Dual AMD GPU System Problem

[OleksiiTech]

I want to run Dual GPU system, where My main GPU is RX 7600 XT 16GB, and another is 470 8GB. After using DDU, I boot in windows. Before Windows manages to install something by itself, I quickly rush to Auto-detec AMD's utility. https://www.amd.com/en/support/download/drivers.html It works great, detect both GPUs, install drivers successfully. Device manager after driver installation says it's fine, no errors. Moreover, GPUs work as they should and how I wanted them to. Problem: Black screen after reboot, I hear windows boot sound but can't enter system. Can fix this only by unplugging 470 from PC. All displays are connected to RX 7600 XT. Also, I previously used RX 550 2GB on a place of 470 8GB and it worked fine with two different drivers just like in this case. Motherboard is Asrock B550M Pro4.

Goofy picture of build is included for your amusement. Sorry if question is silly.

 

[freeagent]

You should post this in the ghetto mods thread once you get you're answer, this is awesome lol

 

[Kapone33]

This should be interesting.

 

[Marcus L]

I wonder if it is uefi related, some Rx 400 series afaicr didn't have uefi bios, can you post up a gpuz screenshot and a picture of the white sticker on the 470

 

[cal5582]

so ive had an issue similarly to this with my system. for whatever reason even pre-os load in the bios some systems will prefer the nvidia gpu over the amd one. even if you have the amd gpu in the first pcie slot. the only fix i found was plugging a display into the nvidia adapter and then assigning the amd display to be main display in the os, or using a dummy plug like crypto miners use and disabling the fake screen in the os.

try connecting a display to the 470. it might be prefering that gpu and disabling the other.

 

[ShrimpBrime]

With AMDs drivers, it will do mGPU with less or no issues with the smaller card as dedicated. Which I found out running RX 6700 and RX 6700 XT in mGPU mode.

This might be the case for you, using 2 different drivers and vastly different GPUs just will simply cause some issues and there may not be a work around. Because even with the same driver and 2 similar GPUs, can still have issues like the one described above.

 

[GerKNG]

you need two different drivers since GCN is EOL.
i'd suggest that you download both drivers and DDU, disconnect from the internet, boot into safe mode, wipe all existing drivers, reboot and install the RDNA GPU driver first and then "Driver only" for the RX470, THEN reconnect to the internet.
i can not imagine a single reason why someone should ever run this setup for any reason.

 

[Kapone33]

Now that I think about it. What happens if you plug the the Display cable into the 470?

 

[eidairaman1]

I want to run Dual GPU system, where My main GPU is RX 7600 XT 16GB, and another is 470 8GB. After using DDU, I boot in windows. Before Windows manages to install something by itself, I quickly rush to Auto-detec AMD's utility. https://www.amd.com/en/support/download/drivers.html It works great, detect both GPUs, install drivers successfully. Device manager after driver installation says it's fine, no errors. Moreover, GPUs work as they should and how I wanted them to. Problem: Black screen after reboot, I hear windows boot sound but can't enter system. Can fix this only by unplugging 470 from PC. All displays are connected to RX 7600 XT. Also, I previously used RX 550 2GB on a place of 470 8GB and it worked fine with two different drivers just like in this case. Motherboard is Asrock B550M outPro4.

Goofy picture of build is included for your amusement. Sorry if question is silly.

Update your motherboard bios first, rx 7600 came out after amd ryzen 5000 series cpus

 

[OleksiiTech]

You cannot install both drivers at once. They cannot coexist. AFAIK, you need to install only the combined pre-RDNA driver in such a configuration. It is available at the bottom of the page.

https://www.amd.com/en/resources/support-articles/release-notes/RN-RAD-WIN-24-9-1.html

Direct link, not sure it will break: https://drivers.amd.com/drivers/whq...tion-24.9.1-win10-win11-sep-rdna-combined.exe

If it doesn't work, then this configuration should be considered unsupported. It is pretty odd.

I literally did make them work. Yes, I tested both ROCm on RX 7600 XT and Vulcan on RX 470 8GB at the same time. Now testing stability, seems to work after reboot. Used @GerKNG 's method. And yes, they CAN coexist, here some GPU-Z screenshots. GPUs work using different drivers.

As for why 570 and not 470 - it's mining 470 reflashed as 570, but it supports driver natively without patchers and other stuff.

 

[damric]

I always have problems with Polaris cards when running like this for folding@home. It might help to put the RX 470 in the primary slot even though it's the weaker card.

 

[OleksiiTech]

Rebooted couple of times - seems to work. Restart doesn't work for some reason.

you need two different drivers since GCN is EOL.
i'd suggest that you download both drivers and DDU, disconnect from the internet, boot into safe mode, wipe all existing drivers, reboot and install the RDNA GPU driver first and then "Driver only" for the RX470, THEN reconnect to the internet.
i can not imagine a single reason why someone should ever run this setup for any reason.

This is what helped. But there is no "Driver only" option for RX 470, doesn't propose it.
Photo 1 - After cleaning with DDU, driver installation for RX 7600 XT, in additional options - Full Install, factory reset.
Photo 2 - Just Device manager after first driver installed.
Photo 3 - Reboot, then install RX 470 (570, same driver) Driver. It doesn't let you change settings like "driver only", but you don't need to do this.
Photo 4 - As installed, you will probably see this. Anyway, reboot.
Photo 5 - Well, success. Seem to work fine. I can tune both GPUs in Adrenalin, which is great, since I will undervolt a little both of them.

 

[Dr. Dro]

I literally did make them work. Yes, I tested both ROCm on RX 7600 XT and Vulcan on RX 470 8GB at the same time. Now testing stability, seems to work after reboot. Used @GerKNG 's method. And yes, they CAN coexist, here some GPU-Z screenshots. GPUs work using different drivers.

As for why 570 and not 470 - it's mining 470 reflashed as 570, but it supports driver natively without patchers and other stuff.

Very weird, this wasn't supposed to be a thing last I checked. Maybe it changed somewhere along the way. I stand corrected on this. It would definitely be an improvement over the combined driver AMD provides since you can actually use a newer one with the RDNA card. I suppose that is why the installation process ends up being convoluted.

 

[eidairaman1]

I wonder if it is uefi related, some Rx 400 series afaicr didn't have uefi bios, can you post up a gpuz screenshot and a picture of the white sticker on the 470

Being an old card, might need find a newer bios or do a gop update to the existing 1

Rebooted couple of times - seems to work. Restart doesn't work for some reason.

This is what helped. But there is no "Driver only" option for RX 470, doesn't propose it.
Photo 1 - After cleaning with DDU, driver installation for RX 7600 XT, in additional options - Full Install, factory reset.
Photo 2 - Just Device manager after first driver installed.
Photo 3 - Reboot, then install RX 470 (570, same driver) Driver. It doesn't let you change settings like "driver only", but you don't need to do this.
Photo 4 - As installed, you will probably see this. Anyway, reboot.
Photo 5 - Well, success. Seem to work fine. I can tune both GPUs in Adrenalin, which is great, since I will undervolt a little both of them.