I am using HP ProBook 4520s and have ATI Mobility Radeon whose graphics card doesn't support Ubuntu. Infact, it produces more heat and consumes a lot of battery which causes system usually hangs.
I read somewhere that disabling my discrete graphics card can solve problem. I am not a gamer but a web application developer, hence I think those HD graphics are not neccessary for me. Integrated graphics will be enough for me.
I tried disabling it from BIOS but didn't see any option there to disable it. So can someone please help me to disable discrete graphics card either from BIOS or Ubuntu? It will help my system running smoothly!