linuxmint 18.1 and XDMCP

[tal_segev]

Hi there,

I'm trying to enable XDMCP on linuxmint 18.1;

my actions:
1) I've changed removed "-nolisten tcp" at /etc/X11/xinit/xserverrc

1.1) I even tried adding "-port 177" to /etc/X11/xinit/xserverrc

2) added the following to /etc/mdm/mdm.conf

[daemon]
RemoteGreeter=/usr/lib/mdm/mdmlogin

[xdmcp]
Enable=true
Port=177

[SeatDefaults]
xserver-allow-tcp=true
xdmcp-port=177


All my attempts, to enable XDMCP, failed.

Code: Select all

$ Xnest :1 -query 127.0.0.1 

new display is opened, but stay blank.
after a wile I'm getting the following:

XDM: too many retransmissions, declaring session dead
1 XSELINUXs still allocated at reset
SCREEN: 0 objects of 152 bytes = 0 total bytes 0 private allocs
COLORMAP: 0 objects of 8 bytes = 0 total bytes 0 private allocs
DEVICE: 0 objects of 96 bytes = 0 total bytes 0 private allocs
CLIENT: 0 objects of 56 bytes = 0 total bytes 0 private allocs
WINDOW: 0 objects of 72 bytes = 0 total bytes 0 private allocs
PIXMAP: 1 objects of 24 bytes = 24 total bytes 0 private allocs
GC: 0 objects of 24 bytes = 0 total bytes 0 private allocs
CURSOR: 0 objects of 8 bytes = 0 total bytes 0 private allocs
TOTAL: 1 objects, 24 bytes, 0 allocs
1 PIXMAPs still allocated at reset
PIXMAP: 1 objects of 24 bytes = 24 total bytes 0 private allocs
GC: 0 objects of 24 bytes = 0 total bytes 0 private allocs
CURSOR: 0 objects of 8 bytes = 0 total bytes 0 private allocs
TOTAL: 1 objects, 24 bytes, 0 allocs
1 DAMAGEs still allocated at reset
TOTAL: 0 objects, 0 bytes, 0 allocs

My suspicion is, UDP port 177 is not open.

Code: Select all

$ netstat -na | grep 177

No UDP IP4 and/or IP6 are open

I'm out of ideas, any suggestions ?

Thanks,
Tal