It looks like you don't have a separate /boot partition being created? All Ubuntu flavors use Canonical's build of GRUB (naturally), and Canonical explicitly **does not support /boot being located on an encrypted partition.** It actually creates additional security risks to do so as Canonical doesn't test the code that handles encrypted /boot.
Most likely what broke this is we changed from LUKS1 to LUKS2 in Lubuntu to increase security. I do not believe GRUB supports LUKS2. As encrypted /boot is not supported, and as there are security concerns when using LUKS1, I don't think we probably should fall back to LUKS1. If you're *really* determined to install with /boot on an encrypted partition despite the fact that this is dangerous, try running `sudo nano /etc/calamares/modules/partition.conf`, and change `luksGeneration: luks2` to `luksGeneration: luks1`. Then try installing with one big encrypted partition again. Again, **this is dangerous**, and also it has a good chance of breaking if you use a keyboard layout other than US. Hope this is helpful! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2064909 Title: Lubuntu and Kubuntu 24.04 fail to decrypt on boot when installed on encrypted partition To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calamares/+bug/2064909/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
