ok, closing the bug. the reason why it didn't show the second screen is that the mga driver doesn't support randr-1.2.
** Changed in: xorg (Ubuntu) Status: Incomplete => Invalid -- No 2nd Screen for Matrox DualHead Card in "Screen Resolution" https://bugs.launchpad.net/bugs/231448 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs