Adicione o parâmetro --debug
.
sudo unattended-upgrade --debug
Exemplo de saída:
Initial blacklisted packages:
Starting unattended upgrades script
Allowed origins are: ['o=Ubuntu,a=oneiric-security']
pkgs that look like they should be upgraded:
Fetched 0 B in 0s (0 B/s)
blacklist: []
InstCount=0 DelCount=0 BrokenCout=0
No packages found that can be upgraded unattended