[Bug 1264696] [NEW] logging in returns to login screen, even though system indicates the user is logged in

[dancing]

Public bug reported:

Log in with correct pw, then ubuntu 11.10 and saucy 13.10 returns to the
login screen instead of desktop. System shows the user is logged in, but
user cannot access own desktop. This first happened on pc, amd-64, using
11.10, finally upgraded to 12.10 and same thing is occurring. Just did a
fresh install of saucy 13.10 to ThinkPad X220, and the same thing is
happening. So both desktops are unusable, can only log in as guest. (If
use incorrect pw, get a red error message saying it's incorrect. If use
correct pw, get the login screen back.)

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1264696

Title:
  logging in returns to login screen, even though system indicates the
  user is logged in

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  Log in with correct pw, then ubuntu 11.10 and saucy 13.10 returns to
  the login screen instead of desktop. System shows the user is logged
  in, but user cannot access own desktop. This first happened on pc,
  amd-64, using 11.10, finally upgraded to 12.10 and same thing is
  occurring. Just did a fresh install of saucy 13.10 to ThinkPad X220,
  and the same thing is happening. So both desktops are unusable, can
  only log in as guest. (If use incorrect pw, get a red error message
  saying it's incorrect. If use correct pw, get the login screen back.)

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