I tried with the system's parameters (screen display) but I get only one choice, that is 1440X900 no other possibilities

Here is the startup error:
(Fatal server error
Server is already active display 0
If ths server is no loger active, remove /temp/.x0lock and start again.

---------- Post added 10-28-12 at 08:13 PM ----------

I also get a server log file, which is quite longer, if you want I can copy it fir you.

If you're the only person using your computer, and it's not letting you start X because of it,
then you should be safe to run:

though I suspect it might be 'tmp' rather than 'temp'...

Thanks,
You'r right it is 'TMP' I tried to remove it but the file was not found.

Whe I do a system's check,
Here what I get :
firewire/remove uninitiated
[COLOR="Red"]graphics/compiz_check FAILED OpenGL vendor string: VMware, Inc. OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 0x301) OpenGL version string: 2.1 Mesa 9.0 Not software rendered: no Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes Compiz supported: no
graphics/display PASSED
graphics/resolution PASSED
graphics/minimum_resolution PASSED
graphics/driver_version FAILED ERROR: No video driver loaded! Possibly in failsafe mode!
graphics/VESA_drivers_not_in_use FAILED
input/keyboard skipped

Have you switched and are now running the system in a virtual machine?
And again, please use code-tags, not fancy colors or anything else to post output of commands.

No, I am running on the same machine

If this is not running in a VMware product then you have seriously messed something up in your configuration.

I migrated from Ubuntu 12.04 to 12.10 never did touch my config. The warning of low graphics mode came when upgrading.

---------- Post added 10-29-12 at 07:15 PM ----------

By the way it was working fine on 12.04

In that case I would recommend a clean re-install of 12.10, something got seriously wrong with that upgrade.

Thanks,
What would be the best way of doing it?

Download an Ubuntu 12.10 ISO-image, burn it to a DVD and boot from it into live-mode. Use the live-node to copy any data you want to keep to an external device.
Then simply start the installer.

thanks very much for your help guys you've been great. I'll let you know the outcome

Hi,
I reloaded Ubuntu 12.10 from scratch and everything is working fine.
Again thanks a lot

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