Seems like default config have line greeter=/usr/local/libexec/lxdm-greeter-gtk And it should be greeter=/usr/libexec/lxdm-greeter-gtk After update lxdm i had blank screen instead of login screen until i edited this line. Reproducible: Always
Fixed in lxdm-0.4.0-r1 yesterday. Sorry, I already contacted upstream about it (not our fault actually).
err, lxde-base/lxdm-0.4.1-r1.