Crash at/or before splash screen

[Thierry]

Description: Ubuntu 15.04
Release: 15.04
Kernel: 3.19.0-30-generic

Freeze at splash screen (Plymouth ?) or before splash screen (Kernel ?) (links with bug 1430625 ?)

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: plymouth 0.9.0-0ubuntu9
ProcVersionSignature: Ubuntu 3.19.0-30.33-generic 3.19.8-ckt6
Uname: Linux 3.19.0-30-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.17.2-0ubuntu1.5
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Oct 1 21:29:19 2015
DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
InstallationDate: Installed on 2014-10-26 (340 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
Lsusb:
 Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 003: ID 0bda:5801 Realtek Semiconductor Corp.
 Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Hewlett-Packard HP G62 Notebook PC
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic root=UUID=e9652072-0d12-4185-8432-cd77ba15c54f ro quiet splash vt.handoff=7
ProcFB:
 0 inteldrmfb
 1 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic root=UUID=e9652072-0d12-4185-8432-cd77ba15c54f ro quiet splash vt.handoff=7
SourcePackage: plymouth
TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
UpgradeStatus: Upgraded to vivid on 2015-05-24 (130 days ago)
dmi.bios.date: 06/14/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.0A
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 143A
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 60.21
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.0A:bd06/14/2010:svnHewlett-Packard:pnHPG62NotebookPC:pvr0497100000252710001020000:rvnHewlett-Packard:rn143A:rvr60.21:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: HP G62 Notebook PC
dmi.product.version: 0497100000252710001020000
dmi.sys.vendor: Hewlett-Packard