Unfortunately I don't have the full output from when this was first failing for me, but I eventually worked around it by commenting out the line `addgroup --quiet --system input` in /var/lib/dpkg/info/udev.postinst.
Commenting out the same line also fixed the problem I had today when installing udev 219-7ubuntu6. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1455956 Title: package udev 219-7ubuntu5 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1455956/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
