grep swappiness /etc/sysctl.d/*.conf /etc/sysctl.conf
/etc/sysctl.conf:vm.swappiness.=1I recall writing this to the config file myself. I tried to improve system performance and protect my SSD. I don't recall, though, adding a period there.
Removed the period and run "sudo apt-get install -f". Problem solved. Thanks a lot for your help guys. I learned a lesson here: typos are a bad thing to have in configuration files.
