Screen not responding...
 

I've just installed new drivers for my videocard (so I can run Linux on widescreen) and when I restart my computer, I can see the loading screen of Fedora Core (which seems to be in the wanted resolution, 1280x800). But when it comes to enter my username and password, nothing! The screen just black out but the computer still runs... Is there a way to recover the old settings so I can see what I'm doing?

Use the control-alt-F1 ( or control-alt some other Function key) to get a text login screen. Go to /etc/X11 and edit xorg.conf

Look for the Section "Device" and change the Driver to "vesa", next, change the DefaultDepth of the Section "Screen" to be less than 24, delete the "1280x1024" part of the modes selections, so that it will start with 1024x768 instead.

The goal is to get your graphical login back. Once you have that back, save a copy of the working xorg.conf, so you can experiment with what ever gui tuning tools FC4 has or your driver software uses. Failing those, there's always xorgconfig

I would like to try what you suggest, but when I do the Ctrl+Alt+F1 to get to the text interface, I don't even have time to enter my username and my password before the screen turns black! I've tried to access some of the files by creating an image of my installation with my Fedora DVD, but I still can't modify anything. Anyway, should I reinstall Linux and just forget about the widescreen support?

But the only thing I can't understand, is why does the loading screen works but not the login screen???? It's kind of weird... anyway... I'll see what I can do.

Try working your way down the other control-alt-Fn keys until you find one that works.

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Also, if you can boot from the recovery disk from your distro, mount the hard drive, then get to the /etc/X11 directory, you can establish a sane xorg.conf or XF86Config