Felix Miata wrote:

> xserver
In your example I don't see how you are passing the display number to
xserver command

       All  of  the  X  servers  accept the command line options described
below.  Some X servers may have alternative ways of providing the
parameters
       described here, but the values provided via the command line options
should override values specified via other mechanisms.

       :displaynumber
               The X server runs as the given displaynumber, which by
default is 0.  If multiple X servers are to run simultaneously on  a  host, 
each
               must  have  a unique display number.  See the DISPLAY NAMES
section of the X(7) manual page to learn how to specify which display
number
               clients should try to use.