[twobob]

Spoiler:

hmm..

I get:

[root@kindle root]# LD_LIBRARY_PATH=../lib:$LD_LIBRARY_PATH Xephyr-5 :1 -title "
L:A_N:application_ID:xephyr_PC:N" -screen 600x800 -cc 4 -dpi 155 &

[root@kindle root]# _XSERVTransSocketOpenCOTSServer: Unable to open socket for inet6
_XSERVTransOpen: transport open failed for inet6/kindle:1
_XSERVTransMakeAllCOTSServerListeners: failed to open listener for inet6
[dix] Could not init font path element /mntususr/share/fonts/X11/misc/, removing from list!
[dix] Could not init font path element /mntususr/share/fonts/X11/TTF/, removing from list!
[dix] Could not init font path element /mntususr/share/fonts/X11/OTF/, removing from list!

and then it starts...

I suppose you checked

[root@kindle root]# ls -ak /mntususr/share/fonts/x11/100dpi/font*

/mntususr/share/fonts/x11/100dpi/fonts.alias
/mntususr/share/fonts/x11/100dpi/fonts.dir

just to like triple sure???

EDIT:

from Xephyr-5 --help

-fn string default font name
-fp string default font path

so you point it at anything you want...

here's some useful info too I suppose
(I have custom fonts on mine on the root dir as you can see, just go pick something you want to use...)

[root@kindle 100dpi]# pwd

/usr/share/fonts/X11/100dpi

[root@kindle 100dpi]# cat fonts.alias

Spoiler:

!! fonts.alias -- automatically generated file. DO NOT EDIT.
!! To modify, see update-fonts-alias(8).
!! /etc/X11/fonts/100dpi/xfonts-100dpi.alias
lucidasans-bolditalic-8 -b&h-lucida-bold-i-normal-sans-11-80-100-100-p-69-iso8859-1
lucidasans-bolditalic-10 -b&h-lucida-bold-i-normal-sans-14-100-100-100-p-90-iso8859-1
lucidasans-bolditalic-12 -b&h-lucida-bold-i-normal-sans-17-120-100-100-p-108-iso8859-1
lucidasans-bolditalic-14 -b&h-lucida-bold-i-normal-sans-20-140-100-100-p-127-iso8859-1
lucidasans-bolditalic-18 -b&h-lucida-bold-i-normal-sans-25-180-100-100-p-159-iso8859-1
lucidasans-bolditalic-24 -b&h-lucida-bold-i-normal-sans-34-240-100-100-p-215-iso8859-1
lucidasans-bold-8 -b&h-lucida-bold-r-normal-sans-11-80-100-100-p-70-iso8859-1
lucidasans-bold-10 -b&h-lucida-bold-r-normal-sans-14-100-100-100-p-89-iso8859-1
lucidasans-bold-12 -b&h-lucida-bold-r-normal-sans-17-120-100-100-p-108-iso8859-1
lucidasans-bold-14 -b&h-lucida-bold-r-normal-sans-20-140-100-100-p-127-iso8859-1
lucidasans-bold-18 -b&h-lucida-bold-r-normal-sans-25-180-100-100-p-158-iso8859-1
lucidasans-bold-24 -b&h-lucida-bold-r-normal-sans-34-240-100-100-p-216-iso8859-1
lucidasans-italic-8 -b&h-lucida-medium-i-normal-sans-11-80-100-100-p-62-iso8859-1
lucidasans-italic-10 -b&h-lucida-medium-i-normal-sans-14-100-100-100-p-80-iso8859-1
lucidasans-italic-12 -b&h-lucida-medium-i-normal-sans-17-120-100-100-p-97-iso8859-1
lucidasans-italic-14 -b&h-lucida-medium-i-normal-sans-20-140-100-100-p-114-iso8859-1
lucidasans-italic-18 -b&h-lucida-medium-i-normal-sans-25-180-100-100-p-141-iso8859-1
lucidasans-italic-24 -b&h-lucida-medium-i-normal-sans-34-240-100-100-p-192-iso8859-1
lucidasans-8 -b&h-lucida-medium-r-normal-sans-11-80-100-100-p-63-iso8859-1
lucidasans-10 -b&h-lucida-medium-r-normal-sans-14-100-100-100-p-80-iso8859-1
lucidasans-12 -b&h-lucida-medium-r-normal-sans-17-120-100-100-p-96-iso8859-1
lucidasans-14 -b&h-lucida-medium-r-normal-sans-20-140-100-100-p-114-iso8859-1
lucidasans-18 -b&h-lucida-medium-r-normal-sans-25-180-100-100-p-142-iso8859-1
lucidasans-24 -b&h-lucida-medium-r-normal-sans-34-240-100-100-p-191-iso8859-1
lucidasanstypewriter-bold-8 -b&h-lucidatypewriter-bold-r-normal-sans-11-80-100-100-m-70-iso8859-1
lucidasanstypewriter-bold-10 -b&h-lucidatypewriter-bold-r-normal-sans-14-100-100-100-m-80-iso8859-1
lucidasanstypewriter-bold-12 -b&h-lucidatypewriter-bold-r-normal-sans-17-120-100-100-m-100-iso8859-1
lucidasanstypewriter-bold-14 -b&h-lucidatypewriter-bold-r-normal-sans-20-140-100-100-m-120-iso8859-1
lucidasanstypewriter-bold-18 -b&h-lucidatypewriter-bold-r-normal-sans-25-180-100-100-m-150-iso8859-1
lucidasanstypewriter-bold-24 -b&h-lucidatypewriter-bold-r-normal-sans-34-240-100-100-m-200-iso8859-1
lucidasanstypewriter-8 -b&h-lucidatypewriter-medium-r-normal-sans-11-80-100-100-m-70-iso8859-1
lucidasanstypewriter-10 -b&h-lucidatypewriter-medium-r-normal-sans-14-100-100-100-m-80-iso8859-1
lucidasanstypewriter-12 -b&h-lucidatypewriter-medium-r-normal-sans-17-120-100-100-m-100-iso8859-1
lucidasanstypewriter-14 -b&h-lucidatypewriter-medium-r-normal-sans-20-140-100-100-m-120-iso8859-1
lucidasanstypewriter-18 -b&h-lucidatypewriter-medium-r-normal-sans-25-180-100-100-m-150-iso8859-1
lucidasanstypewriter-24 -b&h-lucidatypewriter-medium-r-normal-sans-34-240-100-100-m-200-iso8859-1

