Issue with Valve Index

I got myself a valve index, as I've heard that it works well on GNU/Linux (I use Debain 12 with GNOME). Turns out, there were a bunch of hurtles. At first, my cable was just broken, so I needed to get that relaced. Later on when I got the cable, Everything worked fine, but nothinig is being displayed in the headset. The screen is just off and the frightening red lights on the front are lit. Every time I run steamVR, it doesn't give me any errors, but after about 20 seconds of waiting, these two LEDs turn from blue to red. The eye adjustment slider and even the tracking works perfeclty, as I can see the rendered image in the "VR view":

I also get this warning in the console before the lights turn red:

(vrwebhelper:3686): dbind-WARNING **: 15:09:07.618: Couldn't connect to accessibility bus: Failed to connect to socket /run/user/1000/at-spi/bus_1: No such file or directory

The lights turn blue again when restarting SteamVR. Has anyone experienced anything like this before?

I also get this error sometimes, even though the display is very much plugged in:

In case it matters, here is the entire console output up from running steamVR:

EDIT: Here is some other important info on my system:

• Running the X version of GNOME
• GTX 1060 6GB