I have changed the package selection to xorg-server.
** Package changed: ubuntu = xorg-server (Ubuntu)
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On Xorg gui logon, when type password first time, X server resets once.
https://bugs.launchpad.net/bugs/532183
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Bugs,
*** This bug is a duplicate of bug 532047 ***
https://bugs.launchpad.net/bugs/532047
** This bug has been marked a duplicate of bug 532047
Xorg crashed at first login attempt
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On Xorg gui logon, when type password first time, X server resets once.
https://bugs.launchpad.net/bugs/532183
** Attachment added: BootDmesg.txt
http://launchpadlibrarian.net/40197229/BootDmesg.txt
** Attachment added: CurrentDmesg.txt
http://launchpadlibrarian.net/40197230/CurrentDmesg.txt
** Attachment added: Dependencies.txt
http://launchpadlibrarian.net/40197231/Dependencies.txt
**
I have exactly the same problem. I activated auto-login with GDM and
first time I'm prompted for a password, I type it in the dialog box,
press Enter and the session is closing and I'm at GDM login. If I
validate my password clicking on the Validate button, all is fine and
the session is not
