I am using a Lenovo Ideapad laptop with graphics card configuration as Radeon HD 8570A/8570M on Ubuntu 14.04. It shows me "The System is running in low graphics mode" while booting. So i am following this answer to solve my error.
I have tried
amd-catalyst 14.4 and
13.12 from this site. But while installing these drivers, my terminal goes like this:
When I click or close the message box, the installation stops. So how do i install the appropriate driver?