Bug 453846

Summary:	Running spectacle under wayland gives a message "Could not take a screenshot. Please report this bug here.
Product:	[Applications] Spectacle	Reporter:	DaveK <dave>
Component:	General	Assignee:	Boudhayan Gupta <me>
Status:	RESOLVED WAITINGFORINFO
Severity:	normal	CC:	bharadwaj.raju777, bugsKde, forward.horizon, justin.zobel, kde, postix
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description DaveK 2022-05-15 18:24:51 UTC

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE
1.  Start Spectacle from the start menu or the command line.
2.  Try to take a screenshot.
3. Receive error message.

OBSERVED RESULT
Get error message.

EXPECTED RESULT
Screenshot is taken.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Kubuntu 22.04
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3

ADDITIONAL INFORMATION
Kernel version : 5.15.0-generic

If I start spectacle from the command line, I get an error message and spectacle exits: "QSocketNotifier: Can only be used with threads started with QThread".

Comment 1 DaveK 2022-05-15 18:36:02 UTC

Spectacle version 21.12.3.

Comment 2 postix 2022-07-28 12:25:13 UTC

*** Bug 456758 has been marked as a duplicate of this bug. ***

Comment 3 forward.horizon 2022-09-18 01:51:39 UTC

Getting the same error message from spectacle gui when hitting print screen on keyboard.

Opening via Konsole gives:
:~$ spectacle
Error calling KWin DBus interface: "org.freedesktop.DBus.Error.UnknownObject" "No such object path '/Screenshot'"
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
QPixmap::scaled: Pixmap is a null pixmap

kde-spectacle/focal,now 22.08.1-0xneon+20.04+focal+release+build59
Operating System: KDE neon 5.25
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6
Kernel Version: 5.15.0-41-generic (64-bit)
Graphics Platform: Wayland

Comment 4 Bharadwaj Raju 2022-10-03 09:32:49 UTC

Does `spectacle --new-instance` have the same behavior?

Comment 5 Justin Zobel 2022-11-11 07:14:23 UTC

Awaiting user reply.

Comment 6 DaveK 2022-11-17 18:54:11 UTC

As of KDE Plasma Version 5.24.6 & KDE Frameworks Version 5.92.0 & Qt Version: 5.15.3 this problem no longer exists on my system......