Bug#525430: X crashes when using gdmchooser to initiate XDMCP connection.

Seb James seb at esfnet.co.uk
Fri Apr 24 14:36:44 UTC 2009


Package: gdm
Version: 2.20.7-4lenny1
Severity: important

This bug occurs when using the radeonhd X.org driver on my Lenny 
machine, dellbuntu. It does not occur when using the radeon X.org driver.

Steps:
1) I run the gdmchooser from the gdm login screen on my Lenny machine, 
which correctly lists the other machines on my network (circle, 
octagon, ubuntu804). The Lenny machine is called "dellbuntu" (guess 
where I bought it).

2) I choose to connect to either octagon or circle. I see the X.org X 
appear, then the white "swirly disc" cursor of the machine I am 
connecting to for a moment, then X crashes and I am returned to the
Lenny gdm screen.

I have tried connecting to both a Debian Etch machine (circle), and to 
two Ubuntu 8.04 machines (octagon and ubuntu804). One of the Ubuntu 8.04 
machines (ubuntu804, which is a vmware vm on circle) works. The other 
two machines show this problem.

I have tried using X to directly connect to circle or octagon from 
dellbuntu, the Lenny machine, e.g.:

 X -query circle :1

which works correctly.

On circle (Debian Etch), when I try to connect from dellbuntu via 
gdmchooser, /var/log/daemon.log shows this:

Apr 24 15:02:24 circle gdm[31902]: gdm_slave_xioerror_handler: Fatal X 
error - Restarting dellbuntu.esfnet:0

On octagon (Ubuntu 8.04), a failed connection from dellbuntu via 
gdmchooser gives this in /var/log/daemon.log (looks like I have at some 
point upped the debugging on octagon). Note that dellbuntu.esfnet has 
IP 192.168.0.11:

Apr 24 15:06:38 octagon gdm[6158]: DEBUG: decode_packet: GIOCondition 1
Apr 24 15:06:38 octagon gdm[6158]: DEBUG: XDMCP: Received opcode 
BROADCAST_QUERY from client ::ffff:192.168.0.11 : 35715
Apr 24 15:06:38 octagon gdm[6158]: DEBUG: gdm_xdmcp_host_allow: 
client->hostname is 192.168.0.11
Apr 24 15:06:38 octagon gdm[6158]: DEBUG: XDMCP: Sending WILLING to 
::ffff:192.168.0.11
Apr 24 15:06:40 octagon gdm[6158]: DEBUG: decode_packet: GIOCondition 1
Apr 24 15:06:40 octagon gdm[6158]: DEBUG: XDMCP: Received opcode 
BROADCAST_QUERY from client ::ffff:192.168.0.11 : 35715
Apr 24 15:06:40 octagon gdm[6158]: DEBUG: gdm_xdmcp_host_allow: 
client->hostname is 192.168.0.11
Apr 24 15:06:40 octagon gdm[6158]: DEBUG: XDMCP: Sending WILLING to 
::ffff:192.168.0.11
Apr 24 15:06:41 octagon gdm[6158]: DEBUG: decode_packet: GIOCondition 1
Apr 24 15:06:41 octagon gdm[6158]: DEBUG: XDMCP: Received opcode QUERY 
from client ::ffff:192.168.0.11 : 36208
Apr 24 15:06:41 octagon gdm[6158]: DEBUG: gdm_xdmcp_host_allow: 
client->hostname is 192.168.0.11
Apr 24 15:06:41 octagon gdm[6158]: DEBUG: XDMCP: Sending WILLING to 
::ffff:192.168.0.11
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: decode_packet: GIOCondition 1
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: XDMCP: Received opcode REQUEST 
from client ::ffff:192.168.0.11 : 36208
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_xdmcp_handle_request: Got 
REQUEST from ::ffff:192.168.0.11
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_xdmcp_host_allow: 
client->hostname is 192.168.0.11
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_xdmcp_handle_request: 
xdmcp_pending=0, MaxPending=4, xdmcp_sessions=0, MaxSessions=16, 
ManufacturerID=
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: 
gdm_xdmcp_display_dispose_check (192.168.0.11:0)
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: Attempting to parse key 
string: security/AllowRemoteAutoLogin=false
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_auth_secure_display: 
Setting up access for 192.168.0.11:0
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: Attempting to parse key 
string: daemon/ServAuthDir=/var/lib/gdm
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_auth_secure_display: 
Setting up access
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: Attempting to parse key 
string: debug/Enable=false
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_auth_secure_display: 
Setting up access for 192.168.0.11:0 - 1 entries
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_xdmcp_display_alloc: 
display=192.168.0.11:0, session id=1099180553, xdmcp_pending=1
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: XDMCP: Sending ACCEPT to 
::ffff:192.168.0.11 with SessionID=1099180553
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: decode_packet: GIOCondition 1
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: XDMCP: Received opcode MANAGE 
from client ::ffff:192.168.0.11 : 36208
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_xdmcp_handle_manage: Got 
MANAGE from ::ffff:192.168.0.11
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_xdmcp_host_allow: 
client->hostname is 192.168.0.11
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: Attempting to parse key 
string: debug/Enable=false
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_xdmcp-handle_manage: Got 
display=0, SessionID=1099180553 Class=MIT-unspecified from 
MIT-unspecified0.11
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_xdmcp_handle_manage: 
Looked up 192.168.0.11:0
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_choose_indirect_lookup: 
Host ::ffff:192.168.0.11 not found
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_forward_query_lookup: Host 
::ffff:192.168.0.11 not found
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_display_manage: Managing 
192.168.0.11:0
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: loop check: last_start 0, 
last_loop 0, now: 1240582002, retry_count: 0
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: Resetting counts for loop of 
death detection
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: Forking slave process
Apr 24 15:06:42 octagon gdm[7080]: DEBUG: Attempting to parse key 
string: xdmcp/PingIntervalSeconds=15
Apr 24 15:06:42 octagon gdm[7080]: DEBUG: gdm_slave_start: Starting 
slave process for 192.168.0.11:0
Apr 24 15:06:42 octagon gdm[7080]: DEBUG: gdm_slave_start: Loop Thingie
Apr 24 15:06:42 octagon gdm[7080]: DEBUG: Attempting to parse key 
string: xdmcp/PingIntervalSeconds=15
Apr 24 15:06:42 octagon gdm[7080]: DEBUG: Attempting to parse key 
string: daemon/AutomaticLogin=
Apr 24 15:06:42 octagon gdm[7080]: DEBUG: Attempting to parse key 
string: daemon/TimedLogin=
Apr 24 15:06:42 octagon gdm[7080]: DEBUG: Attempting to parse key 
string: daemon/AutomaticLoginEnable=false
Apr 24 15:06:42 octagon gdm[7080]: DEBUG: Attempting to parse key 
string: daemon/TimedLoginEnable=false
Apr 24 15:06:42 octagon gdm[7080]: DEBUG: gdm_slave_run: Opening display 
192.168.0.11:0
Apr 24 15:06:42 octagon gdm[6158]: DEBUG: gdm_display_manage: Forked 
slave: 7080
Apr 24 15:06:42 octagon gdm[7080]: DEBUG: gdm_slave_run: Sleeping 1 on a 
retry
Apr 24 15:06:43 octagon gdm[7080]: DEBUG: gdm_slave_run: Sleeping 3 on a 
retry
Apr 24 15:06:46 octagon gdm[7080]: DEBUG: gdm_slave_run: Sleeping 5 on a 
retry
Apr 24 15:06:51 octagon gdm[7080]: DEBUG: gdm_slave_run: Sleeping 7 on a 
retry


Thanks for reading!

