Re: Install video card issue. CRaZy cOLouRs?
Ubuntu 12.10 has default Radeon drivers that should work fine with that video card -- so, the display is confusing.
If this is a desktop, try booting the install DVD with only one monitor connected and seeing if you get a readable display.
Also, is the Radeon the only video chip you have in the PC, or do you also have other graphics chips -- like onboard Intel, for example?
Ubuntu 15.04 Mate, Mint 17.1; MS Win 8.1, Win10 TP.
Will not respond to PM requests for support -- use the forums.