Hi all,
I'm once more trying my hand at Linux, but it's been so long that I've forgotten everything I learned last time and going back in again as a total newbie.
I tried out SteamOS first, but found it much too clunky for my tastes and, despite being based on Debian, seemed to have had a lot of functionality removed and inability to install some packages even after adding in Debian repos to the sources.list, so I ended up switching to vanilla 64-bit Debian 8 using KDE as my desktop. At first things were going good, managed to install the AMD Graphics Drivers and get Steam itself installed, along with downloading/installing a few games.
I then downloaded a game from gog.com but was getting an error message, which on looking it up appeared to be due to my only having 64-bit libraries for my graphics drivers and no 32-bit ones. I did some more Googling, ran some commands and did some apt-get installs (though sadly I can't recall exactly what they were) and eventually, the game launched fine and all appeared well.
The next time I started up my laptop though, Debian just boots straight to a full screen command line, not the desktop GUI that I want, and I have absolutely no idea how to either switch back to the GUI, or make it the default again. I'm not sure if I've somehow removed KDE, the xserver (I think?), somehow disabled one of them or just changed the startup preferences.
I'd really rather not have to reinstall the whole system again, so any suggestions will be very much appreciated!