can anyone think of any reason why on one of my systems I can't login with lightdm? as soon as I do (with any account, including a brand new one without any weird/old/obsolete dotfiles), it seems to login OK but then logs out again immediately. my normal desktop environment is xfce, but the same thing happens if i tell lightdm to use lxde or gnome or anything else. logging in on a text VT and running startx works perfectly, and is how i've had to login for the last few months. I have four other very similar systems where lightdm works without a problem, including a mythtv box set to auto-login as the mythtv user. two of them are sysvinit, two of them are systemd. i can't see anything in the logs to indicate any problem, even the auth.log just shows that the session was started and then the session terminated immediately afterwards. any hints on what to look for in the logs or where/how to increase debug log levels would also be appreciated. craig -- craig sanders <cas@taz.net.au>