I can confirm what Sebastien proposed. Installing libblockdev-crypto2 and restarting the udisks2.service did the trick. Also it maybe worth mention that in my case the installation of Ubuntu 18.04(beta2) performed with the new "minimal installation" option.
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-disk-utility in Ubuntu. https://bugs.launchpad.net/bugs/1761995 Title: Error Formatting luks device To manage notifications about this bug go to: https://bugs.launchpad.net/udisks/+bug/1761995/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
