Thanks for the redirect.
I read through the thread of 1713313 and even tried some of the
mitigating suggestions. None worked.
And: I have a similarly set up machine (a MBPR15 instead of MBPR13)
where the issue does not show.
Next I want to compare source versions to figure out whether I have not
come across the issue yet or it is not existing in the other machine.
Are you absolutely sure about suggested reason policy-kit (as suggested
in 1713313)?
Wayland was there before and it worked. So why not now?
Btw. The issue appeared after this upgrade:
Start-Date: 2017-09-15 11:42:10
Commandline: aptdaemon role='role-commit-packages' sender=':1.176'
Install: ubuntu-wallpapers-artful:amd64 (17.10.0-0ubuntu1, automatic)
Upgrade: gnome-control-center-data:amd64 (1:3.25.92.1-0ubuntu3,
1:3.26.0-0ubuntu1), libqpdf18:amd64 (7.0~b1-0ubuntu1, 7.0~b1-3), libcups2:amd64
(2.2.4-6ubuntu1, 2.2.4-7), gnome-session-common:amd64 (3.25.90-0ubuntu4,
3.26.0-0ubuntu1), gir1.2-mutter-1:amd64 (3.25.91+20170902~ce515c5-1ubuntu1,
3.26.0-1), gvfs-backends:amd64 (1.33.91-0ubuntu1, 1.34.0-0ubuntu1),
gnome-control-center:amd64 (1:3.25.92.1-0ubuntu3, 1:3.26.0-0ubuntu1),
gvfs-bin:amd64 (1.33.91-0ubuntu1, 1.34.0-0ubuntu1), libgirepository-1.0-1:amd64
(1.53.2-4, 1.54.0-1), gnome-software-plugin-snap:amd64 (3.25.91-1ubuntu5,
3.26.0-0ubuntu1), ubuntu-wallpapers-zesty:amd64 (17.04.1-0ubuntu1,
17.10.0-0ubuntu1), libgd3:amd64 (2.2.5-1, 2.2.5-2), libgs9:amd64
(9.21~dfsg+1-0ubuntu2, 9.21~dfsg+1-0ubuntu3), gnome-desktop3-data:amd64
(3.25.91.1-0ubuntu2, 3.26.0-0ubuntu1), language-selector-common:amd64 (0.178,
0.179), libarchive13:amd64 (3.2.2-2, 3.2.2-3.1),
virtualbox-guest-additions-iso:amd64 (5.1.26-1, 5.1.28-1), gnome-software:amd64
(3.25.91-1ubuntu5, 3.26.0-0ubuntu1), libmutter-1-0:amd64
(3.25.91+20170902~ce515c5-1ubuntu1, 3.26.0-1), ubuntu-session:amd64
(3.25.90-0ubuntu4, 3.26.0-0ubuntu1), libgtksourceview-3.0-common:amd64
(3.24.3-1, 3.24.4-1), virtualbox-dkms:amd64 (5.1.26-dfsg-2, 5.1.28-dfsg-1),
cups-server-common:amd64 (2.2.4-6ubuntu1, 2.2.4-7), isc-dhcp-common:amd64
(4.3.5-3ubuntu1, 4.3.5-3ubuntu2), gir1.2-freedesktop:amd64 (1.53.2-4,
1.54.0-1), gdm3:amd64 (3.25.90.1-0ubuntu4, 3.26.0-1ubuntu1), cups-common:amd64
(2.2.4-6ubuntu1, 2.2.4-7), virtualbox-ext-pack:amd64 (5.1.26-1, 5.1.28-1),
virtualbox:amd64 (5.1.26-dfsg-2, 5.1.28-dfsg-1), gir1.2-gdm-1.0:amd64
(3.25.90.1-0ubuntu4, 3.26.0-1ubuntu1), gir1.2-nautilus-3.0:amd64
(1:3.25.92-0ubuntu1, 1:3.26.0-0ubuntu1), mutter-common:amd64
(3.25.91+20170902~ce515c5-1ubuntu1, 3.26.0-1), libllvm3.9:amd64
(1:3.9.1-13ubuntu4, 1:3.9.1-13ubuntu6), gir1.2-gnomedesktop-3.0:amd64
(3.25.91.1-0ubuntu2, 3.26.0-0ubuntu1), deja-dup:amd64 (36.0-0ubuntu1,
36.1-0ubuntu1), libgdm1:amd64 (3.25.90.1-0ubuntu4, 3.26.0-1ubuntu1),
cups-filters:amd64 (1.17.5-0ubuntu1, 1.17.5-1), gvfs-libs:amd64
(1.33.91-0ubuntu1, 1.34.0-0ubuntu1), gvfs-fuse:amd64 (1.33.91-0ubuntu1,
1.34.0-0ubuntu1), nautilus:amd64 (1:3.25.92-0ubuntu1, 1:3.26.0-0ubuntu1),
libnautilus-extension1a:amd64 (1:3.25.92-0ubuntu1, 1:3.26.0-0ubuntu1),
libgnome-desktop-3-12:amd64 (3.25.91.1-0ubuntu2, 3.26.0-0ubuntu1),
adwaita-icon-theme:amd64 (3.25.91-0ubuntu1, 3.26.0-0ubuntu1), cups-ppdc:amd64
(2.2.4-6ubuntu1, 2.2.4-7), gir1.2-glib-2.0:amd64 (1.53.2-4, 1.54.0-1),
ubuntu-software:amd64 (3.25.91-1ubuntu5, 3.26.0-0ubuntu1),
gir1.2-gtksource-3.0:amd64 (3.24.3-1, 3.24.4-1), libcupsmime1:amd64
(2.2.4-6ubuntu1, 2.2.4-7), libcupsfilters1:amd64 (1.17.5-0ubuntu1, 1.17.5-1),
libgcrypt20:amd64 (1.7.8-2, 1.7.8-2ubuntu1), gnome-shell-common:amd64
(3.25.91-0ubuntu5, 3.26.0-0ubuntu1), ghostscript:amd64 (9.21~dfsg+1-0ubuntu2,
9.21~dfsg+1-0ubuntu3), libwebkit2gtk-4.0-37:amd64 (2.18.0-1, 2.18.0-2),
libfontembed1:amd64 (1.17.5-0ubuntu1, 1.17.5-1), ghostscript-x:amd64
(9.21~dfsg+1-0ubuntu2, 9.21~dfsg+1-0ubuntu3), libgs9-common:amd64
(9.21~dfsg+1-0ubuntu2, 9.21~dfsg+1-0ubuntu3), libgtksourceview-3.0-1:amd64
(3.24.3-1, 3.24.4-1), gnome-session-bin:amd64 (3.25.90-0ubuntu4,
3.26.0-0ubuntu1), qpdf:amd64 (7.0~b1-0ubuntu1, 7.0~b1-3),
cups-filters-core-drivers:amd64 (1.17.5-0ubuntu1, 1.17.5-1), gvfs:amd64
(1.33.91-0ubuntu1, 1.34.0-0ubuntu1), gnome-control-center-faces:amd64
(1:3.25.92.1-0ubuntu3, 1:3.26.0-0ubuntu1), ubuntu-wallpapers:amd64
(17.04.1-0ubuntu1, 17.10.0-0ubuntu1), libcupsppdc1:amd64 (2.2.4-6ubuntu1,
2.2.4-7), gir1.2-webkit2-4.0:amd64 (2.18.0-1, 2.18.0-2), virtualbox-qt:amd64
(5.1.26-dfsg-2, 5.1.28-dfsg-1), snapd-login-service:amd64 (1.19-0ubuntu1,
1.23-0ubuntu1), gvfs-common:amd64 (1.33.91-0ubuntu1, 1.34.0-0ubuntu1),
libzstd1:amd64 (1.2.0-1, 1.3.1+dfsg-1), nautilus-data:amd64
(1:3.25.92-0ubuntu1, 1:3.26.0-0ubuntu1), gnome-shell:amd64 (3.25.91-0ubuntu5,
3.26.0-0ubuntu1), cups-bsd:amd64 (2.2.4-6ubuntu1, 2.2.4-7),
libsnapd-glib1:amd64 (1.19-0ubuntu1, 1.23-0ubuntu1), cups-core-drivers:amd64
(2.2.4-6ubuntu1, 2.2.4-7), cups-daemon:amd64 (2.2.4-6ubuntu1, 2.2.4-7),
language-selector-gnome:amd64 (0.178, 0.179), libcupsimage2:amd64
