[arch-general] Encryption passphrase has to be entered twice

[Karol Babioch]

Hi,

I've recently installed Arch on a friend's machine, which happens to be
a MacBook Pro. After some initial problems with the EFI setup, it now
works basically great.

However there is a strange "problem" during the boot process. The system
is fully encrypted (based on the layout recommended in the Wiki), so
during the boot process you'll get asked for the passphrase.

However the correct passphrase isn't recognized the first time, but it
has to be entered a second time. The passphrase is pretty easy for now,
just to make sure mistyping is not a problem. We tested this several
times, and it consequently refuses to accept the passphrase given at the
first attempt.

I've had to include the "usbinput" hook into the initramfs as the
keyboard is attached via USB. However I can't think that this is a
problem, as I've used the "usbinput" hook on other machines without a
problem.

Has anyone experienced something like this already? What might be the
problem here? How can I debug this? I thought of rewriting the "encrypt"
hook to output the entered passphrase, but before fiddling around with
it, maybe there is something obvious I've missed here?

Best regards,
Karol Babioch

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