Acquired logs for successful boot as well, see [1]. Apparently, almost all the errors seen in failed boot are present in this one as well. The difference is closer to the end of xorg initialization. Failed boot:
<xorg input configuration> Aug 31 15:03:25 kreo /usr/lib/gdm3/gdm-x-session[819]: (--) NVIDIA(GPU-0): AU Optronics Corporation (DFP-1): connected Aug 31 15:03:25 kreo /usr/lib/gdm3/gdm-x-session[819]: (--) NVIDIA(GPU-0): AU Optronics Corporation (DFP-1): Internal DisplayPort Aug 31 15:03:25 kreo /usr/lib/gdm3/gdm-x-session[819]: (--) NVIDIA(GPU-0): AU Optronics Corporation (DFP-1): 1440.0 MHz maximum pixel clock Aug 31 15:03:25 kreo /usr/lib/gdm3/gdm-x-session[819]: (--) NVIDIA(GPU-0): Aug 31 15:03:25 kreo /usr/lib/gdm3/gdm-x-session[819]: dbus-daemon[918]: [session uid=116 pid=918] Activating service name='org.freedesktop.systemd1' requested by ':1.0' (uid=116 pid=819 comm="/usr/lib/gdm3/gdm-x-session gnome-session --autost") Aug 31 15:03:25 kreo /usr/lib/gdm3/gdm-x-session[819]: dbus-daemon[918]: [session uid=116 pid=918] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1 Aug 31 15:03:25 kreo /usr/lib/gdm3/gdm-x-session[819]: Unable to register display with display manager Successful boot: <xorg input configuration> Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): AU Optronics Corporation (DFP-1): connected Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): AU Optronics Corporation (DFP-1): Internal DisplayPort Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): AU Optronics Corporation (DFP-1): 1440.0 MHz maximum pixel clock Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): Sep 01 03:07:36 kreo systemd[2846]: Started D-Bus User Message Bus. Sep 01 03:07:36 kreo dbus-daemon[2866]: [session uid=116 pid=2866] Activating via systemd: service name='org.a11y.Bus' unit='at-spi-dbus-bus.service' requested by ':1.2' (uid=116 pid=2871 comm="/usr/lib/gnome-se Sep 01 03:07:36 kreo systemd[2846]: Starting Accessibility services bus... Sep 01 03:07:36 kreo dbus-daemon[2866]: [session uid=116 pid=2866] Successfully activated service 'org.a11y.Bus' Sep 01 03:07:36 kreo systemd[2846]: Started Accessibility services bus. Sep 01 03:07:36 kreo at-spi-bus-launcher[2872]: dbus-daemon[2877]: Activating service name='org.a11y.atspi.Registry' requested by ':1.0' (uid=116 pid=2871 comm="/usr/lib/gnome-session/gnome-session-check-acceler Sep 01 03:07:36 kreo at-spi-bus-launcher[2872]: dbus-daemon[2877]: Successfully activated service 'org.a11y.atspi.Registry' Sep 01 03:07:36 kreo at-spi-bus-launcher[2872]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): DFP-0: disconnected Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): DFP-0: Internal TMDS Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): DFP-0: 165.0 MHz maximum pixel clock Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): AU Optronics Corporation (DFP-1): connected Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): AU Optronics Corporation (DFP-1): Internal DisplayPort Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): AU Optronics Corporation (DFP-1): 1440.0 MHz maximum pixel clock Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): DFP-2: disconnected Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): DFP-2: Internal DisplayPort Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): DFP-2: 1440.0 MHz maximum pixel clock Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): DFP-3: disconnected Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): DFP-3: Internal TMDS Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): DFP-3: 165.0 MHz maximum pixel clock Sep 01 03:07:36 kreo /usr/lib/gdm3/gdm-x-session[2857]: (--) NVIDIA(GPU-0): [1] https://www.dropbox.com/s/c87mm77tlu3dm5g/successful_boot.7z?dl=0 Regards, -av
