Take the 2-minute tour ×  I've been experiencing many problem
lately since I fresh installed Ubuntu 12.04 LTS on my SONY VAIO
VPCEH with Windows 7 previously installed.  Sometimes when I try
to boot Ubuntu, it gets stuck at loading screen. There seems to
be some problem with driver (as far I can judge).  Following is
the log generated, when I press Esc during the boot (before the
problem occurs):  * Stopping System V initialization
compatibility        [ok] * Starting System V runlevel
compatibility              [ok] * Starting crash report
submission daemon               [ok] * Starting automatic crash
report generation            [ok] * Starting LightDM Display
Manager                      [ok]  Nothing works after that, no
Esc, etc, except restart.  Also I've observed the following:
• Inactivity of Hard-drive (Led doesn't glows).   • Flashing, or
blinking, of Caps-lock and Scroll-lock  On restart, Ubuntu seem
to load successfully. However, the loading screen has somewhat
basic graphics.  This problem st