I've just had a look, and I didn't do anything particularly special: I installed unattended-upgrades, ran dpkg-reconfigure -plow unattended-upgrades which created the necessary file in /etc/apt/apt.conf.d, and it is working.
However, the default settings only do security updates; I have some packages from backports that won't be auto-updated and likewise jessie-updates. I found /var/log/unattended-upgrades useful to establish this. I do not know what is wrong with Gregor's setup. If you Lisi revisit this and it doesn't work, I could try to help. -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ Jonathan Dowland ⢿⡄⠘⠷⠚⠋⠀ https://jmtd.net ⠈⠳⣄⠀⠀⠀⠀ Please do not CC me, I am subscribed to the list.
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