I also have the same problem on a fresh install, running 2 GTS-250s in SLI. Additional Drivers shows that Nvidia Current is active, but not in use. I have tried reinstalling the kernel headers, as well as the nvidia-current package, neither of which has worked.
$ uname -a Linux parents-desktop 2.6.38-8-generic-pae #42-Ubuntu SMP Mon Apr 11 05:17:09 UTC 2011 i686 athlon i386 GNU/Linux $ lspci | grep VGA 04:00.0 VGA compatible controller: nVidia Corporation G92 [GeForce GTS 250] (rev a2) 05:00.0 VGA compatible controller: nVidia Corporation G92 [GeForce GTS 250] (rev a2) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/772207 Title: version 173.14.30 is buggy for GeForce FX 5200 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs