I have installed KDE Plasma 5.12.9 on my Ubuntu 18.04 installation via sudo apt install kde-full sudo apt install kubuntu-desktop.

Problem is, whenever I click on Startup and Shutdown in System Settings, the whole settings window hangs up in an endless loading. Needless to say, this is pretty annoying as I can't configure my startup apps and can't adjust the login screen.

I'm not sure how to debug this problem, and how to solve it. Could you guys help me out?

Code: Select all

System info:

KDE Plasma version: 5.12.9
KDE Frameworks version: 5.47.0
QT version: 5.9.5
Kernel version: 5.3.0-59-generic
OS type: 64-bit
Processors: 12 x Intel Xeon CPU E5-1650 v2 @ 3.50GHz
Memory: 15.6GiB of RAM


I strongly suggest you upgrade to 20.04 LTS first, unless you work in a corporate environment where older LTS have a reason to exist, it makes little sense to stay with such an old Plasma version.
Also, just installing the plasma shell is probably not enough, installing the "kubuntu-desktop" package will bring in all necessary dependencies

Mamarok wrote:I strongly suggest you upgrade to 20.04 LTS first, unless you work in a corporate environment where older LTS have a reason to exist, it makes little sense to stay with such an old Plasma version.

I would say the same, but unfortunately it is a corporate environment. i have sudo access to my workstation and have a very loose hand in what I do with it, but has to stick with 18.04.

Mamarok wrote:Also, just installing the plasma shell is probably not enough, installing the "kubuntu-desktop" package will bring in all necessary dependencies

Ops sorry, I installed the "kubuntu-desktop" package. I was a bit confused, but I chose the most complete package, so it must've been this one.

Well, "kde-full" installs the KDE applications, while "kubuntu-desktop" installs Plasma, if you want to have both you will probably have to install both

well I sudo apt install-ed both, and now the whole system settings just crashes.

KCrash generates this report:

Code: Select all

Application: System Settings (systemsettings5), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2b4478d0c0 (LWP 18640))]

Thread 5 (Thread 0x7f2b118e4700 (LWP 18718)):
#0  0x00007ffd51da599a in clock_gettime ()
#1  0x00007f2b4015dea6 in __GI___clock_gettime (clock_id=1, tp=0x7f2b118e3af0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f2b40a8a1c1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f2b40a889f9 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2b40a88fd5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2b40a8a61e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2b39fa0b28 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f2b39fa14fb in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f2b39fa16dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f2b40a8a8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2b40a2f90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f2b4084e23a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f2b3df7d6f5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f2b4085317d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f2b3fc116db in start_thread (arg=0x7f2b118e4700) at pthread_create.c:463
#15 0x00007f2b4014e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f2b199b2700 (LWP 18654)):
#0  0x00007f2b4013d0b4 in __GI___libc_read (fd=14, buf=0x7f2b199b1b70, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f2b39fe62b0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2b39fa10b7 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2b39fa1570 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2b39fa16dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2b40a8a8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2b40a2f90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2b4084e23a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2b3df7d6f5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f2b4085317d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2b3fc116db in start_thread (arg=0x7f2b199b2700) at pthread_create.c:463
#11 0x00007f2b4014e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f2b27f35700 (LWP 18643)):
#0  0x00007ffd51da599a in clock_gettime ()
#1  0x00007f2b4015dea6 in __GI___clock_gettime (clock_id=1, tp=0x7f2b27f34ae0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f2b40a8a1c1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f2b40a889f9 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2b40a88fd5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2b40a8a61e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2b39fa0b28 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f2b39fa14fb in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f2b39fa16dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f2b40a8a8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2b40a2f90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f2b4084e23a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f2b42394d45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#13 0x00007f2b4085317d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f2b3fc116db in start_thread (arg=0x7f2b27f35700) at pthread_create.c:463
#15 0x00007f2b4014e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f2b30f22700 (LWP 18642)):
#0  0x00007f2b40141bf9 in __GI___poll (fds=0x7f2b30f21ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f2b3bc7e747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f2b3bc8036a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f2b33ccf5e9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f2b4085317d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2b3fc116db in start_thread (arg=0x7f2b30f22700) at pthread_create.c:463
#6  0x00007f2b4014e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f2b4478d0c0 (LWP 18640)):
[KCrash Handler]
#6  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f2b4006d801 in __GI_abort () at abort.c:79
#8  0x00007f2b4083dfb7 in QMessageLogger::fatal(char const*, ...) const () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f2b3eafe9f0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#10 0x00007f2b3eafed5a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#11 0x00007f2b3eb00f8e in QQuickWidget::resizeEvent(QResizeEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#12 0x00007f2b41a80bf2 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f2b3eb019eb in QQuickWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#14 0x00007f2b41a4183c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f2b41a49104 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f2b40a318d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f2b41a790fb in QWidgetPrivate::sendPendingMoveAndResizeEvents(bool, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f2b41a7ced3 in QWidgetPrivate::show_helper() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f2b41a7fbeb in QWidget::setVisible(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f2b41a7ce40 in QWidgetPrivate::showChildren(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f2b41a7ceef in QWidgetPrivate::show_helper() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f2b41a7fbeb in QWidget::setVisible(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f2b41a63fc0 in QStackedLayout::setCurrentIndex(int) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f2b41a6467a in QStackedLayout::insertWidget(int, QWidget*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x0000562c588b7a24 in ?? ()
#26 0x0000562c588b99a4 in ?? ()
#27 0x00007f2b40a6d074 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f2b40a6107b in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f2b41a4183c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f2b41a49104 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f2b40a318d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f2b40a89d2e in QTimerInfoList::activateTimers() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f2b40a8a4f1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f2b39fa1417 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f2b39fa1650 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f2b39fa16dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f2b40a8a88f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f2b40a2f90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f2b40a389b4 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x0000562c588b4e44 in ?? ()
#41 0x00007f2b4004eb97 in __libc_start_main (main=0x562c588b4a40, argc=1, argv=0x7ffd51cf3468, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd51cf3458) at ../csu/libc-start.c:310
#42 0x0000562c588b4eca in _start ()


Please try with a new user, there is very likely something wrong in your installation.