I have the same error occurring when trying to decrypt a removable USB drive. Though the same machine is running on a LUKS+LVM encrypted system disk without having any issues at all.
The actual error is: Unable to access "64 GB Encrypted" Error unlocking /dev/sdb1: The function 'bd_crypto_luks_open_blob' called, but not implemented I have also confirmed that the USB drive in question is able to be unencrypted and read successfully on my 16.04 machine. Current setup info: ./+o+- glyndavies@riss yyyyy- -yyyyyy+ OS: Ubuntu 18.04 bionic ://+//////-yyyyyyo Kernel: x86_64 Linux 4.15.0-15-generic .++ .:/++++++/-.+sss/` Uptime: 12m .:++o: /++++++++/:--:/- Packages: 1941 o:+o+:++.`..```.-/oo+++++/ Shell: bash 4.4.19 .:+o:+o/. `+sssoo+/ Resolution: 3840x2520 .++/+:+oo+o:` /sssooo. DE: Budgie /+++//+:`oo+o /::--:. WM: BudgieWM \+/+o+++`o++o ++////. WM Theme: Adapta .++.o+++oo+:` /dddhhh. GTK Theme: Adapta [GTK2/3] .+.o+oo:. `oddhhhh+ Icon Theme: Papirus-Adapta \+.++o+o``-````.:ohdhhhhh+ Font: Noto Sans UI 11 `:o+++ `ohhhhhhhhyo++os: CPU: Intel Core i7-5600U @ 4x 3.2GHz [77.0°C] .o:`.syhhhhhhh/.oo++o` GPU: intel /osyyyyyyo++ooo+++/ RAM: 1978MiB / 7661MiB ````` +oo+++o\: `oo++. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to udisks2 in Ubuntu. https://bugs.launchpad.net/bugs/1762307 Title: Cannot access enctypted volume Status in udisks2 package in Ubuntu: New Bug description: At the screen preparing to install Kubuntu, I selected the button "Guided - use entire disk and set up encrypted LVM". System has two hard drives, sda with both Mint 18.3 and Bionic 18.04; sdb with Bionic 18.04. The installer graphic showed it would use all of sda for Kubuntu. In Dolphin, trying to access the encrypted volume on sda returns: An error occurred while accessing '58.9 GiB Encrypted Drive', the system responded: The requested operation has failed: Error unlocking /dev/sda5: The function 'bd_crypto_luks_open_blob' called, but not implemented! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/udisks2/+bug/1762307/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp