For me it started to appear just last week. Running this version of NVidia drivers on a Dell Latitude 6520 using a 4200NVS on latest ubuntu and all updates:
nvidia-xconfig: version 313.09 (buildmeis...@swio-display-x86-rhel47-04.nvidia.com) Tue Dec 4 22:54:46 PST 2012 Will try the agp=off -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/421048 Title: Black dots appear on screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-180/+bug/421048/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs