PhialsBasement

"LD_* scout runtime" information:
{
  "steam-runtime-system-info" : {
    "version" : "0.20260618.0+srt1",
    "path" : "/home/phiality/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/bin/steam-runtime-system-info"
  },
  "can-write-uinput" : true,
  "steam-installation" : {
    "path" : "/home/phiality/.local/share/Steam",
    "data_path" : "/home/phiality/.local/share/Steam",

PhialsBasement

Single-GPU Passthrough: AMD RX 9070 XT (Navi 48 / RDNA 4) on CachyOS

Battle-tested config for passing through a Sapphire Pulse RX 9070 XT to a Windows 10/11 guest on a single-GPU, no-iGPU system. Everything below was debugged across dozens of reboots — if it says "don't do X," someone already tried it and got burned.

Hardware

CPU	AMD Ryzen 5 5600X (Zen 3, no iGPU)
GPU	AMD Radeon RX 9070 XT (Navi 48, RDNA 4) — 1002:7550 + 1002:ab40