XDMCP Problems - Possible fix, please try

[Harold L Hunt II]

Andrew DeFaria wrote:
>> I never thought of forcing people to try to make a connection on the 
>> actual box itself.
>>
>> I ran the same command on my linux box and confirmed that it does work.
>>
>> I then edited (for my display manager and distribution, this will be 
>> different for you) /etc/kde3/kdm/kdmrc, changed the following:
>>
>> [XDMCP]
>> Enable=true
>>
>> to
>>
>> [XDMCP]
>> Enable=false
>>
>> Then I restarted kdm ('/etc/init.d/kdm restart' for my dist), and ran 
>> 'X -query %hostname% :1' again and waited about five minutes.  Before 
>> five minutes, I saw nothing: nothing special in the log files and no 
>> login screen on Ctrl-Alt-F8.  Then, after about five minutes, I saw 
>> that the /var/log/XFree86.1.log file (and the console from which I 
>> started X) both said:
>>
>> XDM: too many retransmissions
> 
> 
> Well you see that's sorta the problem. In my distro (SuSE 8.2) it's at 
> /opt/kde/share/config/kdm/kdmrc but the problem is that it already says 
> true! In mine is says:
> 
> [Xdmcp]
> Enable=true

kdm != xdm

kdm has a distinct configuration file from xdm's configuration file.

xdm.config lives in either /etc/X11/xdm/xdm.config or 
/usr/X11R6/lib/X11/xdm/xdm-config, where you will see something like the 
following:

! SECURITY: do not listen for XDMCP or Chooser requests
! Comment out this line if you want to manage X terminals with xdm
DisplayManager.requestPort:     0


So, you have to change that to:

! SECURITY: do not listen for XDMCP or Chooser requests
! Comment out this line if you want to manage X terminals with xdm
! DisplayManager.requestPort:     0

Then restart xdm and it should work.

Harold