I've marked https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2084802 as duplicate of this issue because it is solved the same way and I also edited the title here to make it more generic (don't hesitate to change it further).
The issue in that other bug report has a different setup however. Quoting the reporter internally: > /dev/nvme0n1 with 3 partitions... one of those /dev/nvme0n1p3 is encrypted with LUKS ** Summary changed: - Only single LUKS device unlocked on boot + LUKS not detected or prompted for on boot -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2084251 Title: LUKS not detected or prompted for on boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/2084251/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs