Bug#658290: gdm-simple-slave[31794]: WARNING: Failed to set slave bus name on parent: Message did not receive a reply (timeout by message bus)

Paul Menzel pm.debian at googlemail.com
Wed Feb 1 20:42:27 UTC 2012


Package: gdm3
Version: 3.0.4-4
Severity: important

Dear Debian folks,


sometimes wanting to switch users, GDM does not start up for the
(second) user and the screen stays black with a curser _ blinking in the
top left corner.

The only way to get a working system again is to log in using for
example `ssh` and to issues `sudo service gdm3 restart`. This
unfortunately destroys the session of the already logged in user and
kills the programs.

I am not sure how to debug this problem. It is not reproducible but
happened two or three times already. You will find some excerpts from
log files ahead.

	$ dmesg
	[…]
	[18517.614833] packagekitd[15743]: segfault at 8 ip 0000000008057124 sp 00000000ffe577a0 error 4 in packagekitd[8048000+49000]
	[18921.802652] packagekitd[26960]: segfault at 8 ip 0000000008057124 sp 00000000fff569c0 error 4 in packagekitd[8048000+49000]
	[22110.984904] packagekitd[31607]: segfault at 8 ip 0000000008057124 sp 00000000ffe1a130 error 4 in packagekitd[8048000+49000]

This seems to be unrelated though and has happened for quite some time
already. This is also shown in the Linux kernel ring buffer attached to
my report #655934 against the Linux kernel image [1].

Looking at syslog there are a lot of warnings.

	Feb  1 19:32:33 joe gdm-simple-slave[23533]: WARNING: Failed to get value: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

Please find the compressed log file attached.

At 18:57 the system was resumed and at the popped up screen saver
»Switch user« was selected. Then the screen stayed black with a cursor
blinking in the top left corner at around 19:31 the GDM window appeared
and the could log in indicated by the PulseAudio messages. At around
20:09 this user was logged out (*not* switch user) and the screen stayed
black with the cursor blinking in the top left corner.

I guess that the `gdm-simple-slave` was somehow killed by the Linux
kernel although I could not find any messages supporting this. Please
find the output of `ps aux | grep -i gdm` also attached.

Debugging help is greatly appreciated.


Thanks,

Paul


[1] http://bugs.debian.org/655934 

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: i386 (x86_64)

Kernel: Linux 3.2.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages gdm3 depends on:
ii  accountsservice                             0.6.15-3
ii  adduser                                     3.113+nmu1
ii  awesome [x-window-manager]                  3.4.11-1
ii  dconf-gsettings-backend                     0.10.0-3
ii  debconf [debconf-2.0]                       1.5.41
ii  gconf2                                      3.2.3-1
ii  gnome-session [x-session-manager]           3.2.1-1
ii  gnome-session-bin                           3.2.1-1
ii  gnome-session-fallback [x-session-manager]  3.2.1-1
ii  gnome-terminal [x-terminal-emulator]        3.2.1-2
ii  gsettings-desktop-schemas                   3.2.0-2
ii  libaccountsservice0                         0.6.15-3
ii  libatk1.0-0                                 2.2.0-2
ii  libattr1                                    1:2.4.46-5
ii  libaudit0                                   1:1.7.18-1.1
ii  libc6                                       2.13-25
ii  libcairo-gobject2                           1.10.2-6.2
ii  libcairo2                                   1.10.2-6.2
ii  libcanberra-gtk3-0                          0.28-3
ii  libcanberra0                                0.28-3
ii  libdbus-1-3                                 1.4.16-1
ii  libdbus-glib-1-2                            0.98-1
ii  libfontconfig1                              2.8.0-3.1
ii  libfreetype6                                2.4.8-1
ii  libgconf2-4                                 3.2.3-1
ii  libgdk-pixbuf2.0-0                          2.24.0-2
ii  libglib2.0-0                                2.30.2-6
ii  libglib2.0-bin                              2.30.2-6
ii  libgtk-3-0                                  3.2.3-1
ii  libpam-modules                              1.1.3-7
ii  libpam-runtime                              1.1.3-7
ii  libpam0g                                    1.1.3-7
ii  libpango1.0-0                               1.29.4-2
ii  librsvg2-common                             2.34.2-2
ii  libselinux1                                 2.1.0-4.1
ii  libupower-glib1                             0.9.15-1
ii  libwrap0                                    7.6.q-22
ii  libx11-6                                    2:1.4.4-4
ii  libxau6                                     1:1.0.6-4
ii  libxdmcp6                                   1:1.1.0-4
ii  libxklavier16                               5.1-3
ii  libxrandr2                                  2:1.3.2-2
ii  lsb-base                                    3.2-28.1
ii  metacity [x-window-manager]                 1:2.34.1-2
ii  policykit-1-gnome                           0.105-2
ii  upower                                      0.9.15-1
ii  xterm [x-terminal-emulator]                 276-2

Versions of packages gdm3 recommends:
ii  at-spi                 1.32.0-1
ii  desktop-base           6.0.7
ii  gnome-icon-theme       3.2.1.2-1
ii  gnome-power-manager    3.2.1-2
ii  gnome-settings-daemon  3.2.2-2
ii  x11-xkb-utils          7.6+4
ii  xserver-xephyr         2:1.11.3.901-2
ii  xserver-xorg           1:7.6+11
ii  zenity                 3.2.0-1

Versions of packages gdm3 suggests:
ii  gnome-mag             1:0.16.3-1
ii  gnome-orca            2.30.2-2
ii  gok                   2.30.0-1
ii  libpam-gnome-keyring  3.2.2-2
ii  metacity              1:2.34.1-2

-- debconf information:
* shared/default-x-display-manager: gdm3
  gdm3/daemon_name: /usr/sbin/gdm3
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