kdbus affecting access to apps running as root

[Peter Vágner <pvdeejay gmail com>]

Hello,
Kdbus is currently being developed IPC mechanism that can replace dbus 
and / or provide more. This is my short explanation as I see it. More 
can be seen at http://www.freedesktop.org/wiki/Software/systemd/kdbus/
I am running kdbus out of tree kernel module on Arch linux for about a 
week now. Originally I assumed it might somehow affect the accessibility 
stack performance as at-spi2-core communicates with its clients over dbus.
I haven't yet noticed a performance boost in day to day use however I 
have just discovered a problem or perhaps just a missconfiguration as 
per the default.
The problem is that while running this kdbus kernel module I can no 
longer get access to apps running as root.
I have just tried to run
sudo gedit
via terminal
I expect gedit window to popup and be accessible.
Instead I am seeing chain of unusual things.
Orca gets silent, I guess it can see no keyboard events as I can't get 
it to produce any audible output by pressing various keyboard shortcuts 
and standard gnome navigation commands.
I seem to have no access to other windows. The only accessible window I 
can recognize is the original terminal window where I have launched sudo 
gedit from. As I close that window nothing appears to be accessible so I 
either have to kill X by logging from another machine or I have to 
reboot if I have no spare machine. What is also so unusual when I have 
no keyboard access I can randomly move and click the mouse and this will 
generate accessibility events.
I can't give you an exact quote but I am under an impression GNOME 
developers along with systemd developers are promoting kdbus and are 
hoping for it to become accepted into the official kernel. It is even 
prepackaged on fedora and the only thing early adopter of this 
technology running fedora has to do in order to enable it is to tweak 
his kernel parameters to include kdbus=1 .
I know this is late time in the 3.17 development cycle but if anyone 
with enough knowledge can take a look at this. It would for sure benefit 
adopting this thing.

Greetings

Peter