Using driver intel version 2.1.1-0ubuntu9 with xserver 7.2-5ubuntu13

Using the glpixmap example that comes with Qt3 in examples/opengl/glpixmap dir, it contains three options, File->Grab Frame Buffer, File->Render Pixmap, File->Render Pixmap Hidden.
The first entry somewhat works but gives rendering problems, the second and third completely fail, and give
X Error: GLXBadContext 154
  Major opcode:  143
  Minor opcode:  5
  Resource id:  0x1600b74
QGLContext::makeCurrent(): Failed
in the shell

I'm using "Intel Corporation 82946GZ/GL Integrated Graphics Controller (rev 02)".