I do not have an Nvidia card, and yet I am experiencing this issue. Here are my system details:
Ubuntu 12.04 LTS Processor AMD Athlon(tm) Dual Core Processor 4450B x 2 Graphics VESA: RS780 Experience Standard OS type 32-bit -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/990904 Title: Dual monitor problem after upgrade to 12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/990904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs