Bug: Two graphics cards; headset is black because app checks drivers of the wrong card

[nevyn]

I've reported this to Oculus Support, but I figured I'd post it here as well so that people googling the problem can find a workaround until the bug is fixed.

I'm using an iMac 27" booted into Windows 10 with a built-in Radeon, and then an external GPU with a Geforce GTX connected over Thunderbolt. I've been using Oculus with the latter for maybe a year without issues. Yesterday, I was upgraded to a big new update of Windows 10 (I'm on Pro 1803), and Oculus stopped working. Headset was black, but led was white (and not orange, thus indicating activity), sound worked and controller interaction worked.

Only after reinstalling drivers, rebooting a dozen times, and doing all kinds of weird stuff, did Oculus start saying with that red banner at the top of the window that my drivers are out of date. This made no sense because I just upgraded my Geforce drivers; BUT, I finally figured out from the more info error that it was looking at the Radeon version!! This card isn't even Oculus compatible, and the Oculus isn't connected to it, so Oculus REALLY shouldn't care or look at this version.

Disabling Rift Core 2.0 Beta then suddenly gave me picture (I assume because the new fancy beta Dash requires very modern drivers). So, it seems some code somewhere in your app is disabling video if it looks like the driver will be incompatible; but the UI is using a _different_ code path to determine if it should show the error message.

In conclusion: Please either autodetect which graphics card the Oculus is connected to and only look at those drivers; or allow me to pick a graphics card to care about in the settings. Also, make sure the UI error message really reflects what the low level code is doing.