I just transferred a HP pavilion dv2000 from windows to Ubuntu 12.04.
When it starts up there there are lines across the screen and after I log in, The mouse can't reach the edge of the screen on the left and if you touch the top of the screen with the cursors, a bar runs top to bottom and stays there as long as it touches the top. If you close and open the screen several times, sometimes it goes away.
i found a suggestion in a forum to check the print out of:
/usr/lib/nux/unity_support_test --print
it printed this:
nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 30
nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 30
nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 55
nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 56
nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 59
nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 58
nvfx_screen_get_param:95 - Warning: unknown PIPE_CAP 30
OpenGL vendor string: nouveau
OpenGL renderer string: Gallium 0.4 on NV67
OpenGL version string: 2.1 Mesa 8.0.4
Not software rendered: yes
Not blacklisted: yes
GLX fbconfig: yes
GLX texture from pixmap: yes
GL npot or rect textures: yes
GL vertex program: yes
GL fragment program: yes
GL vertex buffer object: yes
GL framebuffer object: yes
GL version is 1.4+: yes
Unity 3D supported: yes