qbuissondebon/cmp170hx_check
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Add opt-in cmpunlocker unlock step with post-unlock Gen2 x16 acceptance

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Insert a "cmpunlocker unlock (install)" step after unlock verification:
y/N confirmation (default n) or --unlock runs install.sh from the
harness clone (main branch, ff-only pull first) with live terminal
output and full log to cards/<serial>/install_unlocker.log. On success
the Vulkan stress is skipped until after the cold reboot.

Score now enforces the post-unlock invariant: when verify reports
unlocked-ok, any final link other than Gen2 x16 fails with a red
[ERROR] and exit 1. README safety section and AGENTS.md harness
cloning invariant updated to match.
This commit is contained in:
qbuissondebon
2026-09-28 15:39:10 +02:00
parent a84aa494d0
commit 7f3cfcf058
4 changed files with 220 additions and 27 deletions
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AGENTS.md
+2 -2
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@@ -7,7 +7,7 @@ This repository checks one NVIDIA CMP 170HX at a time on a fresh Ubuntu 26.04 x8
## Source and outputs
- `check_cards.py` owns the CLI, per-card flow, report scoring, and terminal result.
- `cxlib.py` owns host setup, pinned cmpunlocker download, card identity, subprocess logging, PCIe inspection, and optional VBIOS backup.
- `cxlib.py` owns host setup, the cmpunlocker harness clone/update and opt-in installer, card identity, subprocess logging, PCIe inspection, and optional VBIOS backup.
- `README.md` is the operator guide. Keep its flags, output paths, reboot steps, and exit codes aligned with the code.
- `harness/`, `cards/`, and `unidentified/` contain generated source, logs, reports, or firmware backups. Do not commit their contents.
- The bundled `nvflash_5.867_linux/` contains the optional backup tool. Backups belong under `extras/`, not at repository root.
@@ -19,7 +19,7 @@ This repository checks one NVIDIA CMP 170HX at a time on a fresh Ubuntu 26.04 x8
- Measure capacitor-related lane width before unlocking. The width result is independent of cmpunlocker: Gen1 x16 passes the width check, while x4 fails it. Do not claim the capacitor is physically verified; the width is an observed link result on the current host.
- Keep the final PCIe acceptance check after unlock. Preserve a red `[ERROR]` message and failing exit for any final link other than Gen2 x16. Gen1 x16 passes the earlier width check but fails the final card check.
- Preserve cold-boot state by card identity. GPU UUID may be used internally for this purpose, but not as a folder name.
- The cmpunlocker archive is pinned by commit and SHA256 in `cxlib.py`. Check a pinned version's actual accepted installer flags before changing invocation. The currently pinned v0.3 installer does not accept `--no-passthrough`.
- The cmpunlocker harness is cloned from upstream **main** into `harness/cmpunlocker/`, and `git pull --ff-only` runs before every install (a failed pull warns and continues with the existing checkout). Invoke `install.sh` only with flags the checked-out version actually accepts — currently **no flags**; never pass `--no-passthrough` to older checkouts without verifying them first.
- VBIOS backup is optional and read-only. Select the detected PCI address for nvflash and sysfs ROM operations. Never add a flashing step to the normal workflow.
## Working in this repository