I suspect this issue could be the result in changes in the behaviour of cryptsetup since the upgrade.
Instead of trying to read the key-material from stdin, you could try "crypsetup --key-file /mnt/usb/keys/fs". The failure to mount could simply be a sign that the filesystem hadn't been decrypted properly, and not anything to do with ext4. To confirm, you could take a look at /dev/mapper/crypto (e.g. with "od"), before trying to mount it. I don't think this bug is relevant to cryptmount (unless priya has some evidence to the contrary.) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/596299 Title: Decrypted partition won't mount (ext4) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cryptmount/+bug/596299/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
