LiveCD Boot failure

If you boot Ubuntu in Recovery Mode can you successfully reach a terminal?

Please try to press CTRL+ALT+"+" and/or CTRL+ALT+"-" to dynamically change video frequency
or press CTRL+ALT+BKSPACE to restart graphics layer.

Reconfiguring your xserver-xorg may help you.

A) ---- If you can view graphics Gnome desktop

Please open a Terminal from the menu Applications->Accessories->Terminal
and jump to step C

B) ---- If you cannot view graphics Gnome desktop

Please press CTRL+ALT+F2 and make login with your user and password
and go on to step C

C) ----------------------------------------------------------------------

To make a backup copy of your actual /etc/X11/xorg.conf type:

cd /etc/X11
sudo cp xorg.conf xorg.conf.bak

give your user password when requested, you don't see nothing when you type it, then press enter.

Then try to reconfigure your xserver-xorg

sudo dpkg-reconfigure xserver-xorg

answer to the simply questions, then restart the pc.

If something goes wrong you can restore the saved copy of your old configuration, open a terminal or login to a virtual terminal by pressing ctrl+alt+F2 and type:

cd /etc/X11
sudo cp xorg.conf.bak xorg.conf

and restart the pc, type:

sudo reboot

Hope this helps

Answer for Pramod Dematagoda -- if I append the boot option acpi=off to the boot command, then I can get to the root in Recovery Mode.

Marcobra, when do I press the CTRL+ALT+"+" during the boot process? Should I do it when the screen is hanging on black?

Thanks,
-Sam

Try when the screen is hanging on black.
Then press CTRL+ALT+F2 to get terminal access and reconfigure your xserver-xorg

Thank you

Marcobra, I followed your instructions, these are the results:

1) the screen flashed to black. I pressed CTRL+ALT+BKSPACE 3 times and was able to then open a terminal and reconfigure my xserver-xorg. I rebooted. I now have a screen that reads:

2)
* starting Common Unix Printing System: cupsd [OK]
FATAL: Error inserting battery (/lib/modules/2.6.22-14-generic/kernel/drivers/acpi/battery.ko): No Such device
* starting powernowd...
/etc/rc2.d/S20powernowd: 156: cannot create /sys/devices/system/cpu/cpu0//cpufreq/scaling_governor: Directory nonexistent
* CPU frequency scaling not supported [OK]

3) it is hanging on this line:
* Running local boot scripts (/etc/rc.local) [OK]

I can get to a terminal after this point if I want to.

Thanks,
-Sam

Going to terminal
Please try to configure your xserver-xorg by selecting a vesa or vga video card and try to boot.

You may also try:-

sudo dpkg-reconfigure -phigh xserver-xorg

The above code reconfigures the X-Server to it's defaults, but if that code does not work, then some other methods would have to be looked into.

I tried all of the above -- none of it seems to be helping. The screen still hangs on black during start up.

xserver autodetects my videocards fine. could it be a problem with my monitor?

why do you believe this is a problem with my display settings?

Thanks for all of your help.

Try and install the Nvidia driver manually,

1) Download the driver:-

wget http://us.download.nvidia.com/XFree86/Linux-x86/169.07/NVIDIA-Linux-x86-169.07-pkg1.run

2) Execute the installer using:-

sudo sh NVIDIA-Linux-x86-169.07-pkg1.run

3) After the installation is done, configure the xserver using:-

sudo dpkg-reconfigure xserver-xorg

4) Reboot the system using:-

sudo reboot