package:shim-signed:1.32~16.04.1+0.9+1474479173.6c180c6-1ubuntu1 Processing triggers for shim-signed (1.32~16.04.1+0.9+1474479173.6c180c6-1ubuntu1) ... debconf: unable to initialize frontend: Passthrough debconf: (Cannot connect to /tmp/aptdaemon-qeq_4qxi/debconf.socket: Connection refused at (eval 18) line 3.) debconf: falling back to frontend: Noninteractive Running in non-interactive mode, doing nothing. --- /var/lib/shim-signed/dkms-list 2017-10-22 12:33:48.782539423 -0400 +++ /var/lib/shim-signed/dkms-list.new 2017-10-22 12:33:48.794539424 -0400 @@ -1 +1,3 @@ /var/lib/dkms +/var/lib/dkms/bbswitch +/var/lib/dkms/nvidia-387 dpkg: error processing package shim-signed (--configure): subprocess installed post-installation script returned error exit status 1