I recently built a computer, then installed Ubuntu 12.04.2 LTS (Desktop, AMD64)using the Universal USB Installer from pendrivelinux.com. When it was first installed, the Unity bar (at the left) was flickering a bit, so I installed the AMD Catalyst 13.1 proprietary driver from the AMD website, which stopped the flickering. I then downloaded the following: •Java 7 update 21 (a real pain) •OpenJDK runtime environment for Java 7 •Minecraft •Steam After a while, when I tried playing Minecraft, it started to go to some kind of command line that was NOT terminal (can not input) before going to the login screen. After this, it asked me to install the AMD fglrx driver updates and after a reboot, it started going to the same command line-type-non-Terminal thing I explained earlier. Does anyone know why this is happening and how I can fix it? I am a noob when it comes to the deeper parts of Linux, I only know things like apt-get (which will not work here).
Specs AMD A6-5400K 4GB RAM 60GB SSD MSI FM2-A55M-E33 motherboard