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Verification checklist — marklife ​

Hardware verification runs through the harness app. It pairs a chassis, prints a diagnostic sized to the media you pick, and submits a hardware report — no CLI transcription.

Browser harness ​

Open https://thermal-label.github.io/harness/marklife/ in a Chromium-class browser, pick a transport, select your printer, and follow the prompts.

  • BLE reaches every chassis in the catalogue. The advertised name is the printer's Bluetooth name plus _BLE; if it matches nothing in the registry the harness asks which entry to use.
  • USB reaches the P12 and P15.
  • Serial reaches anything paired over Bluetooth SPP; you pick the entry yourself. Pairing PIN 1234 on the P12 / P15, none on the S2; on Linux bind the RFCOMM port first (see the Node guide).

Fallback ​

Hand-rolled report? Open an issue at https://github.com/thermal-label/marklife/issues with the model, the registry key, the transport, the media loaded, and what the printer did.

Driver-specific notes for the verifier ​

  • Only three units have printed: the P12 and P15 (USB, SPP, BLE) and the S2 (SPP, BLE). Everything marked expected is inferred from those and has not been driven; a failure there is the report we want, not a driver you are using wrong.
  • marklife-yxq varies per protocol id. The S2 confirms id 2 only. A P50 (id 3), D210 (id 5), X2 (ids 8 / 9) or S8 (id 1) print exercises a job shape nobody has seen work — say which chassis it was, and whether it fed, printed, or did nothing.
  • "Accepted the job, printed nothing" is this family's signature failure, and it has five known causes: a wrong command prefix, no page advance, a deflate window larger than 1 KiB, packets over the chassis' ceiling, and unpaced writes. The driver handles all five on the S2; on another chassis, note whether the media moved at all.
  • Media is not detected. Pick the roll that is actually loaded; the diagnostic is sized from your choice and the chassis cannot correct you.
  • Head width is a guess on most entries. A diagnostic that prints clipped or with a blank margin on one side is telling you the headDots value — measure the printed width and report it.
  • Status pills report link state only; "ready" means connected, nothing more.