Description of problem: Recently on F-8 GDM stopped appearing in a vncts-ltsp-config xinetd started vnc session. The session starts fine, but in the vnc window i just get the black/white checkring that you normally get just before GDM starts. GDM doesn't start and present me with a login screen. Version-Release number of selected component (if applicable): gtk-vnc-0.3.2-2.fc8 vnc-server-4.1.2-23.fc8 gtk-vnc-python-0.3.2-2.fc8 vnc-libs-4.1.2-23.fc8 vnc-4.1.2-23.fc8 vnc-ltsp-config-4.0-4.fc8 gdm-2.20.3-1.fc8 fedorainfinity-gdm-theme-8.0.1-1.fc8 [same versions on both server and client - both fully updated F-8 nistalls.] How reproducible: Everytime Steps to Reproduce: 1.install vncts-ltsp-config on server, and start xinetd service 2.on local client do vncviewer -FullColour -via server.address.com localhost::5900 3. Actual results: vnc session starts, but the GDM login never appears. Expected results: vnc sessions starts, gdm appears Additional info: Not sure if this is a vnc or a gdm bug...
Corresponding lines in /var/log/messages: Feb 20 01:21:12 withnail xinetd[13680]: xinetd Version 2.3.14 started with libwrap loadavg labeled-networking options compiled in. Feb 20 01:21:12 withnail xinetd[13680]: Started working: 3 available services Feb 20 01:21:25 withnail xinetd[13680]: START: vnc pid=13686 from=::ffff:127.0.0.1 Feb 20 01:22:48 withnail ntpd[2278]: synchronized to 144.82.100.59, stratum 2 Feb 20 01:23:31 withnail xinetd[13680]: EXIT: vnc status=0 pid=13686 duration=126(sec)
The symptom(s) you're describing seem to indicate that you haven't enabled XDMCP in your LOGINMANAGER (gdm). By default, XDMCP is disabled, but is required for vnc-ltsp-config to work. Please confirm.
In gdmsetup I have enabled remote login .. so I think xdmcp is enabled.
xdmcp is indeed enabled (checked in /etc/gdm/custom.conf). However, what I found just now was that doing init 3 && init 5 to restart GDM fixed the problem. Not really sure what is going on, but I am confident this is not a bug in vncts-ltsp-config, so closing. Sorry for the noise.