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dspacejs
Asked: 2015-10-12 23:31:44 +0800 CST

Selections for graphics drivers are disabled

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Yesterday I moved to the proprietary drivers from the X.org drivers using the Additional Drivers application, and reverted back to the X.Org AMD/ATI drivers on my machine.

I've just booted my machine now after yesterday, and my multi-monitor setup is not working. I can't change the multi-monitor settings in the Screen Display section of the system settings.

I checked my graphics drivers and noticed this:

enter image description here

It will not let me revert back to my old settings, and I'm not sure why. I want to be able to have the option to choose any of the drivers, and I also want the X.Org drivers to be used.

How can I fix this?

drivers

1 Answers

  1. Best Answer

    To revert back to open source radeon drivers - open a terminal and execute : 

    sudo apt-get purge fglrx  
sudo reboot

    If you want to use AMD Catalyst drivers again, open a terminal and execute : 

    sudo apt-get install fglrx  
sudo reboot
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