The patch https://code.launchpad.net/~robert-ancell/lightdm/handle-corrupt- xauthority/+merge/188256
fixes the problem. The debdiff of my test is attached. ** Patch added: "lightdm_1.7.17-0ubuntu1_1.7.17-0ubuntu1.1.debdiff" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1228570/+attachment/3859696/+files/lightdm_1.7.17-0ubuntu1_1.7.17-0ubuntu1.1.debdiff ** Changed in: lightdm (Ubuntu) Status: Confirmed => Triaged -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1228570 Title: Login often fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1228570/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