Seb James

-- System Information:
Debian Release: 5.0.1
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages gdm depends on:
ii  adduser                3.110             add and remove users and groups
ii  debconf [debconf-2.0]  1.5.24            Debian configuration management sy
ii  gksu                   2.0.0-8           graphical frontend to su
ii  gnome-session [x-sessi 2.22.3-2          The GNOME 2 Session Manager
ii  gnome-terminal [x-term 2.22.3-3          The GNOME 2 terminal emulator appl
ii  libart-2.0-2           2.3.20-2          Library of functions for 2D graphi
ii  libatk1.0-0            1.22.0-1          The ATK accessibility toolkit
ii  libattr1               1:2.4.43-2        Extended attribute shared library
ii  libc6                  2.7-18            GNU C Library: Shared libraries
ii  libcairo2              1.6.4-7           The Cairo 2D vector graphics libra
ii  libdbus-1-3            1.2.1-5           simple interprocess messaging syst
ii  libdbus-glib-1-2       0.76-1            simple interprocess messaging syst
ii  libdmx1                1:1.0.2-3         X11 Distributed Multihead extensio
ii  libfontconfig1         2.6.0-3           generic font configuration library
ii  libfreetype6           2.3.7-2           FreeType 2 font engine, shared lib
ii  libglade2-0            1:2.6.2-1         library to load .glade files at ru
ii  libglib2.0-0           2.16.6-1+lenny1   The GLib library of C routines
ii  libgnomecanvas2-0      2.20.1.1-1        A powerful object-oriented display
ii  libgtk2.0-0            2.12.12-1~lenny1  The GTK+ graphical user interface 
ii  libpam-modules         1.0.1-5+lenny1    Pluggable Authentication Modules f
ii  libpam-runtime         1.0.1-5+lenny1    Runtime support for the PAM librar
ii  libpam0g               1.0.1-5+lenny1    Pluggable Authentication Modules l
ii  libpango1.0-0          1.20.5-3          Layout and rendering of internatio
ii  librsvg2-2             2.22.2-2lenny1    SAX-based renderer library for SVG
ii  librsvg2-common        2.22.2-2lenny1    SAX-based renderer library for SVG
ii  libselinux1            2.0.65-5          SELinux shared libraries
ii  libwrap0               7.6.q-16          Wietse Venema's TCP wrappers libra
ii  libx11-6               2:1.1.5-2         X11 client-side library
ii  libxau6                1:1.0.3-3         X11 authorisation library
ii  libxdmcp6              1:1.0.2-3         X11 Display Manager Control Protoc
ii  libxext6               2:1.0.4-1         X11 miscellaneous extension librar
ii  libxi6                 2:1.1.4-1         X11 Input extension library
ii  libxinerama1           2:1.0.3-2         X11 Xinerama extension library
ii  libxml2                2.6.32.dfsg-5     GNOME XML library
ii  lsb-base               3.2-20            Linux Standard Base 3.2 init scrip
ii  metacity [x-window-man 1:2.22.0-2        A lightweight GTK2 based Window Ma
ii  twm [x-window-manager] 1:1.0.4-2         Tab window manager
ii  xterm [x-terminal-emul 235-2             X terminal emulator
ii  zlib1g                 1:1.2.3.3.dfsg-12 compression library - runtime

Versions of packages gdm recommends:
ii  gdm-themes                   0.6.1       Themes for the GNOME Display Manag
ii  whiptail                     0.52.2-11.3 Displays user-friendly dialog boxe
pn  xserver-xephyr | xnest       <none>      (no description available)
ii  xserver-xorg                 1:7.3+18    the X.Org X server
ii  zenity                       2.22.1-2    Display graphical dialog boxes fro

Versions of packages gdm suggests:
ii  libpam-gnome-keyring          2.22.3-2   PAM module to unlock the GNOME key
ii  locales                       2.7-18     GNU C Library: National Language (
ii  pm-utils                      1.1.2.4-1  utilities and scripts for power ma

-- debconf information:
  gdm/daemon_name: /usr/bin/gdm
* shared/default-x-display-manager: gdm







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