I solved the issue using the following links http://ubuntuforums.org/showthread.php?t=1597294
alt+f2... gksudo lxterminal... sudo dpkg --force-all -P setserial http://askubuntu.com/questions/539235/how-to-remove-obsolete-packages- after-failed-release-upgrade-via-do-release-upgr apt-get update apt-get autoremove apt-get clean UNUSCONF=$(dpkg -l|grep "^rc"|awk '{print $2}') apt-get remove --purge $UNUSCONF NEWKERNEL=$(uname -r|sed 's/-*[a-z]//g'|sed 's/-386//g') ADDKERNEL="linux-(image|headers|ubuntu-modules|restricted-modules)" METAKERNEL="linux-(image|headers|restricted- modules)-(generic|i386|server|common|rt|xen)" UNUSKERNELS=$(dpkg -l|awk '{print $2}'|grep -E $ADDKERNEL |grep -vE $METAKERNEL|grep -v $NEWKERNEL) apt-get remove --purge $UNUSKERNELS update-grub *** than after a reboot.. using Synaptic Package Manager.. reinstalled setserial package P.S. I guess Upgrading from lubuntu 15.04 with 3.19 version of vmlinuz to 15.10 doesnt cleanup all the old upgrades... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1530194 Title: setserial =>ERROR CODE 1!! after apt-get autoremove To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/setserial/+bug/1530194/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs