Public bug reported: Upgraded to Xenial, and Plasma disappeared. Starting the X server, I get a blank screen, then error messages indicating that there is no Plasma shell. In particular, "All shell packages missing. This is an installation issue, please contact your distribution"
Expected: window manager, task bar, icons, wallpaper, widgets etc. load with X Actual: Not so much. Repeatable: every time. plasma-desktop version: 4:5.5.5-0ubuntu1 Architecture: amd64 This happened on only one of my three systems. I've attached a screenshot of the full screen including the three error windows. It asks for a bug report on krunner. Application switching works (upper left corner and Alt-Tab). Screen resolution and colours seem fine. Icons are often absent (e.g. absent in Emacs but present in Chromium), and passing the mouse over an absent button dumps this to the originating terminal window: (emacs:2916): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed Starting plasmashell from Konsole: $ plasmashell Icon theme "breeze" not found. Icon theme "oxygen" not found. Error: standard icon theme "oxygen" not found! Failed to load the OSD QML file file from "" This also brings up the "all shell packages missing" window. Closing that returns We have no shell handlers installed on the Konsole. The screen locker doesn't work, so instead it tells me to go to a virtual terminal and unlock it from there. That works. Konsole has lost use of the arrow keys, which makes things like Nano very difficult to use. I don't know whether that's related. I tried apt-get --reinstall install for all installed plasma packages. Quirks of current installation: I boot into text mode, then start the X server with startx, and before the upgrade I was using fglrx drivers from http://ppa.launchpad.net/costamagnagianfranco/locutusofborg-ppa/ubuntu (both changes were done to allow Boinc to access the ATI GPU). The driver has evidently not yet been released for 16.04, but X falls back to an ATI driver that seems to work perfectly well. How I got access to Konsole: Thunderbird starts with X. An e-mail containing a link can be used to open chromium, my default browser. Chromium's Downloads tab allows me to open the containing folder. Dolphin runs fine from Konsole (but without icons), but chromium doesn't like dolphin today, so it asks for an alternative program for opening the folder. I tell it "konsole", I get that, and I can use my system again. Sort of. With no KDE/Plasma widgets/taskbar etc., no icons in many programs, and reduced functionality in the terminal, the GUI is extremely clunky and annoying to use. Possibly related to https://bugs.launchpad.net/ubuntu/+source/kubuntu-meta/+bug/1571564 Brief earlier discussion at http://ubuntuforums.org/showthread.php?t=2321538 Hopefully ubuntu-bug uploaded what it needed to. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: plasma-desktop 4:5.5.5-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CurrentDesktop: KDE Date: Fri Apr 29 11:40:01 2016 InstallationDate: Installed on 2015-11-26 (154 days ago) InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) SourcePackage: plasma-desktop UpgradeStatus: Upgraded to xenial on 2016-04-27 (2 days ago) ** Affects: plasma-desktop (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug xenial ** Attachment added: "Windows visible upon starting X" https://bugs.launchpad.net/bugs/1576500/+attachment/4650937/+files/Plasma_fail1.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1576500 Title: Plasma fails to load: "all shell packages missing" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plasma-desktop/+bug/1576500/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs