Your crypttab contains: sda3_crypt UUID=ad243744-ddc3-4839-b492-5ede0ec8aecc none luks,discard
Your fstab does not list sda3_crypt, but it does list your root and home partitions as being on /dev/mapper/lubuntu-vg. Is lubuntu-vg a crypted VG? I.e., is your root partition encrypted - such as you would get if using the Ubuntu installer's "encrypt whole disk" option? This is relevant for understanding where the bug lies, since different code paths are used to prompt for passphrases in the initramfs (root partition) vs. after boot (other partitions). This bug is not reproducible for me here on Ubuntu 16.04. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574317 Title: Prompt to decrypt LVM device is hidden behind (blank) splash screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1574317/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs