And my .xsession-errors log; in case it contains something useful.
/etc/gdm3/Xsession: Beginning session setup... gnome-session-is-accelerated: No hardware 3D support. gnome-session-check-accelerated: Helper exited with code 256 x-session-manager[4445]: WARNING: Session 'gnome' runnable check failed: Exited with code 1 GNOME_KEYRING_CONTROL=/home/master/.cache/keyring-CvlWJN SSH_AUTH_SOCK=/home/master/.cache/keyring-CvlWJN/ssh GNOME_KEYRING_CONTROL=/home/master/.cache/keyring-CvlWJN SSH_AUTH_SOCK=/home/master/.cache/keyring-CvlWJN/ssh GPG_AGENT_INFO=/home/master/.cache/keyring-CvlWJN/gpg:0:1 GNOME_KEYRING_CONTROL=/home/master/.cache/keyring-CvlWJN SSH_AUTH_SOCK=/home/master/.cache/keyring-CvlWJN/ssh GPG_AGENT_INFO=/home/master/.cache/keyring-CvlWJN/gpg:0:1 GNOME_KEYRING_CONTROL=/home/master/.cache/keyring-CvlWJN SSH_AUTH_SOCK=/home/master/.cache/keyring-CvlWJN/ssh GPG_AGENT_INFO=/home/master/.cache/keyring-CvlWJN/gpg:0:1
(gnome-settings-daemon:4526): libupower-glib-WARNING **: No 'IsDocked' property (gnome-settings-daemon:4526): libupower-glib-WARNING **: No 'IsDocked' property (gnome-settings-daemon:4526): power-plugin-WARNING **: Failed to get brightness: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 1 matched rules; type="method_call", sender=":1.121" (uid=1000 pid=4526 comm="/usr/lib/gnome-settings-daemon/gnome-settings-daem") interface="org.freedesktop.UPower.KbdBacklight" member="GetBrightness" error name="(unset)" requested_reply=0 destination=":1.19" (uid=0 pid=3363 comm="/usr/lib/upower/upowerd)) g_dbus_connection_real_closed: Remote peer vanished with error: Tried sending a file descriptor but remote peer does not support this capability (g-io-error-quark, 0). Exiting. (gnome-settings-daemon:4526): color-plugin-WARNING **: failed to create device: The connection is closed (gnome-settings-daemon:4526): color-plugin-WARNING **: failed to get devices: Failed to GetDevices: The connection is closed ** (gnome-settings-daemon:4526): WARNING **: cannot connect to /org/freedesktop/ConsoleKit/Session10: The connection is closed ** (gnome-settings-daemon:4526): WARNING **: cannot connect to /org/freedesktop/ConsoleKit/Session10: The connection is closed (gnome-settings-daemon:4526): color-plugin-WARNING **: Failed to CreateProfile: The connection is closed (gnome-settings-daemon:4526): color-plugin-WARNING **: Failed to CreateProfile: The connection is closed (gnome-settings-daemon:4546): libupower-glib-WARNING **: No 'IsDocked' property (gnome-settings-daemon:4546): libupower-glib-WARNING **: No 'IsDocked' property (gnome-settings-daemon:4546): power-plugin-WARNING **: Failed to get brightness: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 1 matched rules; type="method_call", sender=":1.125" (uid=1000 pid=4546 comm="/usr/lib/gnome-settings-daemon/gnome-settings-daem") interface="org.freedesktop.UPower.KbdBacklight" member="GetBrightness" error name="(unset)" requested_reply=0 destination=":1.19" (uid=0 pid=3363 comm="/usr/lib/upower/upowerd)) (gnome-settings-daemon:4546): PackageKit-WARNING **: failed to set proxy: The connection is closed (gnome-settings-daemon:4546): PackageKit-WARNING **: failed to set root: The connection is closed g_dbus_connection_real_closed: Remote peer vanished with error: Tried sending a file descriptor but remote peer does not support this capability (g-io-error-quark, 0). Exiting. (gnome-settings-daemon:4546): updates-plugin-WARNING **: failed to set proxies: The connection is closed (gnome-settings-daemon:4546): updates-plugin-WARNING **: failed to set install root: The connection is closed ** (gnome-settings-daemon:4546): WARNING **: cannot connect to /org/freedesktop/ConsoleKit/Session10: Error calling StartServiceByName for org.freedesktop.ConsoleKit: The connection is closed ** (gnome-settings-daemon:4546): WARNING **: cannot connect to /org/freedesktop/ConsoleKit/Session10: Error calling StartServiceByName for org.freedesktop.ConsoleKit: The connection is closed (gnome-settings-daemon:4546): color-plugin-WARNING **: Failed to CreateProfile: The connection is closed (gnome-settings-daemon:4546): color-plugin-WARNING **: failed to create device: The connection is closed (gnome-settings-daemon:4546): color-plugin-WARNING **: failed to create device: The connection is closed (gnome-settings-daemon:4546): color-plugin-WARNING **: failed to get devices: Failed to GetDevices: The connection is closed (gnome-settings-daemon:4546): color-plugin-WARNING **: Failed to CreateProfile: The connection is closed Failed to play sound: File or data not found (gnome-sound-applet:4591): sound-cc-panel-WARNING **: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Method "DescribeAll" with signature "" on interface "org.gtk.Actions" doesn't exist Failure: Module initialization failed x-session-manager[4445]: libupower-glib-WARNING: No 'IsDocked' property x-session-manager[4445]: libupower-glib-WARNING: No 'IsDocked' property (gnome-panel:4567): GLib-GObject-WARNING **: /tmp/buildd/glib2.0-2.32.3/./gobject/gsignal.c:2455: signal `size_request' is invalid for instance `0x129eb40'
