Hi,
I have downgraded all packages to `testing` and checked integrity of all packages and there are only modified unrelated configurations:
$ dpkg -V
??5?????? c /etc/apache2/mods-available/ident.load
??5?????? c /etc/bash.bashrc
??5?????? c /etc/default/cups
??5?????? c /etc/default/hdapsd
??5?????? c /etc/sane.d/dll.conf
??5?????? c /etc/mysql/my.cnf
the problem remains exactly same. New xsession-error attached.
-- Package Satus:
Package: plasma-desktop
Status: install ok installed
Priority: optional
Section: kde
Installed-Size: 7816
Maintainer: Debian/Kubuntu Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>
Architecture: amd64
Version: 4:5.3.2-2
Depends:
ii breeze 4:5.3.2-4+b1
ii kactivities 5.12.0-2
ii kde-cli-tools 4:5.3.2-2
ii kded5 5.12.0-1
ii libc6 2.19-19
ii libcanberra0 0.30-2.1
ii libfontconfig1 2.11.0-6.3
ii libgcc1 1:5.1.1-14
ii libkf5activities5 5.12.0-2
ii libkf5activitiesexperimentalstats1 4:5.3.2-2
ii libkf5archive5 5.13.0-1
ii libkf5auth5 5.12.0-1
ii libkf5baloo1 5.9.2-3
ii libkf5bookmarks5 5.12.0-1
ii libkf5codecs5 5.13.0-1
ii libkf5completion5 5.12.0-1
ii libkf5configcore5 5.13.0-1
ii libkf5configgui5 5.13.0-1
ii libkf5configwidgets5 5.12.0-1
ii libkf5coreaddons5 5.13.0-1
ii libkf5dbusaddons5 5.13.0-1
ii libkf5emoticons5 5.12.0-1
ii libkf5globalaccel5 5.12.0-1
ii libkf5guiaddons5 5.13.0-1
ii libkf5i18n5 5.13.0-1
ii libkf5iconthemes5 5.12.0-1
ii libkf5itemviews5 5.13.0-1
ii libkf5jobwidgets5 5.12.0-1
ii libkf5kcmutils5 5.12.0-1
ii libkf5kdelibs4support5 5.12.0-2
ii libkf5kiocore5 5.12.0-1
ii libkf5kiofilewidgets5 5.12.0-1
ii libkf5kiowidgets5 5.12.0-1
ii libkf5newstuff5 5.12.0-1
ii libkf5notifications5 5.12.0-1
ii libkf5notifyconfig5 5.12.0-1
ii libkf5parts5 5.12.0-1
ii libkf5people5 5.12.0-1
ii libkf5peoplewidgets5 5.12.0-1
ii libkf5plasma5 5.12.0-1
ii libkf5plasmaquick5 5.12.0-1
ii libkf5quickaddons5 5.12.0-2
ii libkf5runner5 5.12.0-1
ii libkf5service5 5.12.0-1
ii libkf5solid5 5.13.0-1
ii libkf5sonnetui5 5.13.0-1
ii libkf5wallet5 5.12.0-1
ii libkf5widgetsaddons5 5.13.0-1
ii libkf5windowsystem5 5.13.0-3
ii libkf5xmlgui5 5.12.0-1
ii libkfontinst5 4:5.3.2-2
ii libkfontinstui5 4:5.3.2-2
ii libkworkspace5-5 4:5.3.2-4
ii libphonon4qt5-4 4:4.8.3-2
ii libpulse-mainloop-glib0 6.0-5
ii libpulse0 6.0-5
ii libqt5concurrent5 5.4.2+dfsg-5
ii libqt5core5a 5.4.2+dfsg-5
ii libqt5dbus5 5.4.2+dfsg-5
ii libqt5gui5 5.4.2+dfsg-5
ii libqt5network5 5.4.2+dfsg-5
ii libqt5printsupport5 5.4.2+dfsg-5
ii libqt5qml5 5.4.2-4
ii libqt5quick5 5.4.2-4
ii libqt5svg5 5.4.2-3
ii libqt5widgets5 5.4.2+dfsg-5
ii libqt5x11extras5 5.4.2-2+b1
ii libqt5xml5 5.4.2+dfsg-5
ii libstdc++6 5.1.1-14
ii libtaskmanager5 4:5.3.2-4
ii libusb-0.1-4 2:0.1.12-25
ii libx11-6 2:1.6.3-1
ii libx11-xcb1 2:1.6.3-1
ii libxcb-record0 1.10-3+b1
ii libxcb-xkb1 1.10-3+b1
ii libxcb1 1.10-3+b1
ii libxcursor1 1:1.1.14-1+b1
ii libxfixes3 1:5.0.1-2+b2
ii libxi6 2:1.7.4-1+b2
ii libxkbfile1 1:1.0.8-1
ii oxygen-sounds 4:5.3.2-3
ii plasma-desktop-data 4:5.3.2-2
ii plasma-framework 5.12.0-1
ii plasma-workspace 4:5.3.2-4
ii polkit-kde-agent-1 4:5.3.2-1
ii qml-module-org-kde-kwindowsystem 5.12.0-2
ii qml-module-org-kde-solid 5.13.0-1
ii qtdeclarative5-kf5declarative 5.12.0-2
Recommends:
ii bluedevil 4:5.3.2-1
ii fonts-oxygen 4:5.3.2-2
ii kde-config-gtk-style 4:5.3.2-1
ii kde-config-sddm 4:5.3.2-1
ii kde-style-oxygen-qt5 4:5.3.2-3+b1
ii khelpcenter 4:5.3.2-2
ii khotkeys 4:5.3.2-2
ii kinfocenter 4:5.3.2-2
ii kio-extras 4:5.3.2-2
ii kmenuedit 4:5.3.2-1
ii kscreen 4:5.3.2-4
ii ksshaskpass 4:5.3.2-1
ii ksysguard 4:5.3.2-2
un kwin <none>
ii kwrited 4:5.3.2-1
ii muon-discover 4:5.3.2-3
ii muon-notifier 4:5.3.2-3
ii muon-updater 4:5.3.2-3
ii powerdevil 4:5.3.2-1
un sni-qt <none>
ii systemsettings 4:5.3.2-2
ii user-manager 4:5.1.95-1