Ubuntu
ubuntu-release-upgrader package

  1. Bug #1529247
  2. Comment #2

Comment 2 for bug 1529247

Revision history for this message
dino99 (9d9) wrote :

your log errors:

 DEBUG failed to SystemUnLock() (E:Not locked)

2015-12-25 08:25:53,093 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntustudio-desktop')

Please copy/paste the output of:
cat /etc/apt/sources.list