Another way to trigger this crash:
1. Select any username
2. Hit cancel
3. Select any username
-> gdm-simple-server segfaults and another xserver is started on the next
available vt (vt8 in my case) along with gdm-simple-slave, because the old
xserver is still running on vt7 (showing the login wallpaper and movable mouse
cursor, but nothing else).
k...@tezra:~$ ps aux | grep gdm
root 1279 0.0 0.0 70560 3656 ?Ss 20:16 0:00 gdm-binary
root 1425 1.6 0.4 120976 18980 tty7 Ss+ 20:16 0:02 /usr/bin/X :0
-br -verbose -auth /var/run/gdm/auth-for-gdm-bXaEjF/database -nolisten tcp vt7
gdm 1872 0.0 0.0 26240 828 ?S20:16 0:00
/usr/bin/dbus-launch --exit-with-session
gdm 1873 0.0 0.0 23532 964 ?Ss 20:16 0:00
/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
gdm 1893 0.0 0.1 152612 6876 ?Ssl 20:16 0:00
/usr/bin/gnome-session --autostart=/usr/share/gdm/autostart/LoginWindow/
gdm 1915 0.0 0.1 46344 6092 ?S20:16 0:00
/usr/lib/libgconf2-4/gconfd-2
gdm 1918 0.1 0.2 220756 10988 ?Ssl 20:16 0:00
/usr/lib/gnome-settings-daemon/gnome-settings-daemon
--gconf-prefix=/apps/gdm/simple-greeter/settings-manager-plugins
gdm 1925 0.0 0.0 39364 2288 ?S20:16 0:00
/usr/lib/gvfs/gvfsd
gdm 1927 0.0 0.1 148512 6796 ?S20:16 0:00
/usr/lib/notify-osd/notify-osd
gdm 1928 0.0 0.2 202028 10712 ?S20:16 0:00 metacity
gdm 1930 0.0 0.2 153192 8264 ?S20:16 0:00
gnome-power-manager
root 2033 0.0 0.1 85024 4428 ?S20:16 0:00
/usr/lib/gdm/gdm-simple-slave --display-id /org/gnome/DisplayManager/Display2
root 2035 6.0 0.8 148408 34424 tty8 Rs+ 20:16 0:08 /usr/bin/X :1
-br -verbose -auth /var/run/gdm/auth-for-gdm-PASdIl/database -nolisten tcp
gdm 2059 0.0 0.0 26240 828 ?S20:16 0:00
/usr/bin/dbus-launch --exit-with-session
root 2081 0.0 0.1 129196 5212 ?S20:16 0:00
/usr/lib/gdm/gdm-session-worker
dmesg:
[ 39.897213] [drm] TV-25: set mode NTSC 480i 0
[ 47.279136] __ratelimit: 18 callbacks suppressed
[ 47.279140] gdm-simple-slav[1401]: segfault at 0 ip 7fe862c3b6ae sp
7fffb2c2d260 error 4 in libX11.so.6.3.0[7fe862bf1000+132000]
[ 47.279157] Process 1401(gdm-simple-slav) has RLIMIT_CORE set to 0
[ 47.279158] Aborting core
[ 47.284114] gdm-session-wor[2021]: segfault at 0 ip 7f9b07b9f0a5 sp
7fffdfdf8d50 error 4 in libpam.so.0.82.1[7f9b07b99000+c000]
[ 47.284133] Process 2021(gdm-session-wor) has RLIMIT_CORE set to 0
[ 47.284134] Aborting core
[ 47.327972] Xorg[2032]: segfault at 0 ip 7f0f96eef191 sp
7fffe6f19968 error 4 in libc-2.11.1.so[7f0f96eaa000+175000]
[ 47.327984] Process 2032(Xorg) has RLIMIT_CORE set to 0
[ 47.327985] Aborting core
Attaching :0.log, :0-greeter.log and :0-slave.log from after the crash (gdm in
debug mode via custom.conf).
gdm 2.29.4-0ubuntu1
xorg 1:7.5+1ubuntu1
xserver-xorg-video-intel 2:2.9.1-1ubuntu1
--
[lucid] gdm crashes after selecting a username twice
https://bugs.launchpad.net/bugs/503314
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