lightdm user owns several /dev/pts/* devices in 14.04, none in 13.10

[Jamie Strandboge]

On a fresh boot in 14.04 and sitting at the greeter, various /dev/pts devices are open, but in 13.10 and ealier they are not. I'm not sure if this is a problem, but it seems odd and worth understanding why it is happening. Ie:

ubuntu@test-trusty-desktop:~$ dpkg -l|grep greeter
ii unity-greeter 14.04.9-0ubuntu1 amd64 Unity Greeter

ubuntu@test-trusty-desktop:~$ dpkg -l|grep lightdm
ii liblightdm-gobject-1-0 1.10.0-0ubuntu1 amd64 LightDM GObject client library
ii lightdm 1.10.0-0ubuntu1 amd64 Display Manager

ubuntu@test-trusty-desktop:~$ ls -l /dev/pts/*|grep lightdm
crw--w---- 1 lightdm tty 136, 10 Apr 8 14:56 /dev/pts/10
crw--w---- 1 lightdm tty 136, 11 Apr 8 14:56 /dev/pts/11
crw--w---- 1 lightdm tty 136, 12 Apr 8 14:56 /dev/pts/12
crw--w---- 1 lightdm tty 136, 4 Apr 8 14:56 /dev/pts/4
crw--w---- 1 lightdm tty 136, 6 Apr 8 14:56 /dev/pts/6

ubuntu@test-trusty-desktop:~$ loginctl
   SESSION UID USER SEAT
        c1 112 lightdm seat0
         1 1000 ubuntu

2 sessions listed.
ubuntu@test-trusty-desktop:~$ loginctl session-status c1
c1 - lightdm (112)
           Since: Tue 2014-04-08 14:56:55 CDT; 2min 28s ago
          Leader: 1667 (lightdm)
            Seat: seat0; vc7
         Display: :0
         Service: lightdm-greeter; type x11; class greeter
           State: active
          CGroup: systemd:/user/112.user/c1.session
                  ├─1667 lightdm --session-child 16 19
                  ├─1684 /bin/sh /usr/lib/lightdm/lightdm-greeter-session /usr/sbi...
                  ├─1695 //bin/dbus-daemon --fork --print-pid 5 --print-address 7 ...
                  ├─1700 /usr/sbin/unity-greeter
                  ├─1728 /usr/lib/at-spi2-core/at-spi-bus-launcher --launch-immedi...
                  ├─1732 /bin/dbus-daemon --config-file=/etc/at-spi2/accessibility...
                  ├─1735 /usr/lib/at-spi2-core/at-spi2-registryd --use-gnome-sessi...
                  ├─1740 /usr/lib/gvfs/gvfsd
                  ├─1755 /usr/lib/gvfs/gvfsd-fuse /run/user/112/gvfs -f -o big_wri...
                  ├─1766 /usr/lib/dconf/dconf-service
                  ├─1798 init --user --startup-event indicator-services-start
                  ├─1800 nm-applet
                  ├─1802 /usr/lib/x86_64-linux-gnu/indicator-bluetooth/indicator-b...
                  ├─1804 /usr/lib/x86_64-linux-gnu/indicator-power/indicator-power...
                  ├─1806 /usr/lib/x86_64-linux-gnu/indicator-datetime/indicator-da...
                  ├─1808 /usr/lib/x86_64-linux-gnu/indicator-sound/indicator-sound...
                  ├─1816 /usr/lib/x86_64-linux-gnu/indicator-keyboard-service --us...
                  ├─1819 /usr/lib/x86_64-linux-gnu/indicator-session/indicator-ses...
                  ├─1830 /usr/lib/unity-settings-daemon/unity-settings-daemon
                  ├─1867 /usr/bin/pulseaudio --start --log-target=syslog
                  ├─1901 /usr/lib/x86_64-linux-gnu/notify-osd
                  └─2023 /usr/lib/x86_64-linux-gnu/gconf/gconfd-2

ubuntu@test-trusty-desktop:~$ for i in 10 11 12 4 6 ; do sudo lsof |grep "/dev/pts/$i$" ; done
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/112/gvfs
      Output information may be incomplete.
indicator 1806 lightdm 1u CHR 136,10 0t0 13 /dev/pts/10
indicator 1806 lightdm 2u CHR 136,10 0t0 13 /dev/pts/10
dconf 1806 1832 lightdm 1u CHR 136,10 0t0 13 /dev/pts/10
dconf 1806 1832 lightdm 2u CHR 136,10 0t0 13 /dev/pts/10
gmain 1806 1833 lightdm 1u CHR 136,10 0t0 13 /dev/pts/10
gmain 1806 1833 lightdm 2u CHR 136,10 0t0 13 /dev/pts/10
gdbus 1806 1840 lightdm 1u CHR 136,10 0t0 13 /dev/pts/10
gdbus 1806 1840 lightdm 2u CHR 136,10 0t0 13 /dev/pts/10
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/112/gvfs
      Output information may be incomplete.
indicator 1808 lightdm 1u CHR 136,11 0t0 14 /dev/pts/11
indicator 1808 lightdm 2u CHR 136,11 0t0 14 /dev/pts/11
gdbus 1808 1849 lightdm 1u CHR 136,11 0t0 14 /dev/pts/11
gdbus 1808 1849 lightdm 2u CHR 136,11 0t0 14 /dev/pts/11
dconf 1808 1851 lightdm 1u CHR 136,11 0t0 14 /dev/pts/11
dconf 1808 1851 lightdm 2u CHR 136,11 0t0 14 /dev/pts/11
gmain 1808 1970 lightdm 1u CHR 136,11 0t0 14 /dev/pts/11
gmain 1808 1970 lightdm 2u CHR 136,11 0t0 14 /dev/pts/11
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/112/gvfs
      Output information may be incomplete.
indicator 1819 lightdm 1u CHR 136,12 0t0 15 /dev/pts/12
indicator 1819 lightdm 2u CHR 136,12 0t0 15 /dev/pts/12
dconf 1819 1831 lightdm 1u CHR 136,12 0t0 15 /dev/pts/12
dconf 1819 1831 lightdm 2u CHR 136,12 0t0 15 /dev/pts/12
gdbus 1819 1844 lightdm 1u CHR 136,12 0t0 15 /dev/pts/12
gdbus 1819 1844 lightdm 2u CHR 136,12 0t0 15 /dev/pts/12
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/112/gvfs
      Output information may be incomplete.
indicator 1802 lightdm 1u CHR 136,4 0t0 7 /dev/pts/4
indicator 1802 lightdm 2u CHR 136,4 0t0 7 /dev/pts/4
gdbus 1802 1805 lightdm 1u CHR 136,4 0t0 7 /dev/pts/4
gdbus 1802 1805 lightdm 2u CHR 136,4 0t0 7 /dev/pts/4
dconf 1802 1812 lightdm 1u CHR 136,4 0t0 7 /dev/pts/4
dconf 1802 1812 lightdm 2u CHR 136,4 0t0 7 /dev/pts/4
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/112/gvfs
      Output information may be incomplete.
indicator 1804 lightdm 1u CHR 136,6 0t0 9 /dev/pts/6
indicator 1804 lightdm 2u CHR 136,6 0t0 9 /dev/pts/6
gdbus 1804 1809 lightdm 1u CHR 136,6 0t0 9 /dev/pts/6
gdbus 1804 1809 lightdm 2u CHR 136,6 0t0 9 /dev/pts/6
dconf 1804 1811 lightdm 1u CHR 136,6 0t0 9 /dev/pts/6
dconf 1804 1811 lightdm 2u CHR 136,6 0t0 9 /dev/pts/6