Accessible Login in 12.04?

[Hammer Attila]

Hy,

I see happened an upgrade with Casper package, to migrate LightDm a11y 
settings with GSettings, because Unity Greeter using GSettings.

When I try use an installed system in terminal the sudo -u lightdm 
gsettings set com.canonical.unity-greeter screen-reader false command, I 
get following error:
hammera at hammera-Satellite-L300:~$ sudo -u lightdm gsettings set 
com.canonical.unity-greeter screen-reader false

** WARNING **: Command line `dbus-launch 
--autolaunch=57457bea3de3d18c6e5b50340000000d --binary-syntax 
--close-stderr' exited with non-zero exit status 1: No protocol 
specified\nNo protocol specified\nAutolaunch error: X11 initialization 
failed.\n

** WARNING **: Command line `dbus-launch 
--autolaunch=57457bea3de3d18c6e5b50340000000d --binary-syntax 
--close-stderr' exited with non-zero exit status 1: No protocol 
specified\nNo protocol specified\nAutolaunch error: X11 initialization 
failed.\n
hammera at hammera-Satellite-L300:~$

Look what the result if I run sudo -u lightdm gsettings get 
com.canonical.unity-greeter screen-reader command:
hammera at hammera-Satellite-L300:~$ sudo -u lightdm gsettings get 
com.canonical.unity-greeter screen-reader
false

During installation this GSettings key with LightDm are setting properly?
How can possible enable an installed Ubuntu 12.04 system the screen 
reader support in login screen if this error is present? Temporary need 
sighted assistance?
Alan, when you tested the accessible login with screen reader when you 
reported the proper bug, how can enabled this function?

Attila