Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

This question already has an answer here:

I have an AMD Raedon 6770 graphics card in my computer, and for some reason I'm unable to get Ubuntu 13.10 to read it. I had another copy of 13.10 on my desktop, but when I tried to install the .run file for the card from the terminal, it corrupted something within my operating system and I could no longer get Ubuntu to boot. I'm fairly new to this operating system, but am beginning to grasp the concept pretty fast. Is there anyway to add a library of screen resolutions? I really need something with a 16:9 ratio for my Emerson TV screen which I'm using as my monitor, and currently only 4:3 is available (linked tv to computer through a monitor cable).

I've also tried to run a few xrandr commands without any success. Any suggestions would be greatly appreciated!

share|improve this question

marked as duplicate by BuZZ-dEE, Eric Carvalho, Maythux, Avinash Raj, Alvar Mar 13 '14 at 20:59

This question was marked as an exact duplicate of an existing question.

If I understand correctly, you don't have a black screen, but rather are having trouble setting up the correct resolutions? If that's the case, then you should be able to follow this guide.

share|improve this answer
I tried this again and actually got to the install screen this time. It installed but said there were errors, so I rebooted it and not I'm unable to get Ubuntu to display again. Says I have a resolution mismatch. And of course theres no way to get into it and change it back (that I know of) unless I can get to the home screen. I unplugged my monitor cable and started using HDMI, and now I can see the start up screen, but once I type in my password the screen goes black once again... – Jack Sniper Mar 11 '14 at 6:21
Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. – Stormvirux Mar 11 '14 at 6:31

Can you try this workaround to see if it helps?

$ sudo gedit /etc/defaults/grub &

In this file, find the line starting with GRUB_GFXMODE and set to to your screen resolution. For example, if your screen resolution is 1366x768, then,


Save the file and close Text Editor. Then execute the following command and reboot to see if it works.

$ sudo update-grub2
share|improve this answer
Changed the GFXMODE without any luck – Jack Sniper Mar 11 '14 at 7:14

If you choose to simply install the drivers after running the .run file rather than generating packages, you may have to run sudo aticonfig --initial and reboot.

In case you aren't aware, there is an easy way to install hardware drivers from Software Sources > Additional Drivers.

Try using the option while running the .run installer to create distribution-specific packages instead. That option will create three .debs, which you should install in this order by clicking the files:

  • fglrx_<version>-0ubuntu1_<architecture>.deb
  • fglrx-dev_<version>-0ubuntu1_<architecture>.deb
  • fglrx-amdcccle_<version>-0ubuntu1_<architecture>.deb

Or, with the terminal command: (assuming the .run file and thus resulting .deb files were directly in your home folder):

sudo dpkg -i fglrx*.deb

And reboot. It's a cleaner way to do things and shouldn't require configuration afterwards, except with dual-monitor scenarios and the like. But probably no terminal stuff.

If you use Kubuntu, you will also have to enable OpenGL detection in System Settings > Desktop Effects.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.