I have a new Dell L401X with GeForce GT 420M with the same issue. After Installing the NVidia-propietary drivers using the nvidia-installer (NVIDIA-Linux-x86-260.19.21.run) the only way to having a nonblank screen is by using an external monitor through the HDMI port. I have tried and wasted several days with this problem. It seems as if xorg.conf is never well configured by nvidia-xconfig, so whn trying to run nvidia-settings (as root) it never detects the two monitor, just the external.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/656330 Title: Nvidia Beta 260 driver breaks 330m cards -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs