Since filing this bug, I have been successfully using lxdm as a worked around, with lxde
Recently, after I open this bug, I built my own version of xserver-xorg-input-synaptics following the instructions here: https://askubuntu.com/questions/462135/touchpad-issue-jumping-cursor-while-typing-ubuntu-14-04-syndaemon-dont-help That solved the problem with using the touchpad, but did not affect lightdm. I have some other programs I built myself, digikam, for example. I suspect that none of the others are at fault, but I'm not positive. -- 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/1770306 Title: X display is black after 18.04 upgrade from 17.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1770306/+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