The patch
https://code.launchpad.net/~robert-ancell/lightdm/handle-corrupt-xauthority/+merge/188256
fixes the problem. The debdiff of my test is attached.
The patch
https:/ /code.launchpad .net/~robert- ancell/ lightdm/ handle- corrupt- xauthority/ +merge/ 188256
fixes the problem. The debdiff of my test is attached.