Bug#431022: gdm: second login not possible for same user (gdmflexiserver)

[Kiro Zimmer]

Package: gdm
Version: 2.18.2-1
Severity: important

Hello!
A user who is already logged in via gdm, can not login on a second 
session (anymore) with gdm. But for another user it is no problem.

steps to reproduce:
- start gdm, do a normal login
- start another loginscreen ("gdmflexiserver" or use menu)
- try to login as the SAME user

-> no login possible as the SAME user
-> but trying ANOTHER user is possible

It is definitely a gdm problem, because normally it would ask after the 
password "You are already logged in. Do you realy want to login?"
(my translation, I use german locale)

Another interesting fact is that it depends if you are logged in on the 
first terminal an a "physical" way. Lets change the steps above:

- start gdm, do a normal login as USER A
- start a nested gdm, login as USER B  ("gdmflexiserver -n")
- start another loginscreen ("gdmflexiserver" or menu)
- try to login as USER B

-> the second login is possible, because the first was nested :-)

Hope that helps to find the bug.

Regards,
Kiro





- but for another user it is possible
- not


--- Package information. ---
Depends                      (Version) | Installed
======================================-+-===============
libart-2.0-2               (>= 2.3.18) | 2.3.19-3
libatk1.0-0                (>= 1.13.2) | 1.18.0-2
libattr1                  (>= 2.4.4-1) | 1:2.4.32-1.1
libc6                       (>= 2.5-5) | 2.5-11
libcairo2                   (>= 1.4.0) | 1.4.8-1
libdbus-1-3                  (>= 0.94) | 1.1.1-3
libdbus-glib-1-2             (>= 0.73) | 0.73-2
libdmx1                                | 1:1.0.2-2
libfontconfig1              (>= 2.4.0) | 2.4.2-1.2
libglade2-0               (>= 1:2.5.1) | 1:2.6.1-1
libglib2.0-0               (>= 2.12.9) | 2.12.12-1
libgnomecanvas2-0          (>= 2.11.1) | 2.14.0-3
libgtk2.0-0                (>= 2.10.3) | 2.10.13-1
libpam0g                     (>= 0.76) | 0.79-4
libpango1.0-0              (>= 1.16.4) | 1.16.4-1
libpopt0                     (>= 1.10) | 1.10-3
librsvg2-2                 (>= 2.16.1) | 2.16.1-2
libselinux1                (>= 2.0.15) | 2.0.15-2
libwrap0                               | 7.6.dbs-13
libx11-6                               | 2:1.1.2-1
libxau6                                | 1:1.0.3-2
libxcursor1                 (>> 1.1.2) | 1:1.1.8-2
libxdmcp6                              | 1:1.0.2-2
libxext6                               | 1:1.0.3-2
libxfixes3                (>= 1:4.0.1) | 1:4.0.3-2
libxi6                                 | 1:1.0.1-4
libxinerama1                           | 1:1.0.2-1
libxml2                    (>= 2.6.28) | 2.6.29.dfsg-1
libxrandr2                (>= 2:1.2.0) | 2:1.2.1-1
libxrender1                            | 1:0.9.2-1
debconf                      (>= 0.5)  | 1.5.13
 OR debconf-2.0                        | 
adduser                                | 3.103
debconf                      (>= 0.5)  | 1.5.13
 OR debconf-2.0                        | 
libpam-modules             (>= 0.72-1) | 0.79-4
libpam-runtime          (>= 0.76-13.1) | 0.79-4
gnome-session                          | 2.18.2-1
 OR xterm                              | 226-1
 OR x-window-manager                   | 
 OR x-terminal-emulator                | 
xbase-clients                          | 1:7.2.ds2-2
gksu                        (>= 1.0.7) | 2.0.0-4
lsb-base                   (>= 3.0-10) | 3.1-23.1
librsvg2-common                        | 2.16.1-2
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