Xrandr also works for me, in my case I did: xrandr --output HDMI1 --left-of LVDS1
So, to me it appears to be the gnome-display-properties program that is broken, since xrandr works w/no problems. -- gnome-display-properties crashed with SIGSEGV in g_slice_alloc() https://bugs.launchpad.net/bugs/631133 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs