Actually according to https://wiki.ubuntu.com/DebuggingUpdateManager there are 3 logs in /var/log/dist-upgrade that will be specifically useful:
apt.log term.log main.log
Actually according to https:/ /wiki.ubuntu. com/DebuggingUp dateManager there are 3 logs in /var/log/ dist-upgrade that will be specifically useful:
apt.log
term.log
main.log