I am using Windows 7 Home basic and Ubuntu 12.04 on my SONY laptop, Ubuntu is default boot OS, today upgraded to 12.10, after this not able to boot latest version of Ubuntu and previous versions also. After installation, it asked me to restart, after rebooting it is showing only black screen. Windows is working fine.
Using recovery mode option entered into console mode and try entered into GUI by pressing Alt+Function 7 , this it asking me to run landscape-config. Even after running the landscape-config the is no use. Can any one help me in this.