[Fixed] Problem with ATI graphics card after installing Ubuntu 13.04

Have you installed Ubuntu 13.04 from scratch and the resolution that your screen gives you is a poor 800 × 600, or in the best of cases about 1024 × 768?

In System Settings - Monitors only those resolutions come out and you can't change to any more, as if there were very few video modes?

Have you installed a Private Driver and when you restart you get a black screen?
All this, it is possible that it happens to you as it is my case with a graphics card AMD with 5000/6000/7000 series ati chip.

For these cases, I recommend doing what I put from here as soon as installing Ubuntu 13.04 right from the start; In the event that, after installing a Private Driver, the screen is black, you will have to edit the Grub old fashioned look at this Another item.

Steps to follow

1. You could go to the last step, but first I want you to do some checks: Go to System Configuration - Software and Updates and click on the tab Additional drivers, as seen in the figure:

2. Observe that one of the drivers available in the system is activated (appears in green). It is usually the first because it is the one that is recommended.

3. Now we will see how the card is working, type in a Terminal (search for it through the Dash) the following:

sudo apt-get install mesa-utils #a maybe already installed by default

and later:

sudo apt-get update sudo apt-get upgrade

4. We can now execute some command to see the operation of the card:

glxinfo | grep -i render #has to exit direct rendering: Yes

and graphically:

glxgears #if you see the gears everything is fine

5. Now we are going to install the Grub customizer program, which allows us to manage the Grub configuration graphically (the one we sometimes see when we start the machine to choose the OS we want). We type the following commands in the terminal:

sudo add-apt-repository ppa: danielrichter2007 / grub-customizer sudo apt-get update sudo apt-get install grub-customizer

6. You just have to make the changes indicated in the old post already mentioned (which explains how to modify Grub "manually").