Afer update to 12.3 no graphics acceleration

openSUSE 12.3
nvidia gt 470
NEC multisync ea241wm (1920x1200)
Gnome desktop

I just updated from 12.2. The graphics acceleration worked just fine then, and the monitor resolution was the native 1920x1200. Now I am stuck with non-accelerated graphics and 1600x1200 and an annoyingly flickery mouse. The Display settings only offers a “laptop” monitor with the single 1600x1200 option.

How do I correct this mess?

$ glxinfo | grep render
direct rendering: Yes
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 0x302)
    GL_NV_conditional_render, GL_AMD_draw_buffers_blend, 


In the directory /etc/modprobe.d/ was this file: <nvidai.conf>. It contained the line

blacklist nouveau

After deleting the file and rebooting, the graphics started as I expected, hardware acceleration and 1920x1200 resolution.

I do not know why that file was there, or why it was ignored in 12.2.

So you would think that file was left over from an attempt to install the nVIDIA proprietary video driver and doing an upgrade would leave it in place. I would like to add that I did have an issue on one PC with nVIDIA which would not allow me to select the compositing type setting of openGL and always defaulted to XRender. The only way to break from that setup was to upgrade the kernel version to 3.8.4 and then I was able to select openGL as normal.

Thank You,