Bug 442301

Summary: system monitor sensor widget: "could not prompt the user for which application to start"
Product: [Plasma] plasmashell Reporter: Petr <pm>
Component: System Monitor widgetsAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal CC: adem4ik, ahiemstra, djkork, lemuelsimon32, masavini, nate, notmart, postix, zorael
Priority: NOR    
Version First Reported In: 5.22.4   
Target Milestone: 1.0   
Platform: Fedora RPMs   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=445530
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Petr 2021-09-11 11:38:32 UTC
SUMMARY
placed widget "system monitor sensor" on panel. right-click on "open system monitor" raises above error.

EXPECTED RESULT
a) no error b) i'd like to configure, which app to launch (like the mysteriously disappeared cpu-widget i had previously, which started KSysGuard)

Operating System: Fedora 34
KDE Plasma Version: 5.22.4
KDE Frameworks Version: 5.85.0
Qt Version: 5.15.2
Kernel Version: 5.13.14-200.fc34.x86_64 (64-bit)
Graphics Platform: X11
Processors: 4 × AMD Athlon(tm) X4 750K Quad Core Processor
Memory: 15.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 750 Ti/PCIe/SSE2

ADDITIONAL INFORMATION
just upgraded from fedora 33 to fedora 34, which also brought in new versions of plasma/framework.
Comment 1 postix 2021-11-15 13:01:01 UTC
FWIW I cannot reproduce it on

Operating System: Fedora Linux 35
KDE Plasma Version: 5.22.5
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2
Kernel Version: 5.14.17-301.fc35.x86_64 (64-bit)
Graphics Platform: X11
Comment 2 Nate Graham 2021-12-14 20:51:04 UTC
*** Bug 446791 has been marked as a duplicate of this bug. ***
Comment 3 Nate Graham 2021-12-14 20:53:08 UTC
Works for me with current git master on Fedora 35.
Comment 4 Lemuel Simon 2022-06-25 16:11:04 UTC
I can reproduce this problem on the System Monitor Widget with Plasma version 5.25.1.  Was just about to make a bug report about it, but it seems like it already existed.

Operating System: openSUSE Leap 15.4
KDE Plasma Version: 5.25.1
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.2
Kernel Version: 5.14.21-150400.22-default (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-3320M CPU @ 2.60GHz
Memory: 7.6 GiB of RAM
Graphics Processor: Mesa DRI Intel® HD Graphics 4000
Comment 5 Ignacio Felipe Medina 2023-01-25 12:03:31 UTC
I think that this is not really a bug.
A change have been made and if you select to launch "system monitor" plasma-systemmonitor is launched. KSysGuard is not launched anymore. They are different applications.

If you try to perform these actions without having "plasma-systemmonitor" installed you get "could not prompt the user for which application to start" message.

But if you install "plasma-systemmonitor" on your computer... it will be lauched successfully every time it is requested from any widget.