I really like this blur effect which blurs out background of transparent windows making the text more readable. However, I simply can not get it working on my computer.

Core 2 1.6G
ATI Radeon x1400
Kubuntu 9.04 64-bit
latest xserver-xorg-video-ati graphics driver
Standard + mythbuntu repos

The effects are activated using native kde4 (systemsettings->Desktop). Effects works mostly fine (crashes once in a while but that is matter for another post). Only blur is not working.

I did a pretty identical install on a computer with Mobility Radeon HD 3450 and using xorg-driver-fglrx and standard repos. No blur there either with otherwise working effects

Help me out please...

EDIT: I see that this has been pointed out another section 6 months ago with no results. Sorry for the duplication. Also, I will go ahead and add additional info
x1400 [font=Courier]glxinfo|grep shader[/font]


3450 [font=Courier]glxinfo|grep shader[/font]
[font=Courier]GL_ARB_fragment_program_shadow, GL_ARB_fragment_shader,
GL_ARB_point_parameters, GL_ARB_point_sprite, GL_ARB_shader_objects,
GL_ARB_shader_texture_lod, GL_ARB_shading_language_100, GL_ARB_shadow,
GL_ARB_vertex_buffer_object, GL_ARB_vertex_program, GL_ARB_vertex_shader,
GL_ATI_fragment_shader, GL_ATI_meminfo, GL_ATI_separate_stencil,
GL_EXT_gpu_program_parameters, GL_EXT_gpu_shader4[/font]

Open source graphics drivers don't support GLSL shaders which is a requirement for the (Completely broken and unstable that we highly recommend not using) blur effect.