Bug#959432: gdm3: server crashes after 90 seconds frozen on Wayland

[Francisco Gómez]

Package: gdm3
Version: 3.34.1-3
Severity: important

As I reported on #958025, after I upgraded my Sid from GNOME Shell 3.34 to 3.36
on my Surface Pro 5, every time I try to start up my system, GDM stays waiting
for 90 seconds with a frozen black screen and cursor, then it restarts itself.

I have `[debug] Enable=true` set. The system logs don't show up any useful
information (there's a 90 second gap, then it just goes into Xorg as it nothing
had happened), but I found a core dump that reports the following:

> Core was generated by `/usr/bin/Xwayland :1024 -rootless -terminate -accessx
-core -listen 4 -listen 5'.
> Program terminated with signal SIGABRT, Aborted.
> #0  0x00007f1cca11d7bb in ?? ()
> (gdb) bt
> #0  0x00007f1cca11d7bb in ?? ()
> #1  0x000000000a392000 in ?? ()
> #2  0x0000000000000000 in ?? ()

Might also be an issue with AT-SPI, but I have libatspi2.0-0 version 2.36.0-2
and the issue persists.



-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.3.18-surface (SMP w/4 CPU cores)
Kernel taint flags: TAINT_WARN, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gdm3 depends on:
ii  accountsservice                       0.6.55-1
ii  adduser                               3.118
ii  dconf-cli                             0.36.0-1
ii  dconf-gsettings-backend               0.36.0-1
ii  debconf [debconf-2.0]                 1.5.74
ii  gir1.2-gdm-1.0                        3.34.1-3
ii  gnome-session [x-session-manager]     3.36.0-2
ii  gnome-session-bin                     3.36.0-2+b1
ii  gnome-settings-daemon                 3.36.1-1
ii  gnome-shell                           3.36.1+git20200417-1
ii  gnome-terminal [x-terminal-emulator]  3.36.2-1
ii  gsettings-desktop-schemas             3.36.0-1
ii  libaccountsservice0                   0.6.55-1
ii  libaudit1                             1:2.8.5-3+b1
ii  libc6                                 2.30-4
ii  libcanberra-gtk3-0                    0.30-7
ii  libcanberra0                          0.30-7
ii  libgdk-pixbuf2.0-0                    2.40.0+dfsg-4
ii  libgdm1                               3.34.1-3
ii  libglib2.0-0                          2.64.2-1
ii  libglib2.0-bin                        2.64.2-1
ii  libgtk-3-0                            3.24.18-1
ii  libkeyutils1                          1.6.1-2
ii  libpam-modules                        1.3.1-5
ii  libpam-runtime                        1.3.1-5
ii  libpam-systemd                        245.5-2
ii  libpam0g                              1.3.1-5
ii  librsvg2-common                       2.48.3-1
ii  libselinux1                           3.0-1+b3
ii  libsystemd0                           245.5-2
ii  libwrap0                              7.6.q-30
ii  libx11-6                              2:1.6.9-2
ii  libxau6                               1:1.0.8-1+b2
ii  libxcb1                               1.14-2
ii  libxdmcp6                             1:1.1.2-3
ii  lsb-base                              11.1.0
ii  mutter [x-window-manager]             3.36.1+git20200419-1
ii  policykit-1                           0.105-26
ii  procps                                2:3.3.16-4
ii  ucf                                   3.0038+nmu1
ii  x11-common                            1:7.7+20
ii  x11-xserver-utils                     7.7+8
ii  xterm [x-terminal-emulator]           354-1

Versions of packages gdm3 recommends:
ii  at-spi2-core    2.36.0-2
ii  desktop-base    10.0.3
ii  x11-xkb-utils   7.7+5
ii  xserver-xephyr  2:1.20.8-2
ii  xserver-xorg    1:7.7+20
ii  zenity          3.32.0-5

Versions of packages gdm3 suggests:
pn  gnome-orca            <none>
pn  libpam-fprintd        <none>
ii  libpam-gnome-keyring  3.36.0-1

-- Configuration Files:
/etc/gdm3/daemon.conf changed [not included]

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