Unable to blank Bluray discs

On Trusty, I was unable to blank a Sony 2X BD-RE Bluray disc with a HP BH40N Bluray disc rewriter/ Burner

Steps:
1. Open Brasero, select tool -> blank
2. Click the "Blank" button to wipe the disc
You will see the progress bar running, and status changing from
Blanking -> Ejecting Medium -> Success

A prompt dialog will pop-up, saying that the disc was successfully blanked.
But it's not.

I got the same result when trying to blank it with the following command:
brasero --blank=/dev/sr0 (with the volume unmounted)

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: brasero 3.10.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Jul 7 05:53:16 2014
InstallationDate: Installed on 2014-07-04 (3 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: brasero
UpgradeStatus: No upgrade log present (probably fresh install)