Using arch linux, I have had my kernel upgraded from 6.3.9 to 6.4.1. After regenerating the UKI, that works, I get just a black screen when systemd-cryptsetup should be either using the TPM to unlock the drive or to ask me the rescue password.

Luckily I have an old UKI with 6.3.9 (also the correspondent /lib/modules) so that I can boot with the old one, but the question is: any idea on how to debug this issue? I had the same problem previously, which I could trace back to the upgrade of linux-firmware and that got fixed two days later when the same package got updated, but now I have checked and there's been no update about that.

Is there any way to set systemd in verbose mode, so that I get more information before the black screen?

Thank you,

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