I disabled my AMD Radeon 7730M HD graphics using: http://planetoss.com/articles/how-to-disable-the-discrete-amd-graphics-card-in-linux/ because it was causing a lot of heat. Now I have gained around 60-70 mins of battery.
But the problem now is, it shows that your system is running in low graphics mode at the start up and asks for manually configuring the display, graphics, etc.
I also Googled my problem but they only said why is it happening but never gave a solution for this problem.
Only the terminal in full screen is accessible. I have to login and reboot the system many times and once in 3-5 trials, I get the graphic login and it starts working again.
Can somebody please help me with this? I really love Ubuntu and don't want to remove it.
This is the only problem I face but it's quite annoying...