>it’s very slow to reproduce I had an embedded system that hosted USB endpoints that normally booted in ~3 seconds and could connect to the host in 5-6 seconds

>it’s very slow to reproduce I had an embedded system that hosted USB endpoints that normally booted in ~3 seconds and could connect to the host in 5-6 seconds. We found an issue in environment testing that the unit took longer to connect the colder it got: ~10 seconds at 0C, 20 seconds at -10C, 120 seconds at -20C, and after -30C it could take 15 minutes or just never connect. We had to instrument the whole device and stick it inside of a chamber to debug. Every change meant waiting another 20 minutes for the chamber to cool down. Eventually found a sense line left floating that would eventually float high once it got warm enough. Probably 3-4 weeks of troubleshooting and it ended up being a single device tree edit to configure the pin with a pull-up.