Back in the early days of Linux (~1993) or so, I was trying to convince my workgroup in grad. school that Linux was a nice alternative for running our numerical simulations (in C). But I knew I had to get the graphics working, since no one wanted to use a text-only interface. It was a Dell PC using some graphics card; the word 'tulip' is in the fog of my memory. The graphics driver was not loading, giving some error about a reference not being found in the .o file. I didn't know what to do, so I loaded up the .o file in vi, searched for the offending reference, edited it out and saved the .o file. From then on the graphics works great!