xdm and multiple displays

[jmr@everest.radiology.uiowa.edu (Joe Reinhardt)]

(this bounced the first time)

I am having a hard time getting xdm to work the way I want.
I want to start one 8bpp and one 16bpp display.   My Xservers file
has lines like this:

:1 local /usr/X11R6/bin/X :1 vt08 -verbose -bpp 8
:0 local /usr/X11R6/bin/X :0 vt07 -verbose -bpp 16

(I have tried many different incantations here)

When xdm starts the display on :0 comes up with a login widget.   I
can log in and things work normally.   But, several minutes later
another login widget comes up (from :1) and I see this in the xdm log:

xdm error (pid 2646): Hung in XOpenDisplay(:1), aborting
xdm error (pid 2646): server open failed for :1, giving up
xdm error (pid 2641): Display :1 cannot be opened
xf86OpenConsole: VT_WAITACTIVE failed

Thanks for any help!

-- 
Joe Reinhardt                            joe-reinhardt@uiowa.edu
Dept. of Radiology
Univ. of Iowa College of Medicine