It appears two mirror mode while boot up with VGA/HDMI cable and then press FN+F3 to switch display mode

[Ike Panhc]

Summary: When system boot up with VGA/HDMI cable plugged, then switch display mode will show mirror mode twice

Steps to reproduce:
1. Device connected to a LCD monitor with VGA/HDMI cable
2. Boot up this device
3. System enters ubuntu then the screen mode will be "Mirror" mode
4. Press FN+F3 to switch display mode

Expected Result:
Display modes should be "Mirror mode" -> "Extended mode" -> "Internal only mode" -> "External only mode"

Actual Result:
Display modes are "Mirror mode" -> "Mirror mode" -> "Internal only mode" -> "External only mode"

Note:
If connect VGA/HDMI cable after system boot up then it won't have this issue.

[Ayan George (ayan)]

The g-s-d xrandr plugin has been heavily refactored. I will verify that this is even still an issue before sending a patch upstream.

[Ayan George (ayan)]

Packages with code that should work in Oneiric and Precicise are available for testing in the following PPA:

https://launchpad.net/~ayan/+archive/gnome-settings-daemon/

[Ayan George (ayan)]

Sorry for the delay -- the ppa is working now.

[Anthony Wong (anthonywong)]

Here are testing steps

0. Link machine with external monitor via D-sub
1. Clean install oneiric
2. sudo apt-get update;sudo apt-get dist-upgrade
3. reboot and testing Fn+F3 and the behaviour is

    mirror mode -> mirror mode -> internal only -> external only

4. sudo apt-add-repository ppa:ayan/gnome-settings-daemon
5. sudo apt-get update;sudo apt-get dist-upgrade

    3 packages update: gnome-desktop3-data gnome-settings-daemon libgnome-desktop-3-2
    the version is 3.2.1-0ubuntu1.3~ayan1

6. reboot and testing Fn+F3 and the behaviour is

     when hit Fn+F3, the unity dash appear or disappear always, and video mode is not changed.

Looks like the patch disable the super-p detection.