Should not select NVIDIA (Performance mode)

Description: Ubuntu Vivid Vervet (development branch)
Release: 15.04

nvidia-settings:
  Installato: 346.59-0ubuntu1
  Candidato: 346.59-0ubuntu1
  Tabella versione:
 *** 346.59-0ubuntu1 0
        500 http://it.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages
        100 /var/lib/dpkg/status

I should not select NVIDIA (performance mode) instead of Intel (power saving mode)!
It open an empty window with the symbol of error and stop.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: nvidia-settings 346.59-0ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-12.12-generic 3.19.3
Uname: Linux 3.19.0-12-generic x86_64
ApportVersion: 2.17-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Apr 12 11:28:25 2015
ExecutablePath: /usr/bin/nvidia-settings
InstallationDate: Installed on 2015-04-09 (2 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: nvidia-settings
UpgradeStatus: Upgraded to vivid on 2015-04-10 (2 days ago)