severity 843250 grave thanks After that upgrade, sddm does no longer show the controls for login. Only the date+time is shown. One needs to use the console to downgrade to the libs from stretch.
Can you add some breaks to the control files to avoid this half-transitioned state to be installed? Attached are some logs from sddm.
Nov 5 15:40:56 k sddm[1432]: Initializing... Nov 5 15:40:56 k sddm[1432]: Starting... Nov 5 15:40:56 k sddm[1432]: Adding new display on vt 7 ... Nov 5 15:40:56 k sddm[1432]: Display server starting... Nov 5 15:40:56 k sddm[1432]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{2b774c30-8fb2-4f48-8a2d-06a2f2599449} -background n Nov 5 15:40:57 k sddm[1432]: Running display setup script "/usr/share/sddm/scripts/Xsetup" Nov 5 15:40:57 k sddm[1432]: Display server started. Nov 5 15:40:57 k sddm[1432]: Socket server starting... Nov 5 15:40:57 k sddm[1432]: Socket server started. Nov 5 15:40:57 k sddm[1432]: Greeter starting... Nov 5 15:40:57 k sddm[1432]: Adding cookie to "/var/run/sddm/{2b774c30-8fb2-4f48-8a2d-06a2f2599449}" Nov 5 15:40:57 k sddm-helper[1875]: [PAM] Starting... Nov 5 15:40:57 k sddm-helper[1875]: [PAM] Authenticating... Nov 5 15:40:57 k sddm-helper[1875]: [PAM] returning. Nov 5 15:40:57 k sddm[1432]: Greeter session started successfully Nov 5 15:40:58 k sddm-greeter[1881]: Reading from "/usr/share/xsessions/plasma.desktop" Nov 5 15:40:58 k sddm-greeter[1881]: Connected to the daemon. Nov 5 15:40:58 k sddm[1432]: Message received from greeter: Connect Nov 5 15:40:58 k sddm-greeter[1881]: QObject::installEventFilter(): Cannot filter events for objects in a different thread. Nov 5 15:40:58 k sddm-greeter[1881]: QObject::installEventFilter(): Cannot filter events for objects in a different thread. Nov 5 15:40:58 k sddm-greeter[1881]: file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/StackView.qml:858: TypeError: Property ' Nov 5 15:40:58 k sddm-greeter[1881]: Adding view for "HDMI-1" QRect(0,0 1280x1024) Nov 5 15:40:58 k sddm-greeter[1881]: QDBusConnection: name 'org.freedesktop.UDisks2' had owner '' but we thought it was ':1.15' Nov 5 15:40:58 k sddm-greeter[1881]: Message received from daemon: Capabilities Nov 5 15:40:58 k sddm-greeter[1881]: Message received from daemon: HostName Nov 5 15:40:58 k sddm-greeter[1881]: file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/TextFieldStyle.qml:76: Typ Nov 5 15:40:58 k sddm-greeter[1881]: file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Plasma/TextFieldStyle.qml:76: Typ Nov 5 15:40:58 k sddm-greeter[1881]: file:///usr/share/sddm/themes/breeze/components/Battery.qml:39:18: Unable to assign [undefined] to