I´d like to use my Asus Zephyrus G14 and Oculus Link for playing PC VR games with my Oculus Quest. However there is a strange issue with that device.
This is what I found out so far:
The Asus Zephyrus has a powerful AMD Renoir CPU (Ryzen 4800) and therefore also sports an iGPU (AMD Vega (not very powerful as it is just an iGPU) ). But it also has a medium class GPU (NVidia RTX 2060 Mobile) which is powerful enough for most games - at least in lower detail settings.
It seems like Oculus Link gets confused which one to use or most probably which frame buffer to access. Here is why:
- if I force the usage of the RTX2060 using the Nvidia control panel I will get a blackout in VR once I activate Link Beta - absolute blackness
- if I do not force usage of RTX2060 as GPU it will use the iGPU of the AMD CPU - it will be terribly slow and stuttering - but at least I will see the virtual home in the oculus software (or steam vr) or the PC VR games on my Quest Headset (also unplayable slow).
So... After a long time experimenting with this issue I found out that DISABLING the AMD Radeon iGPU in the windows device manager and rebootingt will fix this issue for steam VR, Half Life Alyx and also for Oculus Virtual Home.
Unfortunately it does NOT fix the issue for Oculus PC VR Game Lone Echo (and most probably some other Oculus games too) - I can´t tell whats happening there exactly because I do see a picture in the Quest - but its slow as if it was using the iGPU - which can´t be because its disabled... probably it falls back to software rendering for some reason.
I assume that this is a general issue with a wider range of multi-GPU setups and I hope Oculus will fix it sometime - it should be possible to tell the oculus software which GPU it should use (or make it more intelligent in detecting).
But any help enabling me to play Lone Echo would be highly appreciated.