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XFree86 Version 22.214.171.1242 (4.4.0 RC 2)
Release Date: 18 December 2003
X Protocol Version 11, Revision 0, Release 6.6
Build Operating System: SuSE Linux [ELF] SuSE
Current Operating System: Linux linux 2.6.4-52-smp #1 SMP Wed Apr 7 02:11:20 UTC 2004 i686
Build Date: 23 August 2004
Changelog Date: 29 February 2004
Before reporting problems, check http://www.XFree86.Org/
to make sure that you have the latest version.
Module Loader present
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/XFree86.0.log", Time: Sun May 8 03:14:51 2005
(==) Using config file: "/etc/X11/XF86Config"
(WW) I810(0): Failed to set up write-combining range (0xf0000000,0x8000000)
Could not init font path element /usr/X11R6/lib/X11/fonts/local, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/CID, removing from list!
As a followup, this is the sequence of actions you need to take to run a remote X application:
2. Run cygwin. This establishes the environment.
3. At the cygwin bash prompt, enter the command startx. This will bring up the local X. An xterm window will open.
4. In the xterm window, ssh to the destination machine, with the "-Y" option. For example:
ssh -Y someuser@somehost
5. When you are logged into the remote system, you can run any X application, and it will display on your local system.
I think there are some security settings that prohibit the use of the X server from remote locations. In /etc/X11/xdm/Xservers you may have to remove '-nolisten tcp' and in /etc/X11/xdm/xdm-config you may need to comment-out the line 'DisplayManager.requestPort: 0'. Since I have never tried this, I can't tell which one ot those is really required.
As far as I can see, you are logged in as root. This way xauth assumes .Xauthority in /root. Try the command as user. I edited the above post. Have a look at the link first, maybe the xhost method will work after you applied the changes.