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After installing the AMD Catalyst driver which I downloaded from the AMD website, it asked me to reboot and after that I got a black screen with "Input not supported".

enter image description here

I know it's the graphics problem, also the grub menu recovery mode didn't help. I want the 1366×768 resolution. I'm absolutely new to Ubuntu, and this is very frustrating.

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  • Amd catalyst driver from the website
    – Abhishek Magji
    Oct 16, 2014 at 3:04
  • Is there a file in your filesystem from the AMD Catalyst driver at this path: /usr/share/ati/fglrx-uninstall.sh?
    – karel
    Oct 16, 2014 at 3:19
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    Since it has installed properly, there must be, but i cannot access it because i cannot see anything.
    – Abhishek Magji
    Oct 16, 2014 at 3:21
  • Look at this answer. This answer tells you how to login to a text-only console. Then run this command and comment about the results: cd /usr/share/ati/ && ls. The command will tell you if there is a file called fglrx-uninstall.sh in the /usr/share/ati/ directory.
    – karel
    Oct 16, 2014 at 3:27
  • Is there a way to uninstall it from the grub (shift) menu?
    – Abhishek Magji
    Oct 16, 2014 at 3:29

1 Answer 1

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  1. Open a text-only virtual console by using the keyboard shortcut Ctrl+Alt+F3.

  2. At the login: prompt type your username and press Enter.

  3. At the Password: prompt type your user password and press Enter.

  4. Now you are logged in to a text-only console, and you can run terminal commands from the console. Then run this command and comment about the results: cd /usr/share/ati/ && ls. The command will tell you if there is a file called fglrx-uninstall.sh in the /usr/share/ati/ directory. To reboot the system from the console run the command: sudo shutdown -r now. Press the keyboard shortcut Ctrl+Alt+F7 to exit from the virtual console. In Ubuntu 17.10 and later press the keyboard shortcut Ctrl+Alt+F2 to exit from the virtual console.

  5. If there is an fglrx-uninstall.sh file, you can uninstall the AMD Catalyst driver and reboot by running: sudo sh /usr/share/ati/fglrx-uninstall.sh && sudo reboot. After you reboot, your computer will be using the open source graphics driver as it did before.

  6. You can use the terminal program xrandr to create a custom resolution (in your case you want the native resolution of your monitor - 1366×768 pixels) by following the instructions in this link: How to set the monitor to its native resolution which is not listed in the resolutions list?.

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  • If there is an fglrx-uninstall.sh file, you can uninstall the AMD Catalyst driver and reboot by running: sudo sh /usr/share/ati/fglrx-uninstall.sh && sudo shutdown -r now. Then install the AMD graphics driver from the Ubuntu Software Center and reboot by running: sudo apt-get install fglrx && sudo shutdown -r now
    – karel
    Oct 16, 2014 at 3:48
  • Am sorry but I am not understanding at what state of my computer should i open the text-only console because i cannot do it when I start my computer normally because I cannot see anything.
    – Abhishek Magji
    Oct 16, 2014 at 3:55
  • You can open the text-only console from anywhere, so use the keyboard shortcut to open the text-only console from wherever you are, even if it's only a black screen it should work from there.
    – karel
    Oct 16, 2014 at 4:00
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    Aha i was missing the space between 'sh/usr'..thanks a lot Mr. Its downloading now from the sotware center.
    – Abhishek Magji
    Oct 16, 2014 at 4:37
  • Does the "input not supported" screenshot in my answer look like your "input not supported" screen that you saw?
    – karel
    Oct 16, 2014 at 4:37

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