Sebastian: There sure is a connection. I' ve seen it myself where removing Unity (because it doesn' t run well on my machine) eventually removes unity-greeter and I start to get the low resolution error message. Reinstalling unity-greeter (which pulls in many things) results in a working lightdm (only with unity-greeter). So maybe the lightdm depends on something that gets added in along with unity- greeter.
unity-greeter pulls in: "wajig install unity-greeter The following NEW packages will be installed: appmenu-gtk appmenu-gtk3 appmenu-qt appmenu-qt5 compiz compiz-core compiz-gnome compiz-plugins-default freerdp-x11 gir1.2-rb-3.0 gnome-control-center-unity hud indicator-appmenu indicator-bluetooth indicator-datetime indicator-messages indicator-power indicator-printers indicator-session libcolumbus0-0 libcolumbus0-0-common libcompizconfig0 libdbusmenu-qt5 libdmapsharing-3.0-2 libfriends0 libglewmx1.8 libnux-4.0-0 libnux-4.0-common libpam-freerdp librhythmbox-core6 libtimezonemap1 libunity-core-6.0-5 libunity-misc4 lightdm-remote-session-freerdp lightdm-remote-session-uccsconfigure remote-login-service rhythmbox rhythmbox-data rhythmbox-mozilla rhythmbox-plugin-cdrecorder rhythmbox-plugin-zeitgeist rhythmbox-plugins rhythmbox-ubuntuone systemd-shim thin-client-config-agent unity unity-common unity-greeter unity-lens-applications unity-lens-files unity-lens-friends unity-lens-music unity-lens-photos unity-lens-shopping unity-lens-video unity-scope-gdrive unity-scope-musicstores unity-scope-video-remote unity-services" That works, and presents me with a normal resolution lightdm. I further managed to keep lightdm running with a proper resolution by then removing the obviously unnecessary (I'm using OpenBox) from the above installed packages: "wajig remove appmenu-gtk appmenu-gtk3 appmenu-qt appmenu-qt5 compiz compiz-core compiz-gnome compiz-plugins-default gnome-control-center- unity hud indicator-appmenu indicator-bluetooth indicator-datetime indicator-messages indicator-power indicator-printers indicator-session libcompizconfig0 librhythmbox-core6 libunity-core-6.0-5 libunity-misc4 rhythmbox rhythmbox-data rhythmbox-mozilla rhythmbox-plugin-cdrecorder rhythmbox-plugin-zeitgeist rhythmbox-plugins rhythmbox-ubuntuone unity unity-common unity-lens-applications unity-lens-files unity-lens-friends unity-lens-music unity-lens-photos unity-lens-shopping unity-lens-video unity-scope-gdrive unity-scope-musicstores unity-scope-video-remote unity-services" So maybe the real lightdm dependency is in the remaining packages that are not accounted for, the ones not removed during the second line command (the removal of the obviously unnecessary packages). Maintainers/developers: Something to think about: maybe figure out what the needed dep is and link it in to lightdm. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1009321 Title: unity-greeter should depend on unity To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1009321/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs