Newbie offers thanks

Thank you, all who answered my plea for help. Among your
suggestions was the one that worked. It is a measure of my
ignorance of matters X, that I hadn’t even thought to startx
before trying to run the SDL test programs. That was all it
took. Thank you for your prompt responses and good ideas.

Incidentally, I am not a newbie to programming, but I am quite
new to Linux and especially to SDL. If you’re curious what my
application is, check out my website (see signature below).