Hola! ya se porque no encontraba el fichero dichoso, no tengo KDE!! una vez instalado kde y kdm, aparece el fichero, lo edito como me dices y me pasa lo mismo, la pantalla gris con la equis, salgo como tu me dijistes y esto es lo que dice la pantalla:
root@Ubuntu:/home/cmip # X :1 -query 192.168.1.4
This is a pre-release version of XFree86, and is not supported in any
way. Bugs may be reported to XFree86@XFree86.Org and patches submitted
to fixes@XFree86.Org. Before reporting bugs in pre-release versions,
please check the latest version in the XFree86 CVS repository
(www.XFree86.Org/cvs).
XFree86 Version 4.3.0.1 (Ubuntu 4.3.0.dfsg.1-6ubuntu25.1 20041117134039 root@)
Release Date: 15 August 2003
X Protocol Version 11, Revision 0, Release 6.6
Build Operating System: Linux 2.6.8.1 i686 [ELF]
Build Date: 17 November 2004
Before reporting problems, check www.XFree86.Org/
to make sure that you have the latest version.
Module Loader present
OS Kernel: Linux version 2.6.8.1-4-386 (buildd@rockhopper) (gcc version 3.3.4 (Debian 1:3.3.4-9ubuntu5)) #1 Wed Dec 22 14:10:57 UTC 2004
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/XFree86.1.log", Time: Sun Jan 23 17:56:42 2005
(==) Using config file: "/etc/X11/XF86Config-4"
Skipping "/usr/X11R6/lib/modules/extensions/libGLcore.a:m_debug_clip.o": No symbols found
Skipping "/usr/X11R6/lib/modules/extensions/libGLcore.a:m_debug_norm.o": No symbols found
Skipping "/usr/X11R6/lib/modules/extensions/libGLcore.a:m_debug_xform.o": No symbols found
Skipping "/usr/X11R6/lib/modules/extensions/libGLcore.a:m_debug_vertex.o": No symbols found
Skipping "/usr/X11R6/lib/modules/fonts/libspeedo.a:spencode.o": No symbols found
Synaptics DeviceInit called
SynapticsCtrl called.
Synaptics DeviceOn called
Warning: font renderer for ".pcf" already registered at priority 0
Warning: font renderer for ".pcf.Z" already registered at priority 0
Warning: font renderer for ".pcf.gz" already registered at priority 0
Warning: font renderer for ".snf" already registered at priority 0
Warning: font renderer for ".snf.Z" already registered at priority 0
Warning: font renderer for ".snf.gz" already registered at priority 0
Warning: font renderer for ".bdf" already registered at priority 0
Warning: font renderer for ".bdf.Z" already registered at priority 0
Warning: font renderer for ".bdf.gz" already registered at priority 0
Warning: font renderer for ".pmf" already registered at priority 0
Could not init font path element unix/:7100, removing from list!
Synaptics DeviceOff called
te suena de algo todo esto?
Edito: los dos linux usan KDE y KDM.