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Appendix D. Troubleshooting Your Installation of Red Hat Enterprise Linux 47

If you experience such an error, ﬁrst try to download any available errata for anaconda. Errata can be

found at:

http://www.redhat.com/support/errata/

The anaconda website may also be a useful reference and can be found online at:

http://rhlinux.redhat.com/anaconda/

You can also search for bug reports related to this problem. To search Red Hat’s bug tracking system,

go to:

http://bugzilla.redhat.com/bugzilla/

Finally, if you are still facing problems related to this error, register your product and contact our

support team. To register your product, go to:

http://www.redhat.com/apps/activate/

D.3. Problems After Installation

D.3.1. Remote Graphical Desktops and XDMCP

If you have installed the X Window System and would like to log in to your Red Hat Enterprise Linux

system using a graphical login manager, enable the X Display Manager Control Protocol (XDMCP).

This protocol allows users to remotely log in to a desktop environment from any X Window Sys-

tem compatible client (such as a network-connected workstation or X terminal). To enable remote

Enterprise Linux system with a text editor such as vi or nano:

[xdmcp]

Enable=false

Edit the line to read Enable=true, save the ﬁle, and exit the text editor. Switch to runlevel 5 to start

the X server:

/sbin/init 5

From the client machine, start remote X session using X. For example:

X :1 -query s390vm.example.com

The command connects to the remote X server via XDMCP (replace s390vm.example.com with

the hostname of the remote X server) and displays the remote graphical login screen on display :1 of

the client system (usually accessible by using the [Ctrl]-[Alt]-[F8] key combination).

You may also access remote desktop sessions using a nested X server, which opens the remote

desktop as a window in your current X session. Xnest allows users to open a remote desktop nested

within their local X session. For example, run Xnest using the following command, replacing

s390vm.example.com with the hostname of the remote X server:

Xnest :1 -query s390vm.example.com

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Red Hat ENTERPRISE LINUX AS 2.1 - Guida di Installazione Pagina 55