I think I solved my problem (maybe not the better way) : In /lib/plymouth/themes/ubuntu-text, there is a file : ubuntu-text.plymouth But apt-get looked for ubuntu-text.plymouth.in
ubuntu-text.plymouth was empty, so I just created a new file with the same name and ".in" extension and relaunch upgrade $ sudo touch /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth.in $ sudo apt-get upgrade => upgrade successful -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1424364 Title: package plymouth-theme-ubuntu-text 0.8.8-0ubuntu17.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1424364/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs