[Discuss-gnuradio] opengl "persistence" error

[Arturo Rinaldi]

Every time I tick the "Persistence" box in one of the scopes i get this 
error :

Traceback (most recent call last):
  File 
"/usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/plotter/plotter_base.py", 
line 192, in _on_paint
    GL.glAccum(GL.GL_LOAD, 1.0)
  File "/usr/lib/pymodules/python2.6/OpenGL/error.py", line 208, in 
glCheckError
    baseOperation = baseOperation,
OpenGL.error.GLError: GLError(
    err = 1282,
    description = 'invalid operation',
    baseOperation = glAccum,
    cArguments = (GL_LOAD, 1.0)
)

i have correctly installed my ati catalyst drivers on my laptop (latest 
version). My laptop GPU is a Radeon HD4570 and my OS Ubuntu 10.10. I 
compiled and installed from source gnuradio v. 3.3.0.

Regards

         Arturo Rinaldi