Stuck at splash screen

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http://askubuntu.com – My laptop is lenovo g580 running on core i5 with geforce 630 M as discrete graphics , I have noticed that my graphics card is cosuming a lot of power and then turned it off using sudo gedit /etc/rc.local and then adding echo IGD > /sys/kernel/debug/vgaswitcheroo/switch echo OFF > /sys/kernel/debug/vgaswitcheroo/switch before exit0 Now a new problem has come up the splash screen gets stuck when I turned of quiet splash I noticed it was always fails at the task. Starting reload cpus upon starting avahi daemon to make sure remote queues are populated and stops at starting ne (HowTos)