POWER-FINAL-14 — 13 plus persistent sleep and USB diagnostics

Status: IMPLEMENTATION_READY_PHYSICAL_NOT_RUN (sealed, awaiting the owner flash). Package out/y2linux-platform-v1-power-final-candidate-14/ (fallback = sealed 13), symbols …-14-symbols/, receipts out/deep-sleep-final/build14-receipts/, branch power-final-14. Identity: Linux 9d06ac4deb158183f56f845086aaa307ce836177; Reborn 63ac4a75286944ac0c57a2f15bb3b841923dd0f3 (code identical to 71ddb0d). BOOTIMG 273dc927fbdb5778089ad76179ae92f8a32cb7625a83b39cc0850b572d7d3e5a, Y2ROOT 78203697a71be7669c9e6f88dedc3a6daa80cd8ff6876d35779e86bb6ba314b9. Fallback = sealed 13.

Change

• sleep_diagnostics.py (new): bounded private /data/system/platform/sleep-diagnostics.jsonl (2 × 2 MiB, 64 KiB per

  row, fsync). Rows at kernel_suspend, kernel_resumed (with golden), restoring_radios, complete_result_* and product_failure. A row holds vproc_sleep/vproc_sleep_state, lp_sel, phy_savecurrent, wheel sleep, y2_infra/state, SPM state, the USB/network snapshot and a filtered /dev/kmsg tail (USB, gadget, sleep path; at most 80 lines). There is also a row on a UDC state change and one 30 s later, at most one row per 10 s.

• power_journal.py: every row gains usb_net (UDC state, configfs UDC, usb0 operstate/carrier/IPv4 from

  /proc/net/fib_trie, interface counters, y2-usb status summary, OUT-path counters, umtprd/dropbear running). Shared bounded append helper; per-second USB watch on the existing power sample.

• suspend_record.py: calls the diagnostics on the stages above; refusals write nothing.
• Identity bump; scope audit: POWER-FINAL-14 entry in docs/planning/roadmap-gap-audit.md.
• Read-only sysfs/procfs. A failure is counted, never raised, and never blocks sleep. SSH stays bound to usb0.

Evidence behind the change

Archive 104: 13 slept 12,104 s (7 suspends, 6 maintenance wakes, Power wake, complete_result_0). After the wake, USB enumerated but passed 0 bytes. The hold-Power restart then lost every 13 counter, and the syslog kept only boot start-up. The same USB failure recurred at 20:56 (0 bytes, MTP dead too).

Tests

Locked-container production suite: 8 suites OK, 664 cases, 10 host-dependency skips (13: 651; plus 12 test_sleep_diagnostics cases and the package.py --stock case). The run ended at the same final step as 13's; its exit code was not captured. Packaging-host tests: 32 PASS. Splash: 27 PASS. Package validation, ELF closure (385 files / 1,416 dependency edges), installed-ARM (39 modules), inventory (106 packages) and privacy (1,442 root files, no private state) PASS. Host regression comparison against main: the same 38 host-environment failures, and 524 tests against 512.

Not verified

Everything physical: that the rows are written on the device at each stage, their size and timing on eMMC, and the /dev/kmsg filter on real messages. Defect B is not fixed; 14 only makes it observable.

Verdict

IMPLEMENTATION_READY_PHYSICAL_NOT_RUN