Ubuntu
update-manager package

  1. Bug #925260
  2. Comment #3

Comment 3 for bug 925260

Revision history for this message
Brian-sulzen (brian-sulzen) wrote : Re: Update Manager does not open, but the icon appears on the dash when updates are available

Same problem for me. The workaround is to open a terminal, type "pgrep update", kill update manager using the returned process id and then start Update Manager again.