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This post is a reminder about rabbit holes one goes down when working on technical problems. Some time ago, I received an Inforce IFC6410 to add to my testing while I modernize the thermal sensor driver found on many Qualcomm platforms. This is a fairly old Snapdragon 600 SoC and isn't being tested in any of the kernelci.org labs leading to a patch recently getting merged that broke the thermal sensor on the board. I figured I'd wire it up to my board automation setup - a glorified mess of an ATX PSU, a switchable USB hub and an 8-port relay - that automates the toggling of power and vbus to a board to allow for automated kernel flashing and testing. HW Lab automation - work in progress So I wired up the IFC6410, connected a USB-serial cable for console and added the requisite port numbers to my scripts to toggle power to the board when I built a kernel to test on that target. Except that the board didn't enter fastboot mode to flash a new kernel. The messa