I have installed ubuntu 12.04 along with windows vista as dual boot.It was working fine. But ubuntu was having some issue with the mousepad. So I installed and removed some pakages unknowing what they do. And now while booting ubuntu, I am getting an error "Could not write bytes:broken pipe" and it does nothing after showing this message. I tried may things like upgrading grub, lightdm restart etc. But still the same error.
Can someone help me on this? I am stuck.