Please merge this with the similar bugs like bug 1864982, bug 1853709, bug 1812556 and more...
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bugs?field.searchtext=lock
Please merge this with the similar bugs like bug 1864982, bug 1853709, bug 1812556 and more...
https:/ /bugs.launchpad .net/ubuntu/ +source/ lightdm/ +bugs?field. searchtext= lock