"X -query localhost" results in blank screen !?!

[Vlad D. Markov]

On Tue, 16 Sep 2003 16:46:11 +0900
Rob Lahaye <lahaye at snu.ac.kr> wrote:

> 
> 
> Hello,
> 
> I thought I more or less understand how to handle these things in X,
> but I am totally puzzled here.
> 
> For me, there are three crucial files
> 
> /etc/ttys:
> 	ttyv8   "/usr/X11R6/bin/xdm -nodaemon"  xterm   on  secure
> 
> and /usr/X11R6/lib/X11/xdm/xdm-config:
> 	! SECURITY: do not listen for XDMCP or Chooser requests
> 	! Comment out this line if you want to manage X terminals with
> 	xdm!DisplayManager.requestPort:    0
> 
> and /usr/X11R6/lib/X11/xdm/Xaccess:
> 	* #any host can get a login window
> 	* CHOOSER BROADCAST #any indirect host can get a chooser
> 
> 
> At startup, I get an xdm/Xlogin on screen on display :0.
> With the above settings I expect the following should work
> for creating another Xlogin screen
> 
> 	X :1 -query localhost
> 
> 
> Indeed it switches screen, but it is blank only; even no error
> messages from X.
> Any ideas?
> 
> Thanks,
> Rob.
> 
> PS: Unrelated: have you noticed the error message in /var/log/xdm.log
> 	xdm error (pid 157): extra arguments on command line:
> 	xdm error (pid 157):  "ttyv8"
> 	xdm error (pid 157):
> Is this some miscommunication between init, /etc/ttys and xdm ?
> 
It worked for me "X :2 -query localhost", I have X running already on
:1.
I start my xdm from shell scripts instead of ttys, doubt that is the
reason.