113 lines
6.3 KiB
Markdown
113 lines
6.3 KiB
Markdown
# bc250-console
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A custom [Bazzite](https://bazzite.gg) GNOME (bootc) image for the **AMD
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BC-250**, built as a kid-friendly couch gaming console with remote parent
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administration. Recipes build with [BlueBuild](https://blue-build.org); the
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installer ISO comes from bootc-image-builder; installed consoles update
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over-the-air from this Gitea's container registry.
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**Image:** `git.lazypugs.com/ckoch/bc250-console-gnome:latest`
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**Recipe:** [`recipes/bc250-console-gnome.yml`](recipes/bc250-console-gnome.yml)
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## What it adds on top of `bazzite-gnome:stable`
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| Area | Change |
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|---|---|
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| GPU | `cyan-skillfish-governor-smu` (BC-250 DVFS governor, from the [filippor COPR](https://copr.fedorainfracloud.org/coprs/filippor/bazzite/)), enabled |
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| Memory | `ttm.pages_limit` / `ttm.page_pool_size` kargs so the GPU can use the full 16 GB shared GDDR6 |
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| Remote admin | `openssh-server` (enabled); **Sunshine** auto-serves the kid's session to Moonlight; `tailscaled` enabled. (RDP via `bc250-remote-setup` exists but is blocked by a mutter/GFX1013 crash) |
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| Console behavior | All suspend paths masked, no screen lock/dim, GNOME animations off — always on, always reachable |
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| Kid experience | Steam Big Picture autostarts for the `kid` account only |
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| Apps | First-boot flatpaks: ProtonUp-Qt, Heroic, RetroDECK, Prism Launcher (Minecraft), Chromium, Moonlight — Steam, Firefox, auto-updates already in the Bazzite base |
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| Cloud gaming | GeForce NOW via a Chromium web-app shortcut (the native GFN app requires Vulkan video decode the BC-250 physically lacks — error 0xC0F11312). Moonlight client included for streaming from a home Sunshine host. Streams CPU-decode; keep to 1080p |
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| Fixes | `hhd.service` masked (crash-loops on BC-250) |
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| Docs | Parent manual baked at `/usr/share/doc/bc250-console/OPERATIONS.md` |
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## Accounts
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Build with [`build-console.sh`](build-console.sh) + your `console.env` to
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bake real usernames, passwords, and display names directly into the ISO
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(see BUILD-CONSOLE.md). Without it, the ISO bakes the placeholder users
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from [`iso-config.toml`](iso-config.toml): `parent` (admin/wheel) and `kid`
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(standard), passwords to change on first login.
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The kid's account can be renamed post-install (see OPERATIONS.md) — the
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Big Picture autostart follows `CONSOLE_KID_USER` in `/etc/bc250-console.conf`.
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> ⚠️ The installer wipes the first disk with no prompts. Don't boot it on a
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> machine whose disk you care about.
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## Documentation
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- [`BUILD-CONSOLE.md`](BUILD-CONSOLE.md) — build the image, generate the ISO,
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publish OTA updates (verified podman and docker paths, with workarounds)
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- [`OPERATIONS.md`](OPERATIONS.md) — day-2 admin: connecting, installing
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games remotely, updates/rollback, GPU tuning, health checks
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- [`WIRING.md`](WIRING.md) — PSU/mains wiring, J1000 pinout, power-switch
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design (AC rocker + AUTO_PWRON), fans, first power-on
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- [`BIOS-FLASH.md`](BIOS-FLASH.md) — backup + flash the modded firmware via
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the J4004 header, then the VRAM/IOMMU settings (ROMs are local-only, not
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in this repo)
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## Hardware prerequisites (on the board, not in the image)
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Modded BIOS (see [mothenjoyer69/bc250-documentation](https://github.com/mothenjoyer69/bc250-documentation)),
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then BIOS settings: 512 MB dynamic VRAM, IOMMU disabled, auto power-on.
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## Known issues (found the hard way on real hardware)
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All of these are worked around in this image; listed here for searchability
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and until fixed upstream.
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- **GNOME Remote Desktop (RDP/VNC) crashes the whole session** on this GPU:
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`gnome-shell` SIGSEGV in `meta_cursor_renderer_get_cursor` via
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`meta_screen_cast_monitor_stream_src_set_cursor_metadata` (mutter 50.3,
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cyan-skillfish/GFX1013) the moment a client connects and requests
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cursor-metadata frames. `MUTTER_DEBUG_DISABLE_HW_CURSORS=1` does **not**
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help. *Workaround: Sunshine + Moonlight instead (baked). Upstream report
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to GNOME/mutter: pending.*
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- **Sunshine crash-loops (SIGSEGV, exit 139) probing the Vulkan H.264
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encoder** on a GPU with no video-encode hardware, instead of falling
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through to the next encoder. *Workaround: `encoder = software` seeded
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before first start (baked). Upstream report to LizardByte: pending.*
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- **GeForce NOW's native Linux app cannot run** — error `0xC0F11312`: the
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client hard-requires Vulkan video-decode extensions and the BC-250's
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silicon has no VCN block at all. Unfixable at the driver level.
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*Workaround: GFN via Chromium web app (baked shortcut).*
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- **BlueBuild `default-flatpaks@v1` `notify: true` breaks on multi-user
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systems**: the post-install notification runs `sudo -u` with all human
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users newline-joined into one name, failing the whole install service.
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*Workaround: `notify: false`. Upstream report: pending.*
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- **Bazzite's `bazzite-steam-bpm` shows "ERROR: code=0; This is
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strange..."** at login when Steam lingers from a previous session: a
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`waitpid` race on already-gone PIDs plus an `if !` clobbering `$?`.
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*Workaround: this image ships its own quit-and-wait wrapper.*
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- Cosmetic: `amdgpu` logs a wall of `hpd(rx)`/`dal_irq` errors at every
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boot on BC-250 — the display core probes IRQ sources this cut-down chip
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lacks. Harmless; every BC-250 does this.
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## Roadmap / hoped-for work
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- File the four upstream bug reports above (coredumps and stack traces are
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in hand).
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- In-home game streaming: Sunshine host VM (R730, RTX 3050 passthrough)
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serving the baked Moonlight client — self-hosted "GeForce NOW" at LAN
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latency. Fortnite stays on real GFN (Epic's anti-cheat policy).
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- Thermal soak validation and GPU governor ceiling tuning (see
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OPERATIONS.md) once long gaming sessions accumulate.
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- Retry GNOME RDP after a fixed mutter ships; retry native GFN if NVIDIA
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adds a software-decode fallback.
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- Explicit non-goal: the experimental 40-CU unlock — this console stays on
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the stable 24-CU configuration.
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## Credits
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Forked from
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[62fixolab/Latest-Bazzite-AMD-BC-250-Patched-Images](https://github.com/62fixolab/Latest-Bazzite-AMD-BC-250-Patched-Images),
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which builds on [vietsman's patched images](https://github.com/vietsman/bazzite-gnome-patched)
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and [filippor/cyan-skillfish-governor](https://github.com/filippor/cyan-skillfish-governor),
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on top of [ublue-os/bazzite](https://github.com/ublue-os/bazzite).
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The 40-CU experimental tooling from upstream is intentionally not included —
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this image stays on the stable 24-CU configuration.
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MIT licensed — see [LICENSE](LICENSE) and [NOTICE](NOTICE).
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