Debugging

Three fixes, three dead ends, and a root cause underneath all of them: no container runtime can give a process its own virtual terminal.

An RTX 5070 Laptop that no NVIDIA driver could initialise, and what it took to prove the bug was in firmware rather than in code anyone can read.

A disk-space guard observed the exact failure condition it was built to catch, twice, and the disk hit zero nine minutes later. Two bugs, two fixes, three hours apart.

Two hosts each carried their own copy of the same backup config, and the same structural mistake in both of them let one backup silently stop running for two days.

nixpkgs' Immich package has no CUDA wiring. Building it from source cost hours and an OOM kill. Fetching the vendor's own wheel cost minutes.

How a two-line bounds check broke Bluetooth on the MT7922 chip, and the journey from dmesg to kernel source to patch.