It would be more useful to get some logs with the device already connected, but I'm seeing in the logs:
[ 5.126206] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work. Maybe try booting with video.allow_duplicates=1 added to the kernel command line? ** Changed in: xorg (Ubuntu) Status: New => Invalid ** Changed in: xorg (Ubuntu) Status: Invalid => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1325661 Title: second monitor problems To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1325661/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs