Jacques: What version of GDM are you using? Does upgrading to the latest (2.18.0) help? Note bug 354746: http://bugzilla.gnome.org/show_bug.cgi?id=354746 Seems some have reported that the "Deny TCP connections to the Xserver" setting can disable XDMCP. Does changing this setting make a difference? Are you using IPv6? There have been some reports that XDMCP has some issues with using IPv6. Note a bugfix went into 2.18.0 that fixes a problem in this area. There's an XDMCP patch that has been in this bug for a long time but not yet applied to GDM. Does using it make a difference? http://bugzilla.gnome.org/show_bug.cgi?id=164628 Hopefully some of these ideas help. Let me know. If not, then I'd recommend turning on Enable=true in the [debug] section of your GDM configuration and sharing with us the error messages that get sent to your system log (/var/log/messages or /var/adm/messages). You only need to share the debug messages that show the XDMCP traffic that should be at the end of the log immediately after you create the error situation. Note you need to restart GDM (gdm-restart) after changing the configuration for it to take effect, or you can run this command if you don't want to restart: gdmflexiserver --command="UPDATE_CONFIG debug/Enable" Brian
I've experienced trouble with Gdm in a X-terminals network (Slackware 11, Dropline Gnome 2.16.1). I never had any XDMCP problems before with a 2.4 kernel on a 20 terminals network. After upgrading the server to 2.6.17.13, I've found that Gdm needs to be launched before the terminals send xdmcp requests. If there is already xdmcp requests when it starts, it takes a long time to come, and the terminals don't receive any login window. Trying to log in fails. Trying with a 2.6.18 kernel is not better. It seems that it's worse when clients are running a 2.4 kernel but anyway, 4 PCs running a 2.6 kernel before Gdm starts make it crash. I've experienced that on 3 similar network installations. Tryed manygdm options unsuccessfully.BTW I could'nt reproduce it at home with Xnest requests. Thanks for your help. _______________________________________________ gdm-list mailing list gdm-list gnome org http://mail.gnome.org/mailman/listinfo/gdm-list