Chosen Solution
My MacBook Air Early 2020 recently had a issue while running the macOS Ventura Beta, the keyboard and trackpad suddenly stopped working and the system refused to boot (it would just stay on the apple logo while the fans ramped up in the background.) but if I left it on for around 30 min. the login screen would appear but trackpad and keyboard still didn’t work. I thought the T2 chip was the culprit because the T2 Chip controls the keyboard and mouse. So I restored it with Apple Configurator 2. But the restore would constantly fail. It would always failed at the end. looking though the logs the error code was ipd_update_failed -3 which makes me think that the keyboard and mouse are the culprit. Can anyone help me out? There’s not results for the error code on google.
This actually sounds like your theory could be correct. That the Keyboard and trackpad have something to do with it. Especially with the “IPD” failed since the IPD cable goes to trackpad and keyboard. I have never seen this specific error before, and I also could not find anything about it, could be a T2 issue, could just be something with the IPD cable, although that seems weird, but either way. Have you opened the machine up at all to have a look inside?