Do you know that issue you would usually see on notebooks where it refuses to use the dGPU in some games and programs? This is a similar problem, but with a custom built PC (AM5).
I think it's caused by installing the dGPU drivers (most recent, directly from AMD website) and then opening Adrenalin and installing an "update", the version is the same, but it has a more recent release date.
That "update" is probably related to the iGPU because when you install it, the device manager driver error (see image below) disappears and the iGPU information becomes available on the Adrenalin software.
This was right after I installed the drivers of my, soonish to be replaced, RX 480. I used the latest drivers currently available on the website (Adrenalin 24.3.1).
Step-By-Step to replicate the issue:
- Uninstall all AMD drivers
I tested using both AMD's uninstaller and DDU (safe mode), had same issue on both scenarios. - Restart
- Download/Install your dGPU latest drivers -Full Installation-
- Restart
- Open AMD Adrenalin software > Gaming > Graphics
The dGPU is there, but iGPU is missing. - Open the Windows Device Manager, notice that one of the display adapters has a driver issue (PCI\VEN_1002&DEV_164E&SUBSYS_164E1002&REV_CB):
"This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)"
"The driver trying to start is not the same as the driver for the POSTed display adapter." - Activate Adrenalin Overlay (Ctrl + Shift + O) and test any game/stress test it
Everything is working fine. I have all my monitors are connected to the dGPU, so I don't see any issues. - Open AMD Adrenalin software, it says:
"current version 24.3.1 Released: 20/02/2024" > "Update Available! 24.3.1 Released: 20/03/2024"
So, same driver version, but with a newer release date. - Download and install it.
- Restart
- Open AMD Adrenalin software > Gaming > Graphics
You can see both the dGPU and iGPU. - Open Device Manager, everything looks fine. Now you don't see any issues with the drivers.
- Activate Adrenalin Overlay (Ctrl + Shift + O) and test any game/stress test it.
Something is wrong, everything that is more GPU demanding is running really bad.
You can see that the dGPU usage is super low while the iGPU is almost always 100% - Open Device Manager again, disable the iGPU device and try to open AMD Adrenalin
It won't let you open it (I forgot what the message says)
The idea here was to try to force the PC to use the dGPU, but it doesn't work.
You end up having to uninstall the drivers and install only the dGPU drivers.
Anyway, I just wanted to write about this somewhere before sending the bug report, I still want to try to install the iGPU drivers without adrenalin to see if it's a viable solution.
