Dear Blaire,
I did the steps you told and the reset worked fine and I got unity back
Many many thanks.....
Ubuntu forums rock!!! Ubuntu forums thank you very much!!

On Sun, Aug 12, 2012 at 8:50 AM, Blair Chasteen
<email address hidden>wrote:

> try this. follow the same steps to either open a terminal from your
> black screen (ctrl-alt T) or switch to a new console (ctrl-alt F1) then
> type the following to reset compiz
>
> gconftool-2 -recursive-unset /apps/compiz-1
> unity --reset
>
> if that does not work try
>
> cd ~; rm -rf .gnome .gnome2 .gconf .metacity .compiz-1 .config/compiz-1
> .config/dconf
>
> either of those steps should reset compiz to default settings.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/963633
>
> Title:
>   Unity 5.8: Login to blank screen (all black or just wallpaper)
>
> Status in Compiz:
>   Won't Fix
> Status in Compiz Core:
>   Fix Released
> Status in Unity Distro Priority:
>   Fix Released
> Status in “compiz” package in Ubuntu:
>   Fix Released
> Status in “unity” package in Ubuntu:
>   Invalid
> Status in “compiz” source package in Precise:
>   Fix Released
> Status in “unity” source package in Precise:
>   Invalid
>
> Bug description:
>   WORKAROUND/FIX:
>   unity --reset
>
>   TEST CASE:
>   Edit ~/.gconf/apps/compiz-1/general/screen0/options/%gconf.xml and add
> an entry AFTER composite and BEFORE opengl for a dummy plugin name that
> does not exist. Log out and in again.
>
>   ORIGINAL DESCRIPTION:
>   After the update earlier today to Unity 5.8, I've found that when I try
> logging into Unity 3D, all I get is a solid black screen and my mouse
> cursor. I know it loaded some sort of desktop though, since I could still
> hit Ctrl+Alt+T and blindly type `sudo reboot` followed by my password to
> make my computer do a normal reboot.
>
>   I do not get the same problem with GNOME Shell or Unity 2D (the latter
>   of which I'm using now to report this bug), although for both the
>   screen does temporarily turn black but only for a moment. Unity 5.6 3D
>   used to work perfectly fine for me.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 12.04
>   Package: unity 5.8.0-0ubuntu1
>   ProcVersionSignature: Ubuntu 3.2.0-20.32-generic 3.2.12
>   Uname: Linux 3.2.0-20-generic x86_64
>   .tmp.unity.support.test.0:
>
>   ApportVersion: 1.95-0ubuntu1
>   Architecture: amd64
>   CompizPlugins:
> [core,bailer,detection,composite,opengl,compiztoolbox,decor,imgpng,move,vpswitch,mousepoll,resize,snap,wall,grid,place,gnomecompat,regex,session,animation,expo,workarounds,fade,ezoom,scale,unityshell]
>   CompositorRunning: None
>   Date: Fri Mar 23 22:47:44 2012
>   DistUpgraded: Fresh install
>   DistroCodename: precise
>   DistroVariant: ubuntu
>   InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64
> (20111129.1)
>   MachineType: Gigabyte Technology Co., Ltd. M61PME-S2P
>   ProcEnviron:
>    TERM=xterm
>    LANG=en_US.UTF-8
>    SHELL=/bin/bash
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-20-generic
> root=UUID=2d55fd3e-d932-47b9-abd6-a1fde1ec0453 ro quiet splash vt.handoff=7
>   SourcePackage: unity
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 11/03/2009
>   dmi.bios.vendor: Award Software International, Inc.
>   dmi.bios.version: F6
>   dmi.board.name: M61PME-S2P
>   dmi.board.vendor: Gigabyte Technology Co., Ltd.
>   dmi.board.version: x.x
>   dmi.chassis.type: 3
>   dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
>   dmi.modalias:
> dmi:bvnAwardSoftwareInternational,Inc.:bvrF6:bd11/03/2009:svnGigabyteTechnologyCo.,Ltd.:pnM61PME-S2P:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnM61PME-S2P:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
>   dmi.product.name: M61PME-S2P
>   dmi.sys.vendor: Gigabyte Technology Co., Ltd.
>   version.compiz: compiz 1:0.9.7.2-0ubuntu1
>   version.ia32-libs: ia32-libs N/A
>   version.libdrm2: libdrm2 2.4.32-1ubuntu1
>   version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu2
>   version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
>   version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu2
>   version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu7
>   version.xserver-xorg-input-evdev: xserver-xorg-input-evdev
> 1:2.7.0-0ubuntu1
>   version.xserver-xorg-video-ati: xserver-xorg-video-ati
> 1:6.14.99~git20111219.aacbd629-0ubuntu2
>   version.xserver-xorg-video-intel: xserver-xorg-video-intel
> 2:2.17.0-1ubuntu4
>   version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
> 1:0.0.16+git20111201+b5534a1-1build2
>
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>