Pinephone not booting, always vibrating

[Scary Guy]

Chiming in because I had the same behavior. I have an older charger that gives out only the required voltage to try to extend the life of the battery. I also have a quickcharge one for another phone which supplies way too much power.

I took it off the dock (which probably also wasn't helping) and plugged it into that. Booted normally without issue and this was even easier than using the JumpDrive method.