There are two types of important files: fonts.dir in each of these paths, and fonts.alias in some of the paths. For example, let's go to /usr/share/fonts/X11/100dpi, and open the files. The files look similar to this:

[fonts.dir]

366
charB08.pcf.gz -bitstream-charter-bold-r-normal--11-80-100-100-p-69-iso8859-1
charB10.pcf.gz -bitstream-charter-bold-r-normal--14-100-100-100-p-88-iso8859-1
charB12.pcf.gz -bitstream-charter-bold-r-normal--17-120-100-100-p-107-iso8859-1
charB14.pcf.gz -bitstream-charter-bold-r-normal--19-140-100-100-p-119-iso8859-1
charB18.pcf.gz -bitstream-charter-bold-r-normal--25-180-100-100-p-157-iso8859-1
...

The first line specifies the number of fonts under current directory. Following lines map file names to font names.

[fonts.alias]

!! fonts.alias -- automatically generated file. DO NOT EDIT.
!! To modify, see update-fonts-alias(8).
!! /etc/X11/fonts/100dpi/xfonts-100dpi.alias
lucidasans-bolditalic-8 -b&h-lucida-bold-i-normal-sans-11-80-100-100-p-69-iso8859-1
lucidasans-bolditalic-10 -b&h-lucida-bold-i-normal-sans-14-100-100-100-p-90-iso8859-1
lucidasans-bolditalic-12 -b&h-lucida-bold-i-normal-sans-17-120-100-100-p-108-iso8859-1
...

This file maps font alias to font names. So it is clear that once font 'fixed' is needed, the font server search fonts.alias in each font path for a match. If the match exists, the corresponding font file is specified in fonts.dir. If no match exists the X server cannot start.

Hope this helps.

For your needs this would equate to something like: (random font chosen)

[root@kindle 100dpi]# LD_LIBRARY_PATH=../lib:$LD_LIBRARY_PATH ./Xephyr-5 :1 -title "L:A_N:application_ID:xephyr_PC:N" -screen 600x800 -cc 4 -dpi 155 -fp /usr/share/fonts/X11/100dpi/ -fn "-bitstream-charter-bold-r-normal--11-80-1
00-100-p-69-iso8859-1"

or with an alias: (other random font)

[root@kindle 100dpi]# LD_LIBRARY_PATH=../lib:$LD_LIBRARY_PATH Xephyr-5 :1 -title "L:A_N:application_ID:xephyr_PC:N" -screen 600x800 -cc 4 -dpi 155 -fp /usr/share/fonts/X11/100dpi/ -fn "lucidasans-bolditalic-8"