For help, restart the black screen after the ati driver is installed

For help, restart the black screen after the atigraphics card driver is installed-Linux general technology-Linux technology and application information. The following is a detailed description. Big Brother, younger brother is a beginner.
My computer is a graphics card of ATI HD5650. After I installed an official driver on UBUNTU, I restarted the black screen, which means the screen was black and I could hear the sound of the system, I found a lot of methods on the Internet and failed to find them. Many of them are prompting you. Can you tell me more about new users like me? The restart on the attached driver is also a black screen.


A few days ago, I posted the same post on the ubuntu Forum. After several days, no one answered the question. Alas, it's really sad. No one can solve this big jar problem? Or are people too cold? With my information about the red union community, I went to the Red Union community to learn about Linux. Please take care of it.