On this question I figured out that i needed to install drivers for my graphics card. The output of
lspci says I have
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RV200 [Mobility Radeon 7500] and in Dash > Detail says my graphics are
R100 (RV200 4C57) x86/MMX/SSE2 TCL DRI2 How do I install the drivers for my card?
I think I need the drivers because I am trying to get TF2 working which I asked about with this question Team fortress 2 black screen