Bug 1333982 - dnf upgrade causes kde to start with a black screen (broken kde) (workaround downgrade plasma-nm to 5.4.2-1.fc23)
Summary: dnf upgrade causes kde to start with a black screen (broken kde) (workaround ...
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: plasma-nm
Version: 23
Hardware: x86_64
OS: Linux
unspecified
urgent
Target Milestone: ---
Assignee: KDE SIG
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-05-06 21:56 UTC by Reartes Guillermo
Modified: 2016-12-20 20:23 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-12-20 20:23:21 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)
xession errors (71.68 KB, text/plain)
2016-05-06 21:58 UTC, Reartes Guillermo
no flags Details
xorg log (26.78 KB, text/plain)
2016-05-06 22:02 UTC, Reartes Guillermo
no flags Details

Description Reartes Guillermo 2016-05-06 21:56:44 UTC
Description of problem:

After a 'dnf upgrade' kde no longer starts correctly.
It starts with a black sreeen.
ALT+F2 works, ALT+TAB works, no panel, no ui elements, no applets (it is not possible to use the network manager applet). 

Version-Release number of selected component (if applicable):
plasma-workspace 5.6.2-1.fc23


How reproducible:
i only have 1 laptop with F23 KDE, (intel vga) and it happened there.

Steps to Reproduce:
1. dnf ugprade
2. reboot
3. puf

Actual results:
broken kde setup
must plug wired ethernet in order to perform package management actions

Expected results:
flawless updates (or at least with less severe issues)

Additional info:
attached later.

Comment 1 Reartes Guillermo 2016-05-06 21:57:17 UTC
I performed an update (id 134) and kde/plasma was broken uppon rebooting (black screen).

# dnf history list
ID     | Linea de comandos        | Día y hora       | Acción(es)     | Modific
-------------------------------------------------------------------------------
   135 | install razorqt          | 2016-05-06 11:41 | Install        |   25   
   134 | --refresh upgrade        | 2016-05-06 11:13 | I, O, A        |   92   
   133 | --refresh upgrade        | 2016-05-03 10:24 | Update         |    3   
   132 | upgrade                  | 2016-05-02 14:59 | E, I, A        |   78   
   131 | --refresh upgrade        | 2016-04-26 10:31 | I, O, A        |  110 EE

# dnf history info 123
ID de transacción : 123
Hora inicial     : Fri Apr  8 12:47:16 2016
Rpmdb inicial    : 3039:afc9d1c5a302e950a582109d0410333fcf424b53
Hora final       :            12:49:36 2016 (140 segundos)
Rpmdb final      : 3042:dfba41323d24e732a0f65ccf6c8a2ef02b2834c6
Usuario           : greartes <greartes>
Codigo-obtenido    : Éxito
Línea de comando   : --refresh upgrade
Transacción realizada con:
    Actualizado    dnf-1.1.7-2.fc23.noarch         @updates
    Actualizado    rpm-4.13.0-0.rc1.12.fc23.x86_64 @updates
Paquetes modificados:
    Actualizado              ModemManager-1.4.10-2.fc23.x86_64                 (unknown)
    Actualizar                            1.4.14-1.fc23.x86_64                 @updates
    Actualizado              ModemManager-glib-1.4.10-2.fc23.x86_64            (unknown)
    Actualizar                                 1.4.14-1.fc23.x86_64            @updates
    Actualizado              bluez-5.36-1.fc23.x86_64                          @updates
    Actualizar                     5.38-1.fc23.x86_64                          @updates
    Actualizado              bluez-cups-5.36-1.fc23.x86_64                     @updates
    Actualizar                          5.38-1.fc23.x86_64                     @updates
    Actualizado              bluez-libs-5.36-1.fc23.x86_64                     @updates
    Actualizar                          5.38-1.fc23.x86_64                     @updates
    Actualizado              btrfs-progs-4.3.1-1.fc23.x86_64                   @updates
    Actualizar                           4.4.1-1.fc23.x86_64                   @updates
    Actualizado              eclipse-linuxtools-4.2.1-4.fc23.noarch            @updates
    Actualizar                                  4.2.2-1.fc23.noarch            @updates
    Actualizado              eclipse-oprofile-4.2.1-4.fc23.noarch              @updates
    Actualizar                                4.2.2-1.fc23.noarch              @updates
    Actualizado              eclipse-rpm-editor-4.2.1-4.fc23.noarch            @updates
    Actualizar                                  4.2.2-1.fc23.noarch            @updates
    Actualizado              eclipse-valgrind-4.2.1-4.fc23.noarch              @updates
    Actualizar                                4.2.2-1.fc23.noarch              @updates
    Actualizado              flash-plugin-11.2.202.577-release.x86_64          @adobe-linux-x86_64
    Actualizar                            11.2.202.616-release.x86_64          @adobe-linux-x86_64
    Actualizado              glusterfs-3.7.8-4.fc23.x86_64                     @updates
    Actualizar                         3.7.9-1.fc23.x86_64                     @updates
    Actualizado              glusterfs-api-3.7.8-4.fc23.x86_64                 @updates
    Actualizar                             3.7.9-1.fc23.x86_64                 @updates
    Actualizado              glusterfs-client-xlators-3.7.8-4.fc23.x86_64      @updates
    Actualizar                                        3.7.9-1.fc23.x86_64      @updates
    Actualizado              glusterfs-fuse-3.7.8-4.fc23.x86_64                @updates
    Actualizar                              3.7.9-1.fc23.x86_64                @updates
    Actualizado              glusterfs-libs-3.7.8-4.fc23.x86_64                @updates
    Actualizar                              3.7.9-1.fc23.x86_64                @updates
    Actualizado              httpcomponents-client-4.5-2.fc23.noarch           (unknown)
    Actualizar                                     4.5-4.fc23.noarch           @updates
    Actualizado              ktp-text-ui-15.12.3-1.fc23.x86_64                 @updates
    Actualizar                           15.12.3-2.fc23.x86_64                 @updates
    Actualizado              libkworkspace5-5.5.5-4.fc23.x86_64                @updates
    Actualizar                              5.5.5-5.fc23.x86_64                @updates
    Actualizado              libmbim-1.12.2-1.fc23.x86_64                      (unknown)
    Actualizar                       1.12.4-2.fc23.x86_64                      @updates
    Actualizado              libmbim-utils-1.12.2-1.fc23.x86_64                (unknown)
    Actualizar                             1.12.4-2.fc23.x86_64                @updates
    Actualizar               libqmi-1.12.10-1.fc23.x86_64                      @updates
    Actualizado              libqmi-1.12.6-1.fc23.x86_64                       (unknown)
    Actualizar               libqmi-utils-1.12.10-1.fc23.x86_64                @updates
    Actualizado              libqmi-utils-1.12.6-1.fc23.x86_64                 (unknown)
    Actualizado              librsvg2-2.40.13-1.fc23.x86_64                    @updates
    Actualizar                        2.40.15-1.fc23.x86_64                    @updates
    Actualizado              libwacom-0.17-1.fc23.x86_64                       @updates
    Actualizar                        0.18-2.fc23.x86_64                       @updates
    Actualizado              libwacom-data-0.17-1.fc23.noarch                  @updates
    Actualizar                             0.18-2.fc23.noarch                  @updates
    Actualizado              mercurial-3.5.1-1.fc23.x86_64                     (unknown)
    Actualizar                         3.5.2-1.fc23.x86_64                     @updates
    Actualizado              mercurial-hgk-3.5.1-1.fc23.x86_64                 (unknown)
    Actualizar                             3.5.2-1.fc23.x86_64                 @updates
    Actualizado              mplayer-1.2.1-1.fc23.x86_64                       @rpmfusion-free-updates
    Actualizar                       1.2.1-2.fc23.x86_64                       @rpmfusion-free-updates
    Actualizado              mplayer-common-1.2.1-1.fc23.x86_64                @rpmfusion-free-updates
    Actualizar                              1.2.1-2.fc23.x86_64                @rpmfusion-free-updates
    Actualizado              p7zip-plugins-15.09-9.fc23.x86_64                 @updates
    Actualizar                             15.14.1-1.fc23.x86_64               @updates
    Actualizado              packagedb-cli-2.10-2.fc23.noarch                  @updates
    Actualizar                             2.12-1.fc23.noarch                  @updates
    Actualizado              plasma-desktop-5.5.5-2.fc23.x86_64                @updates
    Actualizar                              5.5.5-5.fc23.x86_64                @updates
    Actualizado              plasma-desktop-doc-5.5.5-2.fc23.noarch            @updates
    Actualizar                                  5.5.5-5.fc23.noarch            @updates
    Actualizado              plasma-workspace-5.5.5-4.fc23.x86_64              @updates
    Actualizar                                5.5.5-5.fc23.x86_64              @updates
    Actualizado              plasma-workspace-common-5.5.5-4.fc23.x86_64       @updates
    Actualizar                                       5.5.5-5.fc23.x86_64       @updates
    Actualizado              plasma-workspace-libs-5.5.5-4.fc23.x86_64         @updates
    Actualizar                                     5.5.5-5.fc23.x86_64         @updates
    Actualizado              protobuf-c-1.1.1-2.fc23.x86_64                    (unknown)
    Actualizar                          1.2.1-1.fc23.x86_64                    @updates
    Actualizado              python-2.7.10-8.fc23.x86_64                       (unknown)
    Actualizar                      2.7.11-3.fc23.x86_64                       @updates
    Actualizado              python-devel-2.7.10-8.fc23.x86_64                 (unknown)
    Actualizar                            2.7.11-3.fc23.x86_64                 @updates
    Actualizado              python-libs-2.7.10-8.fc23.x86_64                  (unknown)
    Actualizar                           2.7.11-3.fc23.x86_64                  @updates
    Obsoleto                 python-macros-2.7.10-8.fc23.noarch                (unknown)
    Convirtiendo en obsoleto python-rpm-macros-3-7.fc23.noarch                 @updates
    Instalar                 python-rpm-macros-3-7.fc23.noarch                 @updates
    Instalar                 python-srpm-macros-3-7.fc23.noarch                @updates
    Actualizado              python-tools-2.7.10-8.fc23.x86_64                 (unknown)
    Actualizar                            2.7.11-3.fc23.x86_64                 @updates
    Instalar                 python2-rpm-macros-3-7.fc23.noarch                @updates
    Actualizado              python3-3.4.3-5.fc23.x86_64                       (unknown)
    Actualizar                       3.4.3-6.fc23.x86_64                       @updates
    Actualizado              python3-devel-3.4.3-5.fc23.x86_64                 (unknown)
    Actualizar                             3.4.3-6.fc23.x86_64                 @updates
    Actualizado              python3-libs-3.4.3-5.fc23.x86_64                  (unknown)
    Actualizar                            3.4.3-6.fc23.x86_64                  @updates
    Instalar                 python3-rpm-macros-3-7.fc23.noarch                @updates
    Actualizado              python3-tkinter-3.4.3-5.fc23.x86_64               (unknown)
    Actualizar                               3.4.3-6.fc23.x86_64               @updates
    Actualizado              python3-tools-3.4.3-5.fc23.x86_64                 (unknown)
    Actualizar                             3.4.3-6.fc23.x86_64                 @updates
    Actualizado              redhat-rpm-config-36-1.fc23.noarch                (unknown)
    Actualizar                                 36-1.fc23.1.noarch              @updates
    Actualizado              rpcbind-0.2.3-6.rc1.fc23.x86_64                   @updates
    Actualizar                       0.2.3-7.rc1.fc23.x86_64                   @updates
    Actualizado              sddm-breeze-5.5.5-4.fc23.noarch                   @updates
    Actualizar                           5.5.5-5.fc23.noarch                   @updates
    Actualizado              selinux-policy-3.13.1-158.11.fc23.noarch          @updates
    Actualizar                              3.13.1-158.12.fc23.noarch          @updates
    Actualizado              selinux-policy-targeted-3.13.1-158.11.fc23.noarch @updates
    Actualizar                                       3.13.1-158.12.fc23.noarch @updates
    Actualizado              tkinter-2.7.10-8.fc23.x86_64                      (unknown)
    Actualizar                       2.7.11-3.fc23.x86_64                      @updates
    Actualizado              xorg-x11-server-Xorg-1.18.1-3.fc23.x86_64         @updates
    Actualizar                                    1.18.3-1.fc23.x86_64         @updates
    Actualizado              xorg-x11-server-common-1.18.1-3.fc23.x86_64       @updates
    Actualizar                                      1.18.3-1.fc23.x86_64       @updates
    Actualizado              eclipse-changelog-2:4.2.1-4.fc23.noarch           @updates
    Actualizar                                 2:4.2.2-1.fc23.noarch           @updates

Comment 2 Reartes Guillermo 2016-05-06 21:58:26 UTC
Created attachment 1154746 [details]
xession errors

Comment 3 Reartes Guillermo 2016-05-06 21:59:54 UTC
Additional Info:

00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09)
        Subsystem: Lenovo Device [17aa:21ce]
        Kernel driver in use: i915
        Kernel modules: i915

Comment 4 Reartes Guillermo 2016-05-06 22:02:08 UTC
Created attachment 1154747 [details]
xorg log

Comment 5 Reartes Guillermo 2016-05-06 22:32:14 UTC
Tried with SELinux in permissive. No changes.

# abrt-cli list
id e25696ce1d844ad613f8a6abb517d18055de0b01
reason:         plasmashell killed by SIGSEGV
time:           vie 06 may 2016 19:28:25 ART
cmdline:        /usr/bin/plasmashell --shut-up
package:        plasma-workspace-5.6.2-1.fc23
uid:            1000 (greartes)
count:          1
Directory:      /var/spool/abrt/ccpp-2016-05-06-19:28:25-2949



# cat component 
plasma-workspace

# cat reason 
plasmashell killed by SIGSEGV[root@clawmark ccpp-2016-05-06-19:28:25-2949

# cat core_backtrace 
{   "signal": 11
,   "executable": "/usr/bin/plasmashell"
,   "only_crash_thread": true
,   "stacktrace":
      [ {   "crash_thread": true
        ,   "frames":
              [ {   "address": 139931862071960
                ,   "build_id": "0a15127555c58899c526c93ca5a88422dac0fdd2"
                ,   "build_id_offset": 215704
                ,   "function_name": "raise"
                ,   "file_name": "/usr/lib64/libc-2.22.so"
                }
              , {   "address": 139931978149596
                ,   "build_id": "9be41f1868a65e4e93fc8216696b6a13da8059b0"
                ,   "build_id_offset": 16092
                ,   "function_name": "KCrash::defaultCrashHandler(int)"
                ,   "file_name": "/usr/lib64/libKF5Crash.so.5.21.0"
                }
              , {   "address": 139931862072096
                ,   "build_id": "0a15127555c58899c526c93ca5a88422dac0fdd2"
                ,   "build_id_offset": 215840
                ,   "file_name": "/usr/lib64/libc-2.22.so"
                }
              , {   "address": 139928377960337
                ,   "build_id": "b068acdd9882cb884d60855ebe41df34ceda95e4"
                ,   "build_id_offset": 63377
                ,   "function_name": "void std::__introsort_loop<QList<QSharedPointer<NetworkManager::ActiveConnection> >::iterator, int, __gnu_cxx::__ops::_Iter_comp_iter<NetworkStatus::changeActiveConnections()::{lambda(QSharedPointer<NetworkManager::ActiveConnection> const&, QSharedPointer<NetworkManager::ActiveConnection> const&)#2}> >(QList<QSharedPointer<NetworkManager::ActiveConnection> >::iterator, __gnu_cxx::__ops::_Iter_comp_iter<NetworkStatus::changeActiveConnections()::{lambda(QSharedPointer<NetworkManager::ActiveConnection> const&, QSharedPointer<NetworkManager::ActiveConnection> const&)#2}>, int, __gnu_cxx::__ops::_Iter_comp_iter<NetworkStatus::changeActiveConnections()::{lambda(QSharedPointer<NetworkManager::ActiveConnection> const&, QSharedPointer<NetworkManager::ActiveConnection> const&)#2}>)"
                ,   "file_name": "/usr/lib64/qt5/qml/org/kde/plasma/networkmanagement/libplasmanm_qmlplugins.so"
                }
              , {   "address": 139928377962936
                ,   "build_id": "b068acdd9882cb884d60855ebe41df34ceda95e4"
                ,   "build_id_offset": 65976
                ,   "function_name": "NetworkStatus::changeActiveConnections() [clone .part.48]"
                ,   "file_name": "/usr/lib64/qt5/qml/org/kde/plasma/networkmanagement/libplasmanm_qmlplugins.so"
                }
              , {   "address": 139928377968436
                ,   "build_id": "b068acdd9882cb884d60855ebe41df34ceda95e4"
                ,   "build_id_offset": 71476
                ,   "function_name": "NetworkStatus::statusChanged(NetworkManager::Status)"
                ,   "file_name": "/usr/lib64/qt5/qml/org/kde/plasma/networkmanagement/libplasmanm_qmlplugins.so"
                }
              , {   "address": 139931877622750
                ,   "build_id": "ca3e42ce3594486b152290b555d13256d928dab3"
                ,   "build_id_offset": 2806750
                ,   "function_name": "QMetaObject::activate(QObject*, int, int, void**)"
                ,   "file_name": "/usr/lib64/libQt5Core.so.5.6.0"
                }
              , {   "address": 139928369906830
                ,   "build_id": "1d39a44200a419a3707a31d1a7663d0527ce2812"
                ,   "build_id_offset": 1012878
                ,   "function_name": "NetworkManager::Notifier::statusChanged(NetworkManager::Status)"
                ,   "file_name": "/usr/lib64/libKF5NetworkManagerQt.so.5.21.0"
                }
              , {   "address": 139928369330195
                ,   "build_id": "1d39a44200a419a3707a31d1a7663d0527ce2812"
                ,   "build_id_offset": 436243
                ,   "function_name": "NetworkManager::NetworkManagerPrivate::propertiesChanged(QMap<QString, QVariant> const&)"
                ,   "file_name": "/usr/lib64/libKF5NetworkManagerQt.so.5.21.0"
                }
              , {   "address": 139928369967797
                ,   "build_id": "1d39a44200a419a3707a31d1a7663d0527ce2812"
                ,   "build_id_offset": 1073845
                ,   "function_name": "NetworkManager::NetworkManagerPrivate::qt_metacall(QMetaObject::Call, int, void**)"
                ,   "file_name": "/usr/lib64/libKF5NetworkManagerQt.so.5.21.0"
                }
              , {   "address": 139931885796291
                ,   "build_id": "de788b2434e001c8196e0d9b0911a82ede73fa73"
                ,   "build_id_offset": 134083
                ,   "function_name": "QDBusConnectionPrivate::deliverCall(QObject*, int, QDBusMessage const&, QVector<int> const&, int)"
                ,   "file_name": "/usr/lib64/libQt5DBus.so.5.6.0"
                }
              , {   "address": 139931877625561
                ,   "build_id": "ca3e42ce3594486b152290b555d13256d928dab3"
                ,   "build_id_offset": 2809561
                ,   "function_name": "QObject::event(QEvent*)"
                ,   "file_name": "/usr/lib64/libQt5Core.so.5.6.0"
                }
              , {   "address": 139931887655948
                ,   "build_id": "ccdd7944b437751631335c987ea4803329cc9193"
                ,   "build_id_offset": 1428492
                ,   "function_name": "QApplicationPrivate::notify_helper(QObject*, QEvent*)"
                ,   "file_name": "/usr/lib64/libQt5Widgets.so.5.6.0"
                }
              , {   "address": 139931887677078
                ,   "build_id": "ccdd7944b437751631335c987ea4803329cc9193"
                ,   "build_id_offset": 1449622
                ,   "function_name": "QApplication::notify(QObject*, QEvent*)"
                ,   "file_name": "/usr/lib64/libQt5Widgets.so.5.6.0"
                }
              , {   "address": 139931877439848
                ,   "build_id": "ca3e42ce3594486b152290b555d13256d928dab3"
                ,   "build_id_offset": 2623848
                ,   "function_name": "QCoreApplication::notifyInternal2(QObject*, QEvent*)"
                ,   "file_name": "/usr/lib64/libQt5Core.so.5.6.0"
                }
              , {   "address": 139931877447722
                ,   "build_id": "ca3e42ce3594486b152290b555d13256d928dab3"
                ,   "build_id_offset": 2631722
                ,   "function_name": "QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*)"
                ,   "file_name": "/usr/lib64/libQt5Core.so.5.6.0"
                }
              , {   "address": 139931877787875
                ,   "build_id": "ca3e42ce3594486b152290b555d13256d928dab3"
                ,   "build_id_offset": 2971875
                ,   "function_name": "postEventSourceDispatch(_GSource*, int (*)(void*), void*)"
                ,   "file_name": "/usr/lib64/libQt5Core.so.5.6.0"
                }
              , {   "address": 139931790339642
                ,   "build_id": "a525646d5c1f4e0242bfe2e744734b2dcb5be57f"
                ,   "build_id_offset": 302650
                ,   "function_name": "g_main_context_dispatch"
                ,   "file_name": "/usr/lib64/libglib-2.0.so.0.4600.2"
                }
              , {   "address": 139931790340560
                ,   "build_id": "a525646d5c1f4e0242bfe2e744734b2dcb5be57f"
                ,   "build_id_offset": 303568
                ,   "function_name": "g_main_context_iterate.isra.29"
                ,   "file_name": "/usr/lib64/libglib-2.0.so.0.4600.2"
                }
              , {   "address": 139931790340732
                ,   "build_id": "a525646d5c1f4e0242bfe2e744734b2dcb5be57f"
                ,   "build_id_offset": 303740
                ,   "function_name": "g_main_context_iteration"
                ,   "file_name": "/usr/lib64/libglib-2.0.so.0.4600.2"
                }
              , {   "address": 139931877788911
                ,   "build_id": "ca3e42ce3594486b152290b555d13256d928dab3"
                ,   "build_id_offset": 2972911
                ,   "function_name": "QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)"
                ,   "file_name": "/usr/lib64/libQt5Core.so.5.6.0"
                }
              , {   "address": 139931877431018
                ,   "build_id": "ca3e42ce3594486b152290b555d13256d928dab3"
                ,   "build_id_offset": 2615018
                ,   "function_name": "QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)"
                ,   "file_name": "/usr/lib64/libQt5Core.so.5.6.0"
                }
              , {   "address": 139931877465564
                ,   "build_id": "ca3e42ce3594486b152290b555d13256d928dab3"
                ,   "build_id_offset": 2649564
                ,   "function_name": "QCoreApplication::exec()"
                ,   "file_name": "/usr/lib64/libQt5Core.so.5.6.0"
                }
              , {   "address": 94050793361942
                ,   "build_id": "6695583b997cddaedb42a91cb05c7adf326eabbb"
                ,   "build_id_offset": 127510
                ,   "function_name": "main"
                ,   "file_name": "/usr/bin/plasmashell"
                } ]
        } ]
}

Comment 6 Reartes Guillermo 2016-05-09 18:12:57 UTC
I tried older kernels, got same result.

I enabled and updated to updates-testing, got same results.

I can execute (alt+f2) plasmashell, it appears for some seconds and it crashes to black inmediatelly.

I will try to generate a local traceback for abrt.

Comment 7 Reartes Guillermo 2016-05-09 19:05:04 UTC
i was able to generate a backtrace locally and abrt created BZ #1334498 (which is a private dup of BZ #1259472.

basically plasmashell is crashing after 1 second.

Comment 8 Reartes Guillermo 2016-05-09 20:15:00 UTC
[  156.509773] show_signal_msg: 6 callbacks suppressed
[  156.509777] plasmashell[3262]: segfault at 0 ip 00007f996bbab781 sp 00007ffd715427e0 error 4 in libplasmanm_qmlplugins.so[7f996bb9c000+1d000]
[  159.007917] Adjusting tsc more than 11% (7781480 vs 7473285)
[  191.885486] traps: plasmashell[3462] general protection ip:7f5747def781 sp:7ffe66fe7950 error:0 in libplasmanm_qmlplugins.so[7f5747de0000+1d000]

Tried downgrading the package... 

root@clawmark ~]# dnf downgrade plasma-nm --allowerasing
Última comprobación de caducidad de metadatos hecha hace 2:21:26, el Mon May  9 14:34:04 2016.
Dependencias resueltas.
==============================================================================================================================================================================================
 Package                                                Arquitectura                            Versión                                         Repositorio                             Tamaño
==============================================================================================================================================================================================
Desactualizando:
 plasma-nm                                              x86_64                                  5.4.2-1.fc23                                    fedora                                  728 k
 plasma-nm-l2tp                                         x86_64                                  5.4.2-1.fc23                                    fedora                                   74 k
 plasma-nm-openconnect                                  x86_64                                  5.4.2-1.fc23                                    fedora                                   82 k
 plasma-nm-openswan                                     x86_64                                  5.4.2-1.fc23                                    fedora                                   54 k
 plasma-nm-openvpn                                      x86_64                                  5.4.2-1.fc23                                    fedora                                  132 k
 plasma-nm-pptp                                         x86_64                                  5.4.2-1.fc23                                    fedora                                   64 k
 plasma-nm-vpnc                                         x86_64                                  5.4.2-1.fc23                                    fedora                                  101 k

Resumen de la transacción
==============================================================================================================================================================================================
Desactualizar  7 Paquetes

Tamaño total de la descarga: 1.2 M
¿Está de acuerdo [s/N]?: n
Operación abortada.
[root@clawmark ~]# reboot

Same results, so i tried another downgrade...

[root@clawmark ~]# dnf downgrade plasma-nm --allowerasing
Última comprobación de caducidad de metadatos hecha hace 2:30:17, el Mon May  9 14:34:04 2016.
Dependencias resueltas.
==============================================================================================================================================================================================
 Package                                                Arquitectura                            Versión                                         Repositorio                             Tamaño
==============================================================================================================================================================================================
Desactualizando:
 plasma-nm                                              x86_64                                  5.4.2-1.fc23                                    fedora                                  728 k
 plasma-nm-l2tp                                         x86_64                                  5.4.2-1.fc23                                    fedora                                   74 k
 plasma-nm-openconnect                                  x86_64                                  5.4.2-1.fc23                                    fedora                                   82 k
 plasma-nm-openswan                                     x86_64                                  5.4.2-1.fc23                                    fedora                                   54 k
 plasma-nm-openvpn                                      x86_64                                  5.4.2-1.fc23                                    fedora                                  132 k
 plasma-nm-pptp                                         x86_64                                  5.4.2-1.fc23                                    fedora                                   64 k
 plasma-nm-vpnc                                         x86_64                                  5.4.2-1.fc23                                    fedora                                  101 k

Resumen de la transacción
==============================================================================================================================================================================================
Desactualizar  7 Paquetes

