Xephyr will not span two monitors in fullscreen mode

[Rice, James M CIV NSWCDD, K73]

Try this one more time, no response the first attempt...then the problem became OBE for a while, but is now back.

First I would like to note that this is not multi-seat.

I am trying to set up Xephyr to run on a thin client, and remotely connect to a machine that requires a dual monitor display for its application.  It also must be full screen to display the application correctly, i.e. no border.

First I set up dual monitor with xrandr

>xrandr --output DVI-1 --mode 1280x1024 --output VGA-0 --mode 1280x1024 --above DVI-1

And all is well, I have distinct top and bottom monitors, xrandr -q outputs what I would expect.

>Xephyr :1 -query myhost -once -fullscreen -keybd ephyr,,,xkbmodel=uvdev

Xephyr only displays on the bottom display

Any insights?  Should I write a bug against Xephyr?

Thanks in advance for any help!
James.
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