Just to note -
While it was yet again an interesting time returning to nouveau with 3d support - it kept giving me
OpenGL renderer string: Gallium 0.4 on llvmpipe instead of Gallium 0.4 on NV86, once that was squared away it seems as I think you've noted the white windows only occur on the nvidia driver
So while this hardware is ok with 0.9.7.8 & nvidia drivers, 0.9.8 may not be so kind...
Just to note -
While it was yet again an interesting time returning to nouveau with 3d support - it kept giving me
OpenGL renderer string: Gallium 0.4 on llvmpipe instead of Gallium 0.4 on NV86, once that was squared away it seems as I think you've noted the white windows only occur on the nvidia driver
So while this hardware is ok with 0.9.7.8 & nvidia drivers, 0.9.8 may not be so kind...