Help with passthrough: Getting Valve Index to work with an Alienware M15 R5.

[Sporecore]

Hi! I have an Alienware M15 R5 that I received a few years back as a gift, kitted out with a Ryzen 5800H and an RTX 3050. I also have a Valve Index that I purchased recently to play some VR games, when to my dismay I found that the Displayport-compatible USB-C port on the back was wired to the onboard graphics, and not the discreet GPU. So far, all my research into passthrough has been clogged with results about virtual machines, and I haven’t been able to find anything related to this issue. If anyone has any ideas/tips, that would be greatly appreciated.

[Sporecore]

If it helps, the only I/O provided on the 3050 is a single HDMI 2.1 output.

[adm0n]

Can't you just use the USB-C cable and have the RTX 3050 stream its content to the internal GPU? In windows you can usually just set a program to run with the higher power GPU and it will do everything else automatically. But it will cost a bit of performance. Otherwise you could probably also get an active HDMI to DP converter

 

[Kilrah]

Yes, just use it. It'll do what it needs.

[Sporecore]

45 minutes ago, adm0n said:

Can't you just use the USB-C cable and have the RTX 3050 stream its content to the internal GPU? In windows you can usually just set a program to run with the higher power GPU and it will do everything else automatically. But it will cost a bit of performance. Otherwise you could probably also get an active HDMI to DP converter

 

I’m afraid that the usual did not work. Despite setting a variety of SteamVR and game executables to use the 3050, it all routed to the iGPU regardless.

Would you happen to know of a good HDMI to Displayport active converter? 

[adm0n]

5 minutes ago, Sporecore said:

I’m afraid that the usual did not work. Despite setting a variety of SteamVR and game executables to use the 3050, it all routed to the iGPU regardless.

That's kinda weird though. Does it also happen with non VR games?  Also how do you know, that it is running on the iGPU? Sometimes it just reports the iGPU, because it uses its display output, but the actually processing happens on the real GPU. If you want, check in task manager, to see which GPU is actually being loaded.

11 minutes ago, Sporecore said:

Would you happen to know of a good HDMI to Displayport active converter? 

Not really. But any that have the necessary specs, should run fine.

[Sporecore]

Just now, Sporecore said:

I’m afraid that the usual did not work. Despite setting a variety of SteamVR and game executables to use the 3050, it all routed to the iGPU regardless.

 

29 minutes ago, adm0n said:

That's kinda weird though. Does it also happen with non VR games?  Also how do you know, that it is running on the iGPU? Sometimes it just reports the iGPU, because it uses its display output, but the actually processing happens on the real GPU. If you want, check in task manager, to see which GPU is actually being loaded.

Not really. But any that have the necessary specs, should run fine.

Nope, regular games use the 3050 just fine, vr games alone seem to be the problem. When I checked task manager, the iGPU was at 100% utilization and the 3050 was sitting at a chill 15%

[adm0n]

2 minutes ago, Sporecore said:

 

Nope, regular games use the 3050 just fine, vr games alone seem to be the problem. When I checked task manager, the iGPU was at 100% utilization and the 3050 was sitting at a chill 15%

Have you tried fixes like these?