Bug 472649

Summary:	kscreen-doctor hangs when called from a global shortcut
Product:	[Plasma] KScreen	Reporter:	Stephane Travostino <sph>
Component:	kscreen-doctor	Assignee:	kscreen-bugs-null <kscreen-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	nate, wafixa5827, xaver.hugl, XsrUHqq8MN
Priority:	NOR
Version First Reported In:	5.27.6
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Stephane Travostino 2023-07-26 08:19:59 UTC

SUMMARY

If I programmatically toggle on/off a monitor with kscreen-doctor from a global KDE shortcut, the process just hangs and the screen is never toggled. The same exact invocation on the command line succeeds.


STEPS TO REPRODUCE
1. Go in the settings, and create a keyboard shortcut to enable/disable your monitor. In my case, `kscreen-doctor output.DP-3.enable/disable`
2. Execute the shortcut
3. Notice that nothing happens and that the kscreen-doctor process hangs and needs to be killed
4. Execute the same command in a shell, and notice that it executes successfully

OBSERVED RESULT

Nothing happens and that the kscreen-doctor process hangs and needs to be killed. The exact same command run in the shell, or pinned on the Task Manager works as expected.

EXPECTED RESULT

kscreen-doctor command to run successfully without hanging.


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 38 Kinoite / Wayland
KDE Plasma Version: 5.27.6
KDE Frameworks Version: 5.108.0
Qt Version: 5.15.10

Comment 1 jasonlandbridge 2023-09-12 20:28:52 UTC

Same issue here, I can provide some logs but from what I can tell, it hangs the moment it needs to be enabled

Comment 2 wafixa5827 2023-10-21 21:24:35 UTC

I have a related (possibly same) problem on 5.27.8 (Arch).

When I run a command such as: kscreen-doctor output.DP-2.mode.2560x1440@165 output.DP-2.position.0,0

This is my output:

kscreen.doctor: Taddaaa! Found mode "1" "2560x1440@165"
kscreen.doctor: Output 1 set mode "2560x1440@165"
kscreen.doctor: Output position QPoint(0,0)
kscreen.doctor: Set output position QPoint(0,0)
kscreen.doctor: setop exec returned KScreen::Config( 
KScreen::Output(1, "DP-2", connected enabled priority 1, pos: QPoint(0,0), res: QSize(1920, 1080), modeId: "1", scale: 1.5, clone: no, rotation: KScreen::Output::None, followPreferredMode: false) 
KScreen::Output(2, "HDMI-A-1", connected disabled priority 0, pos: QPoint(1707,0), res: QSize(1920, 1080), modeId: "0", scale: 1, clone: no, rotation: KScreen::Output::None, followPreferredMode: false) )
[a@aPC ~]$ Initializing  "/usr/lib/qt/plugins/plasma/kcms/systemsettings/kcm_fonts.so"


Please notice the last line. You can see my shell prompt followed by "Initializing ... kcm_fonts.so"
It hangs here unless I press ENTER.

Comment 3 Zamundaaa 2025-01-10 17:36:32 UTC

Can't reproduce in Plasma 6.2, the command is executed without a problem