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hubris: note physical relocation 2026-04-29 + post-move thermal baseline

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Claudio
2026-04-29 23:15:13 +02:00
parent 7454b5f110
commit df4b2ec189
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investigations/2026-04-21-hubris-crash-loop.md
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@@ -41,6 +41,9 @@ Resolved (3 h self-paced watch). Steady-state across 17:03 → 19:56 stayed pinn
### 2026-04-28 — A/B test passing so far
3+ days continuous uptime with the drive removed. If uptime now exceeds ~3 days without crash, the drive/PCIe-tunnel interaction is confirmed as the dominant root cause. Will revisit options (different drive, different USB port, different bridge) once stability is firmly established.
### 2026-04-29 — physical relocation
User moved the host to a spot with better airflow. Post-move idle baseline (45 min uptime, light load): Tctl **47.2 °C**, GPU 42 °C, nvme0 composite 34.9 °C / sensor1 32.9 °C, nvme1 composite 38.9 °C / sensor1 52.9 °C, DRAM 34–35.5 °C. Notably nvme0 sensor1 is **27 °C cooler** than the 2026-04-23 thermal-pad steady-state of 60–61 °C. Watch lifetime warning-time counters (`nvme smart-log` → "Warning Comp. Temperature Time") over the next week — flat trend confirms the move helped. Doesn't change the drive-removal A/B test, but reduces residual thermal headroom risk independently.
## Root cause
Two-contributor: