I reported this first here: https://bugs.kde.org/show_bug.cgi?id=457004 (reading the forums it seems that you are supposed to report bugs here first but I didn't know that)

the win7 volume mixer widget crashes plasma when I click the hdmi box icon (or any output) for the second time (happens consistently)



Application: plasmashell (5.24.4)

Qt Version: 5.15.3
Frameworks Version: 5.92.0
Operating System: Linux 5.15.0-41-generic x86_64
Windowing System: X11
Distribution: Ubuntu 22.04 LTS
DrKonqi: 5.24.4 [KCrashBackend]

-- Information about the crash:

What I was doing when the application crashed:
from the desktop panel (the system tray) I opened the widget "win7 volume mixer" clicking the icon, then I clicked the speakers icon (in my case HDMI) to check which audio profile is being used, if I do this again, next time it will crash, this happens everytime

Custom settings of the application:
no real custom settings, only worth noting is that both the default audio volume icon/item and the win7 volume mixer are enabled at the same time (I have both icons active in my system tray, which is how I want it) and I'm also using version 26 (v26)

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault

[KCrash Handler]
#4 0x00007f924442051b in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#5 0x00007f924443190f in QWidget::removeAction(QAction*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#6 0x00007f9229dd0d98 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/components/libplasmacomponentsplugin.so
#7 0x00007f92443f8713 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8 0x00007f9243701e2a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9 0x00007f9243737437 in QObjectPrivate::setParent_helper(QObject*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f9243737948 in QObject::~QObject() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f9229dcb82b in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/components/libplasmacomponentsplugin.so
#12 0x00007f924372f1b3 in QObject::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f92443f8713 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f9243701e2a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f9243704f17 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f924375ba57 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f9241addd1b in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f9241b326f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f9241adb3c3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f924375b0a8 in QEventDispatcherGlib::processEvents(QFlagsQEventLoop::ProcessEventsFlag) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f924370074b in QEventLoop::exec(QFlagsQEventLoop::ProcessEventsFlag) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f9243708ce4 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x0000560fd3d60dce in ?? ()
#24 0x00007f924301dd90 in __libc_start_call_main (main=main@entry=0x560fd3d5ff70, argc=argc@entry=1, argv=argv@entry=0x7ffefd8fc0b8) at ../sysdeps/nptl/libc_start_call_main.h:58
#25 0x00007f924301de40 in __libc_start_main_impl (main=0x560fd3d5ff70, argc=1, argv=0x7ffefd8fc0b8, init=, fini=, rtld_fini=, stack_end=0x7ffefd8fc0a8) at ../csu/libc-start.c:392
#26 0x0000560fd3d60ef5 in ?? ()
[Inferior 1 (process 1180) detached]

Possible duplicates by query: bug 456990, bug 456947, bug 456940, bug 456743, bug 456720.

Reported using DrKonqi

Please use https://bug.kde.org for crash reports only, the forum is the wrong place for this.

FWIW; you will need debugging symbols installed to get a meaningful backtrace, please check https://community.kde.org/Guidelines_an ... sh_reports before submitting your crash report.

True, it "crashes" if you click the icon twice. Must be a bug in the widget. I have to say, clicking it twice has no use really but hey...You could file a bug report on the kde store or https://github.com/Zren/plasma-applet-volumewin7mixer. Or use kmix.
Clicking an icon once should pop up something like this: https://imgur.com/a/H57CZUR