In my laptop Lenovo G770 there is a build in onchip graphics card and an AMD Radeon 6650M 2 GB graphics card.
I have installed Ubuntu 18.04 LTS 64bit
doing lspci gives me following graphics cards
VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Whistler [Radeon HD 6630M/6650M/6750M/7670M/7690M]
I have visited the amd drivers section,
The drivers there are listed for Ubuntu 14.04, I can not find any drivers for Ubuntu 18,04 LTS
So I tried to install the drivers meant for Ubuntu 14.04 on the my system, I ensured dependencies were met.
The catalyst control center appeared in the menu but it cashes when I run the application.
I have attached the terminal output when I installed the drivers and also attached the crash file.