So right before I had this problem I tried to install AMD GPU drivers, via the website and followed a video tutorial (links below). After I restarted, every time I tried to login, even as a guest, it would give me a black screen for a second, make a noise, and go back to the login screen. I have seen people have simular problems, and to fix it they used ALT+CTRL+F1 or ALT+CTRL+T. For me, Alt+Ctrl+f1-f6 give me a black screen, and alt+ctrl+t does nothing. Is there a fix for this or do I have to re-install Ubuntu?

Links:
AMD Drivers: http://support.amd.com/en-us/downloa...p?os=Linux+x86
Tutorial: https://www.youtube.com/watch?v=evqpassbyqA
P.S.: I have a Intel i7 930 cpu and a AMD radeon gpu (not sure the exact one but its like 4 years old.)

fwiw: I don't have experience with installing amd drivers so just guessing. Perhaps you've already thought of all of this.

It sounds like you just need to get onto your system. Two ways come to mind.
1. Reboot and hit esc or f2 or some such right away before booting really takes place to get into the boot menu to choose recovery mode.
2. Use a thumb drive with an os on it to boot into the machine.

Then I would try removing the catalyst drivers and start over.


The driver download page says the driver works on ubuntu 14.04.2.

You state that you are running 14.04. Perhaps you need to ensure that you have 14.04.2

Ubuntu has another way to install proprietary drivers you might try:
https://help.ubuntu.com/community/BinaryDriverHowto/AMD

I also wonder if your driver has a screen resolution wrong or something so when you hit ctr-alt-f1 the login prompt is above the visible portion of the screen.

Welcome aboard.

You should be able to get to a terminal by entering ctl+alt+f2, where you should see a $ sign in the top left corner, this is the command prompt, waiting for you to enter a command.

Likely info needed will be your graphics chip, card name & number, which should be found by
then post dmesg.txt on here, & hopefully someone can sort it out with you.

Boot from Ubuntu live cd and chroot into your installed linux: https://help.ubuntu.com/community/BasicChroot
Then rename "xorg.conf" it can be in the "/etc/X11/xorg.conf.d/" folder. Then rename "xinitrc" you can find it in "/etc/X11/xinit/". Then rename ".xinitrc" if it exists in your "$HOME" directory. Disable "gdm" daemon "http://askubuntu.com/questions/76543/how-do-i-disable-gdm-and-graphical-user-selection"
Then you can reboot and you will get console prompt. To create new xorg.conf file "http://askubuntu.com/questions/217758/how-to-make-an-xorg-conf-file"

Then you can try if X server is working
or you can use any installed GUI application instead of "gnome-session" just for testing purpose.