Uninstalling the AMD Catalyst Proprietary Driver
1-Launch the Terminal Application/Window.
2-With superuser permissions, enter the command "aticonfig --uninstall".
Note: Alternatively, uninstall can be launched with superuser permissions using the following commands as well
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sh ati-driver-installer-x86.x86_64.run --uninstall
3-If the above command is not supported, then an error message “Uninstaller for AMD Catalyst TM Proprietary driver, /usr/share/ati/amd-uninstall.sh, does not exist or cannot be found” is displayed.
Use that operating system’s package management (RPM, APT, etc.) software to remove the AMD Catalyst proprietary driver.
In order to restore the system to the previous state before the last installation, the original configuration file needs to be restored manually. Without that, Xorg may fail to start properly after uninstalling the driver and rebooting the system.
To restore the original Xorg configuration file:
-Locate backup configuration files: ls /etc/X11/xorg.conf.original-*
-Take the latest version with the highest number and copy it over the existing xorg.conf file: cp /etc/X11/xorg.conf.original-<number> /etc/X11/xorg.conf
After that it is safe to reboot the system and it will start up using the open-source driver that ships with the OS.
4-Reboot your system.
You have now successfully uninstalled the AMD Catalyst proprietary driver for Linux.
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