Please don't simply re-open bugs without consulting with the maintainer. In your case, my understanding of cryptsetup is that it creates a devmapper device exposing the *unencrypted* data on the partition. It is quite correct that udev ignores /dev/sda4 - it is an encrypted swap, and udev can do nothing with it.
Instead you should use the UUID of the actual unencrypted devmapper device. What does ls -l /dev/mapper show for you? ** Changed in: udev (Ubuntu) Status: New => Invalid -- udev fails to identify crypt_LUKS swap partition by uuid https://bugs.launchpad.net/bugs/362315 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs