[Bug 968630] [NEW] fails to show upgrade to Precise (from Oneiric)

[Mio]

Public bug reported:

I'm trying to upgrade to Precise Beta 2 but upon invoking "update-manager -d" it fails to show the possibility to upgrade. 
see attached screenshot.
terminal output:
mio at mio-VGN-FZ31S:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 11.10
Release:	11.10
Codename:	oneiric
mio at mio-VGN-FZ31S:~$ uname -a
Linux mio-VGN-FZ31S 3.0.0-17-generic #30-Ubuntu SMP Thu Mar 8 20:45:39 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
mio at mio-VGN-FZ31S:~$ update-manager -d

(update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
assertion `GDK_IS_WINDOW (window)' failed

(update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
assertion `GDK_IS_WINDOW (window)' failed

(update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
assertion `GDK_IS_WINDOW (window)' failed

(update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
assertion `GDK_IS_WINDOW (window)' failed

(update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
assertion `GDK_IS_WINDOW (window)' failed

(update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
assertion `GDK_IS_WINDOW (window)' failed

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


** Tags: dist-upgrade

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https://bugs.launchpad.net/bugs/968630

Title:
  fails to show upgrade to Precise (from Oneiric)

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

Bug description:
  I'm trying to upgrade to Precise Beta 2 but upon invoking "update-manager -d" it fails to show the possibility to upgrade. 
  see attached screenshot.
  terminal output:
  mio at mio-VGN-FZ31S:~$ lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 11.10
  Release:	11.10
  Codename:	oneiric
  mio at mio-VGN-FZ31S:~$ uname -a
  Linux mio-VGN-FZ31S 3.0.0-17-generic #30-Ubuntu SMP Thu Mar 8 20:45:39 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
  mio at mio-VGN-FZ31S:~$ update-manager -d

  (update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
  assertion `GDK_IS_WINDOW (window)' failed

  (update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
  assertion `GDK_IS_WINDOW (window)' failed

  (update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
  assertion `GDK_IS_WINDOW (window)' failed

  (update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
  assertion `GDK_IS_WINDOW (window)' failed

  (update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
  assertion `GDK_IS_WINDOW (window)' failed

  (update-manager:3033): Gdk-CRITICAL **: gdk_window_get_pointer:
  assertion `GDK_IS_WINDOW (window)' failed

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