 2200g) so that's why I gave ASRock my business with purchasing their RX 5700xt and am confident that they'll address these "growing Pains" soon..

hopefully ...

Posted By: JasonASR
Date Posted: 25 Jul 2019 at 8:26pm

ASRock sent me a beta BIOS 3.41 (AGESA 1.0.0.3AB) for X470 Gaming ITX/ac, and I can now install the AMD driver. There are also now options under AMD PBS to set PCIe Switch and NVMe to Gen3 (which is the default setting).

Posted By: ThreeDee
Date Posted: 26 Jul 2019 at 6:14am

JasonASR wrote:

ASRock sent me a beta BIOS 3.41 (AGESA 1.0.0.3AB) for X470 Gaming ITX/ac, and I can now install the AMD driver. There are also now options under AMD PBS to set PCIe Switch and NVMe to Gen3 (which is the default setting).

Nice! .. I just updated to the 3.40 BIOS and see the GEN 3 default selections and am running on PCIe 3.0 now with my 5700xt .. but as I write this I am updating to the latest Radeon driver and my screen just went to a green hue .. grrrr

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|Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15|

Posted By: ThreeDee
Date Posted: 26 Jul 2019 at 6:20am

Posted By: ThreeDee
Date Posted: 26 Jul 2019 at 2:16pm

I've been gaming for several hours now and not one issue. I was contemplating returning my shiny new RX 5700 XT and was looking over the RTX 2070's .. or maybe grabbing an X570 mobo .. Gonna hang on to my Master SLI/ac and video card.. Thanks ASRock!

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|Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15|

Posted By: ThreeDee
Date Posted: 29 Jul 2019 at 1:34am

BIOS 3.40 for my mobo cured all my woes .. I only had one woe, but it's cured now!

Running RX 5700xt at PCIe 3.0 (Gen 3)instead of having to manually select Gen 2 to get windows stable.

Going from 2700x to 3700x I can now run 4 dimms all at 3200 (rated speed) instead of 3000

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|Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15|