# BC-250 Console — local build → ISO

Custom recipe: `recipes/bc250-console-gnome.yml` (Bazzite GNOME + cyan-skillfish
governor + SSH/RDP remote admin + BC-250 ttm kargs). Build path is **local**
(no CI, no registry, no cosign needed).

## 1. Build the OCI image (any Fedora/bootc box, VM OK)

```bash
# prereqs: podman + bluebuild CLI
sudo dnf install -y podman
# bluebuild CLI: https://blue-build.org/how-to/setup/#installation
podman run --rm ghcr.io/blue-build/cli --version   # or install natively

bluebuild build ./recipes/bc250-console-gnome.yml
```

Result lands in local podman storage as `localhost/bc250-console-gnome`.

### Kernel sanity check (before making the ISO)

Avoid kernels 6.15.0–6.15.6 and 6.17.8–6.17.10; prefer 6.18.x LTS or 6.17.11+.
The kernel comes from the Bazzite `stable` base — verify what you got:

```bash
podman run --rm localhost/bc250-console-gnome:latest rpm -q kernel
```

If it lands in a bad range, wait for the next Bazzite stable or pin an older
`image-version` in the recipe.

## 2. Generate the installer ISO

```bash
mkdir -p output
sudo podman run --rm -it --privileged \
  --security-opt label=type:unconfined_t \
  -v ./output:/output \
  -v /var/lib/containers/storage:/var/lib/containers/storage \
  quay.io/centos-bootc/bootc-image-builder:latest \
  --type iso \
  localhost/bc250-console-gnome:latest
```

ISO appears under `output/bootiso/`.

## 3. Smoke test + install

1. **VM test**: boot the ISO in a VM, install, reach GNOME. This validates
   composition/installer only — not the BC-250 GPU/governor/Mesa path.
2. Flash to USB (Fedora Media Writer / Impression / `dd`), install on the
   board. Black screen at install → "Install in Basic Graphics Mode".
3. First boot, in the child's desktop session: run `bc250-remote-setup`,
   log into Steam, set Steam Family View, `sudo tailscale up` if using it.

## 4. On-hardware validation (board, not VM)

```bash
vulkaninfo | grep deviceName            # RADV GFX1013, NOT llvmpipe
systemctl status cyan-skillfish-governor-smu   # active
cat /sys/class/drm/card0/device/pp_dpm_sclk    # scaling present (may be card1)
sensors                                  # sane temps; watch backplate airflow
cat /proc/cmdline | tr ' ' '\n' | grep ttm     # ttm.pages_limit / page_pool_size
```

Then a real game for 30+ minutes for thermal/power stability.

## Not baked into the image (per-board/per-user)

Modded BIOS + BIOS settings (512 MB dynamic VRAM, IOMMU off, auto power-on),
RDP password/TLS cert, Steam login, Tailscale auth.

## Security

- SSH/RDP LAN- or tailnet-only. Never port-forward 22/3389.
- If this ever moves to a registry (Gitea) for OTA updates: generate your own
  cosign keypair, re-add the `signing` module, and never reuse upstream's key.