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A dark, steampunk, gaming-focused Linux distribution that turns the AMD BC-250 compute board into a daily-drivable desktop and games console — tuned and ready out of the box.

skillfishos.com · Based on Debian sid · KDE Plasma 6 · GPL-3.0 · Release 26.06.5 "Aetherium"

SkillFishOS takes the cheap, abundant AMD BC-250 — a semi-custom APU from the AMD Zen 2 + RDNA 2 family (CPU Oberon, GPU Cyan Skillfish / GFX1013, 16 GB GDDR6) — and makes it a proper Linux machine: a steampunk KDE Plasma desktop on one side, a Steam / EmuDeck console on the other, with every awkward piece of hardware tamed and tuned for you.

The whole point: a ready-to-use system, no tinkering required. Every governor, kernel patch, overclock profile, thermal guard and driver workaround is already configured and tested.

Hardware target

Board	AMD BC-250 (Cyan Skillfish, GFX1013)
CPU	AMD Zen 2 (Oberon), 6 cores as shipped — 8 cores / 16 threads unlocked by SkillFishOS, OC up to 4.0 GHz validated
GPU	RDNA 2, 24 CUs default → 40 CUs unlockable (~11,330 GFLOPS fp32)
Memory	16 GB GDDR6 (shared / UMA)
Base distro	Debian sid, KDE Plasma 6 (Wayland)

The BC-250 is fantastic value but a difficult target: non-standard SMU clock control, a broken display IRQ/HPD path, unreliable RDSEED, locked-down compute units, no IOMMU and BIOS/ACPI gaps. SkillFishOS papers over all of it.

Start here

• Installation — editions, download, installer, first boot
• Kernel — the custom linux-tkg 7.2.6, two flavours
• SkillFishOS Control Center — Status, Tuner, Fan, Monitor, Games, Profiles, Kernel, Snapshots, AI, Emulators, Console, ISO, one window
• SkillFishOS Hub — the Discover-style software centre (APT + Flatpak + Snap)
• APT Repository — the signed aetherium repo & how updates work

Tuning & hardware

• GPU Governor and Tuning — the V/F curve, the ceiling, the three presets. Read this before pushing clocks.
• CPU Overclock and Undervolt
• Compute Units (40-CU)
• Memory VRAM and GTT

Using it

• Benchmarks — real numbers (Wukong, Heaven, Superposition)
• Gaming and Emulation
• On-device AI
• Apps — the full native app suite
• Troubleshooting

For developers

• Building from Source — kernel, ISOs, apps
• Contributing

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This is a community open-source project and we want it to grow. Contributions of every kind are welcome.