First off, if the 1-click installs are really still causing problems, someone should take them down.
Second, I don’t see much reason for a reinstall. It isn’t a terribly hard fix to go through, though getting the ATI drivers working has traditionally required (and still seems to require) a little bit of perseverance. And, since X, the graphical server, is no longer booting, you will have to deal with the command line. In my opinion this is not a bad thing, and if you stay with linux, you will certainly get a bit of experience at the command line sooner or later.
Getting X working again**
So, let’s get started. When you boot and get a black screen, you should be able to type Ctrl+Alt+1 to get the option to log-in in a text terminal. Type in your username and password, or, if you prefer to by-pass all the sudo commands, log in as root, as we will be working on files with root permissions.
The first step is to change the config file for X to tell it not to try to use the ATI driver you just installed, but to use the generic ati driver instead. To do this:
First, back up the config file with
cp xorg.conf xorg.conf-fglrxfailed
Then, edit your xorg.conf file with your favorite text editor and change any text
You should now be able to reboot your system and have the graphics load again, of course without the new drivers.
If you wish to install the ATI fglrx drivers, you should download them from ATI’s site and install them manually. (I am using the 9.2 version; I haven’t taken the time to try 9.3.)
Assuming that you boot okay, I recommend that you back up the xorg.conf file again, so that you have a working copy to fall back on.
Go ahead and remove whatever packages were installed by that one-click installer.
Installing the ATI drivers
Download the installer from ATI’s website.
Make sure you have all the header’s installed for your kernel.
Run the installer, select to install, and let it run.
When the installer finishes, run the command
sudo aticonfig --initial
After you do this, either restart X with a double Ctrl+Alt+Backspace or reboot your machine. You should have the drivers working. To check, run the command “fglrxinfo” in a terminal and make sure the output displays the version of your card there, and doesn’t mention “mesa” anywhere.
If any of this doesn’t work, post back here and we will see what other help we can get you.
Good luck, and welcome to openSuSE!