Tamaño total de la descarga: 1.2 M
¿Está de acuerdo [s/N]?: y
Descargando paquetes:
(1/7): plasma-nm-l2tp-5.4.2-1.fc23.x86_64.rpm                                                                                                                  12 kB/s |  74 kB     00:06    
(2/7): plasma-nm-openconnect-5.4.2-1.fc23.x86_64.rpm                                                                                                           13 kB/s |  82 kB     00:06    
(3/7): plasma-nm-5.4.2-1.fc23.x86_64.rpm                                                                                                                       99 kB/s | 728 kB     00:07    
(4/7): plasma-nm-openswan-5.4.2-1.fc23.x86_64.rpm                                                                                                              30 kB/s |  54 kB     00:01    
(5/7): plasma-nm-openvpn-5.4.2-1.fc23.x86_64.rpm                                                                                                               64 kB/s | 132 kB     00:02    
(6/7): plasma-nm-pptp-5.4.2-1.fc23.x86_64.rpm                                                                                                                  36 kB/s |  64 kB     00:01    
(7/7): plasma-nm-vpnc-5.4.2-1.fc23.x86_64.rpm                                                                                                                  48 kB/s | 101 kB     00:02    
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                                                         101 kB/s | 1.2 MB     00:12     
Ejecutando verificación de operación
Verificación de operación exitosa.
Ejecutando prueba de operaciones
Prueba de operación exitosa.
Ejecutando operación
  Desactualizando         : plasma-nm-5.4.2-1.fc23.x86_64                                                                                                                                1/14 
  Desactualizando         : plasma-nm-l2tp-5.4.2-1.fc23.x86_64                                                                                                                           2/14 
  Desactualizando         : plasma-nm-openconnect-5.4.2-1.fc23.x86_64                                                                                                                    3/14 
  Desactualizando         : plasma-nm-openswan-5.4.2-1.fc23.x86_64                                                                                                                       4/14 
  Desactualizando         : plasma-nm-openvpn-5.4.2-1.fc23.x86_64                                                                                                                        5/14 
  Desactualizando         : plasma-nm-pptp-5.4.2-1.fc23.x86_64                                                                                                                           6/14 
  Desactualizando         : plasma-nm-vpnc-5.4.2-1.fc23.x86_64                                                                                                                           7/14 
  Eliminando              : plasma-nm-vpnc-5.6.2-1.fc23.x86_64                                                                                                                           8/14 
  Eliminando              : plasma-nm-pptp-5.6.2-1.fc23.x86_64                                                                                                                           9/14 
  Eliminando              : plasma-nm-openvpn-5.6.2-1.fc23.x86_64                                                                                                                       10/14 
  Eliminando              : plasma-nm-openswan-5.6.2-1.fc23.x86_64                                                                                                                      11/14 
  Eliminando              : plasma-nm-openconnect-5.6.2-1.fc23.x86_64                                                                                                                   12/14 
  Eliminando              : plasma-nm-l2tp-5.6.2-1.fc23.x86_64                                                                                                                          13/14 
  Eliminando              : plasma-nm-5.6.2-1.fc23.x86_64                                                                                                                               14/14 
  Verificando             : plasma-nm-5.4.2-1.fc23.x86_64                                                                                                                                1/14 
  Verificando             : plasma-nm-l2tp-5.4.2-1.fc23.x86_64                                                                                                                           2/14 
  Verificando             : plasma-nm-openconnect-5.4.2-1.fc23.x86_64                                                                                                                    3/14 
  Verificando             : plasma-nm-openswan-5.4.2-1.fc23.x86_64                                                                                                                       4/14 
  Verificando             : plasma-nm-openvpn-5.4.2-1.fc23.x86_64                                                                                                                        5/14 
  Verificando             : plasma-nm-pptp-5.4.2-1.fc23.x86_64                                                                                                                           6/14 
  Verificando             : plasma-nm-vpnc-5.4.2-1.fc23.x86_64                                                                                                                           7/14 
  Verificando             : plasma-nm-5.6.2-1.fc23.x86_64                                                                                                                                8/14 
  Verificando             : plasma-nm-l2tp-5.6.2-1.fc23.x86_64                                                                                                                           9/14 
  Verificando             : plasma-nm-openconnect-5.6.2-1.fc23.x86_64                                                                                                                   10/14 
  Verificando             : plasma-nm-openswan-5.6.2-1.fc23.x86_64                                                                                                                      11/14 
  Verificando             : plasma-nm-openvpn-5.6.2-1.fc23.x86_64                                                                                                                       12/14 
  Verificando             : plasma-nm-pptp-5.6.2-1.fc23.x86_64                                                                                                                          13/14 
  Verificando             : plasma-nm-vpnc-5.6.2-1.fc23.x86_64                                                                                                                          14/14 

Desactualizado:
  plasma-nm.x86_64 5.4.2-1.fc23                 plasma-nm-l2tp.x86_64 5.4.2-1.fc23         plasma-nm-openconnect.x86_64 5.4.2-1.fc23         plasma-nm-openswan.x86_64 5.4.2-1.fc23        
  plasma-nm-openvpn.x86_64 5.4.2-1.fc23         plasma-nm-pptp.x86_64 5.4.2-1.fc23         plasma-nm-vpnc.x86_64 5.4.2-1.fc23               

¡Listo!
[root@clawmark ~]# reboot

Afer reboot, the issue disapeared!

So by downgrading 2 times kde works fine, no black screen.

Comment 9 Fedora End Of Life 2016-11-25 08:58:10 UTC
This message is a reminder that Fedora 23 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 23. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '23'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

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able to fix it before Fedora 23 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

Comment 10 Fedora End Of Life 2016-12-20 20:23:21 UTC
Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is
no longer maintained, which means that it will not receive any further
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