Created attachment 1226626 [details] lightdm.conf from FC24 that crashes FC25's lighdm Hi All, FC25 x64 lightdm-1.18.2-1.fc25.x86_64 On upgrading from FC24 to FC25 with dnf, lightdm would not start on both of my machines using lightdm. THIS CAUSED PANIC THROUGH THE RANKS! As it transpires, when lightdm got updated for FC25, the new version changed the way /etc/lightdm/lightdm.conf was used and left the old .conf file in place for the new lightdm to crash on. The fix is to use lightdm.conf.rpmnew as your lightdm.conf. I will attach a new and old lightdm.conf -T
Created attachment 1226627 [details] new lightdm.conf that worked after renaming it
While troubleshooting this, don't forget <ctrl><alt><f2> to get a terminal window.
*** This bug has been marked as a duplicate of bug 1405677 ***