Bug#904973: gdm3: crashes after every suspend cycle

[Daniel Blaschke]

Package: gdm3
Version: 3.22.3-3+deb9u1
Severity: important

Dear Maintainer,

gdm crashes every time the PC goes to sleep while a user is logged in, locking
out every other user until I reboot.
steps to reproduce (tested on an intel broadwell laptop as well as a core-2 due
desktop with nvidia graphics running the nouveau driver):
log in user A
while user A is logged in, close laptop lid or otherwise go to suspend/sleep
wake up PC: user A is still logged in and can access his/her session on tty 2,
but gdm has crashed on tty1, i.e. one only sees the lock screen, hitting enter
briefly flickers the list of users available for login, but gdm immediately
returns to the lock screen and it is impossible to log in anyone anymore (this
also applies to user A after he logs out)
Only rebooting helps
I also tried
sudo systemctl restart gdm3
but this only works 1 out of 10 times, the other times systemd tries in vain in
an infinite loop to restart gdm freeying the system and requiring a hard reset.

Thanks,
Daniel



-- System Information:
Debian Release: 9.5
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-7-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), LANGUAGE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gdm3 depends on:
ii  accountsservice                       0.6.43-1
ii  adduser                               3.115
ii  dconf-cli                             0.26.0-2+b1
ii  dconf-gsettings-backend               0.26.0-2+b1
ii  debconf [debconf-2.0]                 1.5.61
ii  gir1.2-gdm-1.0                        3.22.3-3+deb9u1
ii  gnome-session [x-session-manager]     3.22.3-1
ii  gnome-session-bin                     3.22.3-1
ii  gnome-settings-daemon                 3.22.2-2+deb9u2
ii  gnome-shell                           3.22.3-3
ii  gnome-terminal [x-terminal-emulator]  3.22.2-1
ii  gsettings-desktop-schemas             3.22.0-1
ii  konsole [x-terminal-emulator]         4:16.12.0-4
ii  libaccountsservice0                   0.6.43-1
ii  libaudit1                             1:2.6.7-2
ii  libc6                                 2.24-11+deb9u3
ii  libcanberra-gtk3-0                    0.30-3
ii  libcanberra0                          0.30-3
ii  libgdk-pixbuf2.0-0                    2.36.5-2+deb9u2
ii  libgdm1                               3.22.3-3+deb9u1
ii  libglib2.0-0                          2.50.3-2
ii  libglib2.0-bin                        2.50.3-2
ii  libgtk-3-0                            3.22.11-1
ii  libkeyutils1                          1.5.9-9
ii  libpam-modules                        1.1.8-3.6
ii  libpam-runtime                        1.1.8-3.6
ii  libpam-systemd                        232-25+deb9u4
ii  libpam0g                              1.1.8-3.6
ii  librsvg2-common                       2.40.16-1+b1
ii  libselinux1                           2.6-3+b3
ii  libsystemd0                           232-25+deb9u4
ii  libwrap0                              7.6.q-26
ii  libx11-6                              2:1.6.4-3
ii  libxau6                               1:1.0.8-1
ii  libxcb1                               1.12-1
ii  libxdmcp6                             1:1.1.2-3
ii  lsb-base                              9.20161125
ii  metacity [x-window-manager]           1:3.22.1-1
ii  mutter [x-window-manager]             3.22.3-2
ii  policykit-1                           0.105-18
ii  ucf                                   3.0036
ii  x11-common                            1:7.7+19
ii  x11-xserver-utils                     7.7+7+b1
ii  xfce4-session [x-session-manager]     4.12.1-5
ii  xfwm4 [x-window-manager]              4.12.4-1
ii  xterm [x-terminal-emulator]           327-2

Versions of packages gdm3 recommends:
ii  at-spi2-core    2.22.0-6+deb9u1
ii  desktop-base    9.0.2+deb9u1
ii  x11-xkb-utils   7.7+3+b1
ii  xserver-xephyr  2:1.19.2-1+deb9u2
ii  xserver-xorg    1:7.7+19
ii  zenity          3.22.0-1+b1

Versions of packages gdm3 suggests:
ii  gnome-orca            3.22.2-3
ii  libpam-gnome-keyring  3.20.0-3

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