Today, I did an upgrade of xserver-xorg (1:7.6+7ubuntu7), and the problem was solved. No more problems.
The nvidea driver I use is: 285.05.09-0ubuntu1~oneiric~xup1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/873375 Title: nvidia-settings freeze on activating TwinView To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-settings/+bug/873375/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
