On Mon, Jul 23, 2018 at 2:50 AM, Peter Robinson <pbrobinson@gmail.com> wrote:

On Mon, Jul 23, 2018 at 4:44 AM, Eric Smith <spacewar@gmail.com> wrote:
> I'm trying to use Fedora 28 Minimal on a Raspberry Pi 3 to set up an NTP
> server using a GPS hat, specifically intended for this purpose:
>

Yes, so it seems like the GPS is probably trying to send data which is
in turn interrupting the boot process.

I had the same problem (except I was using the Adafruit version), and my only solution at the time was to switch back to Raspbian. The GPS starts sending data over the UART as soon as it is powered up so there's really no chance for the user to do anything. Barring some sort of hardware/software changes on the GPS HAT that would prevent it from sending data over the UART until it got a signal from the Pi I think that U-Boot will need to be changed so that it ignores the UART.

Jeff Ollie
The majestik møøse is one of the mäni interesting furry animals in Sweden.