On Fri, Apr 5, 2019 at 8:18 PM <gilles.chara...@free.fr> wrote: > C]I have just a file which name is apt-listbugs in /etc/apt/preferences.d : > > /etc/apt/preferences.d# ls -ail > total 12 > 1044672 drwxr-xr-x 2 root root 4096 mars 6 2018 . > 1044507 drwxr-xr-x 8 root root 4096 avril 5 08:44 .. > 1045052 -rw-r--r-- 1 root root 631 févr. 26 08:22 apt-listbugs > > > less apt-listbugs > Result : [...] > Explanation: Pinned by apt-listbugs at 2018-10-27 19:50:22 +0200 > Explanation: #910964: libprotobuf17 needs Breaks: libprotobuf10 > Package: libprotobuf17 > Pin: version * > Pin-Priority: -30000 This is the culprit. Somehow auto-generated I suppose. Please delete this segment and you will be able to install / update libprotobuf17 again.
Cheers, Laszlo/GCS