Ubuntu
update-manager package

  1. Bug #1211511
  2. Comment #11

Comment 11 for bug 1211511

Revision history for this message
Peter Flynn (frisket) wrote : Re: Text not visible in Software Updater dialog (update-manager GUI) when updated software is available.

I just had this identical problem just now (2013-08-16) and I ran sudo apt-get upgrade to fix it:

The following packages will be upgraded:
  command-not-found command-not-found-data libplymouth2 plymouth
  plymouth-label plymouth-theme-ubuntu-text plymouth-x11
  python3-commandnotfound
8 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Perhaps be better to list "software libraries and packages for internal management" or something like, just to avoid the empty window.