Even in 2019 and Ubuntu 18.10 fully updated, I'm getting the exact same error (on gnome-disks and nautilus)
> "Error unlocking /dev/sdb3: Failed to activate device: Operation not permitted (udisks-error-quark, 0)".
The package libblockdev-crypto2 was already installed and installing libblockdev-crypto-dev (and rebooting) didn't help.
Using udisksctl didn't help either: > udisksctl unlock -b /dev/sdb3 > Passphrase: > Error unlocking /dev/sdb3: GDBus.Error:org.freedesktop.UDisks2.Error.Failed: Error unlocking > /dev/sdb3: Failed to activate device: Operation not permitted
Even in 2019 and Ubuntu 18.10 fully updated, I'm getting the exact same error (on gnome-disks and nautilus)
> "Error unlocking /dev/sdb3: Failed to activate device: Operation not permitted (udisks- error-quark, 0)".
The package libblockdev-crypto2 was already installed and installing libblockdev- crypto- dev (and rebooting) didn't help.
Using udisksctl didn't help either: org.freedesktop .UDisks2. Error.Failed: Error unlocking
> udisksctl unlock -b /dev/sdb3
> Passphrase:
> Error unlocking /dev/sdb3: GDBus.Error:
> /dev/sdb3: Failed to activate device: Operation not permitted