Your message dated Thu, 6 Nov 2025 19:02:35 -0500
with message-id
<CAAajCMbQjMZ7G_Z3xrQWuNDPWLjuAM169oCkMRCqdeKond=t...@mail.gmail.com>
and subject line closing old gdm3 bugs
has caused the Debian Bug report #760035,
regarding gdm3 listen XDMCP always on udp6 177
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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immediately.)
--
760035: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=760035
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: gdm3
Version: 3.4.1-8
Severity: normal
Tags: ipv6
Hello.
Gdm3 always listens XDMCP on udp6 but not on udp, even if udp6 was disabled in
system.
root@hme:/home/sergey# netstat -anup | grep 177
udp6 0 0 :::177 :::*
3878/gdm3
root@hme:/home/sergey# ps -ef | grep 3878
root 3878 1 0 08:30 ? 00:00:00 /usr/sbin/gdm3
root 4051 3878 0 08:30 ? 00:00:00 /usr/lib/gdm3/gdm-simple-slave
--display-id /org/gnome/DisplayManager/Display1
root@hme:/home/sergey# cat /etc/sysctl.conf
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv6.conf.eth0.disable_ipv6 = 1
root@hme:/home/sergey# cat /etc/gdm3/daemon.conf | grep -v \#
[daemon]
[security]
DisallowTCP=false
[xdmcp]
Enable=true
MaxPending=4
MaxSessions=16
MaxWait=30
MaxWaitIndirect=30
PingIntervalSeconds=60
MaxPendingIndirect=4
DisplaysPerHost=2
HonorIndirect=true
Port=177
[greeter]
[chooser]
[debug]
-- System Information:
Debian Release: 7.6
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.2.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages gdm3 depends on:
ii accountsservice 0.6.21-8
ii adduser 3.113+nmu3
ii dconf-gsettings-backend 0.12.1-3
ii dconf-tools 0.12.1-3
ii debconf [debconf-2.0] 1.5.49
ii dpkg 1.16.15
ii gir1.2-freedesktop 1.32.1-1
ii gir1.2-glib-2.0 1.32.1-1
ii gnome-session [x-session-manager] 3.4.2.1-4
ii gnome-session-bin 3.4.2.1-4
ii gnome-session-fallback [x-session-manage 3.4.2.1-4
ii gnome-settings-daemon 3.4.2+git20121218.7c1322-3+deb7u3
ii gnome-terminal [x-terminal-emulator] 3.4.1.1-2
ii gsettings-desktop-schemas 3.4.2-3
ii libaccountsservice0 0.6.21-8
ii libatk1.0-0 2.4.0-2
ii libattr1 1:2.4.46-8
ii libaudit0 1:1.7.18-1.1
ii libc6 2.13-38+deb7u4
ii libcairo-gobject2 1.12.2-3
ii libcairo2 1.12.2-3
ii libcanberra-gtk3-0 0.28-6
ii libcanberra0 0.28-6
ii libdbus-1-3 1.6.8-1+deb7u3
ii libdbus-glib-1-2 0.100.2-1
ii libfontconfig1 2.9.0-7.1
ii libgdk-pixbuf2.0-0 2.26.1-1
ii libglib2.0-0 2.33.12+really2.32.4-5
ii libglib2.0-bin 2.33.12+really2.32.4-5
ii libgtk-3-0 3.4.2-7
ii libpam-modules 1.1.3-7.1
ii libpam-runtime 1.1.3-7.1
ii libpam0g 1.1.3-7.1
ii libpango1.0-0 1.30.0-1
ii librsvg2-common 2.36.1-2
ii libselinux1 2.1.9-5
ii libupower-glib1 0.9.17-1
ii libwrap0 7.6.q-24
ii libx11-6 2:1.5.0-1+deb7u1
ii libxau6 1:1.0.7-1
ii libxdmcp6 1:1.1.1-1
ii libxklavier16 5.2.1-1
ii libxrandr2 2:1.3.2-2+deb7u1
ii lsb-base 4.1+Debian8+deb7u1
ii metacity [x-window-manager] 1:2.34.3-4
ii policykit-1-gnome 0.105-2
ii upower 0.9.17-1
ii x11-common 1:7.7+3~deb7u1
ii x11-xserver-utils 7.7~3
ii xterm [x-terminal-emulator] 278-4
Versions of packages gdm3 recommends:
ii at-spi2-core 2.5.3-2
ii desktop-base 7.0.3
ii gnome-icon-theme 3.4.0-2
ii gnome-icon-theme-symbolic 3.4.0-2
ii x11-xkb-utils 7.7~1
ii xserver-xephyr 2:1.12.4-6+deb7u2
ii xserver-xorg 1:7.7+3~deb7u1
ii zenity 3.4.0-2
Versions of packages gdm3 suggests:
ii gnome-orca 3.4.2-2
ii gnome-shell 3.4.2-7+deb7u1
pn gok <none>
ii libpam-gnome-keyring 3.4.1-5
-- Configuration Files:
/etc/gdm3/daemon.conf changed:
[daemon]
[security]
DisallowTCP=false
[xdmcp]
Enable=true
MaxPending=4
MaxSessions=16
MaxWait=30
MaxWaitIndirect=30
PingIntervalSeconds=60
MaxPendingIndirect=4
DisplaysPerHost=2
HonorIndirect=true
Port=177
[greeter]
[chooser]
[debug]
-- debconf information:
* shared/default-x-display-manager: gdm3
gdm3/daemon_name: /usr/sbin/gdm3
--- End Message ---
--- Begin Message ---
There have been many changes to Debian since this bug was originally
reported. If you are still experiencing this issue with Debian 13 (or
with Debian 12 or Testing or Unstable), please report a new bug.
Thank you,
Jeremy Bícha
--- End Message ---
