[mdlug] Ubuntu 11.10 lightdm xdmcp

[Jeff Hanson]

All I can think of is to check environment variables on the client.  I
normally don't do remote X (I prefer X2Go) and I use ssh.  I know
"X11Forwarding yes" must be set in /etc/ssh/sshd_config in that case.

On 1/25/12, Scott Webster Wood <TreII28 at yahoo.com> wrote:
> OK, I made it one step further and found that the original website I
> referred to only gave one of two options that needed to enabled.
> Apparently  you need both of these in lightdm.conf:
>
> [XDMCPServer]
> enabled=true
>
> [SeatDefaults]
> xserver-allow-tcp=true
>
> However it's still not connecting - I am however at least seeing the
> poort 6000 listeners and getting responses in the lightdm log from the
> cygwin XWin query:
>
> [+2243.23s] DEBUG: Got Query(authentication_names=[])
> [+2243.23s] DEBUG: Send Willing(authentication_name='' hostname=''
> status='')
> [+2244.68s] DEBUG: Got Request(display_number=0 connections=[(0,
> C0A80144) (0, C0A80223) (6, FE80000000000000B0C56E092289C2DE) (6,
> FE8000000000000020952F1EC60D885B) (6, FE8000000000000000005EFEC0A80144)
> (6, FE8000000000000000005EFEC0A80223) (6,
> 2001000041379E76088B3A669D055B2A) (6, FE80000000000000088B3A669D055B2A)]
> authentication_name='' authentication_data=
> authorization_names=['MIT-MAGIC-COOKIE-1' 'XDM-AUTHORIZATION-1']
> manufacturer_display_id='')
> [+2244.69s] DEBUG: Send Accept(session_id=46007 authentication_name=''
> authentication_data= authorization_name='MIT-MAGIC-COOKIE-1'
> authorization_data=7FD9A866E1E8A688D034273307F2B644)
> [+2244.69s] DEBUG: Got Manage(session_id=46007 display_number=0
> display_class='MIT-unspecified')
> [+2244.69s] DEBUG: Starting seat
> [+2244.69s] DEBUG: Starting new display for greeter
> [+2244.69s] DEBUG: Connecting to XServer
> 2001:0:4137:9e76:88b:3a66:9d05:5b2a:0
> [+2244.69s] DEBUG: Error connecting to XServer
> 2001:0:4137:9e76:88b:3a66:9d05:5b2a:0
> [+2244.69s] DEBUG: Send Failed(session_id=46007 status='Failed to
> connect to display :0')
> [+2244.70s] DEBUG: Timing out unmanaged session 46007
>
> any ideas what is missing?
> On 1/25/2012 11:30 AM, Jeff Hanson wrote:
>> Check to see if the port is being listened to:
>> http://www.cyberciti.biz/faq/linux-unix-open-ports/
>>
>> On 1/25/12, Scott Webster Wood<TreII28 at yahoo.com>  wrote:
>>> I'm trying to setup xdmcp on my new unbuntu install but it appears that
>>> they swapped out the default gdm for the new lightdm. I found the option
>>> that supposedly enables it to listen for xdmcp calls and see in the log
>>> that it at least claims to be prepared to receive them, but when I try
>>> to connect with my cygwin box, it can't get a connection. I also tried
>>> telnet'ing to port 6000 with no response. Is there something I'm missing
>>> like a hosts.allow entry or something and if so what is the syntax? Is
>>> there any kind of firewall rules in ubuntu 11? I got no response with an
>>> iptables query.
>>>
>>> SW
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