It looks like the server insists on using the LVDS for initial setup. It would be great if you can file a bug upstream, bugs.freedesktop.org.
In addition to removing the "1920" mode, you can also reduce the Virtual (horizontal) size to 1920+1280 or even 1280+1280, not that it should normally matter. ** Changed in: xserver-xorg-video-ati (Ubuntu) Assignee: Tormod Volden (tormodvolden) => (unassigned) Status: Incomplete => Confirmed -- Dual-head fails with ati driver, appears related to 'crtc' https://bugs.launchpad.net/bugs/172601 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs