Bug 425157

Summary:	Apps moved to the corners by "Window Aperture" show desktop animation are visible on lockscreen
Product:	[Plasma] kwin	Reporter:	Mark Smith <anonkun>
Component:	effects-various	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	andresbs2000, dev, kde, nate, nicolas.fella, romace1268, toluschr
Priority:	NOR
Version First Reported In:	5.19.5
Target Milestone:	---
Platform:	Other
OS:	Linux
See Also:	https://bugs.kde.org/show_bug.cgi?id=435691
Latest Commit:	https://invent.kde.org/plasma/kwin/commit/2a9971fa080876c21332049a0b249c43cc9764c9	Version Fixed/Implemented In:	5.22
Sentry Crash Report:

Description Mark Smith 2020-08-09 11:34:24 UTC

SUMMARY
Use the Window Aperture effect to show the desktop, then lock the screen by keyboard shortcut. The corners of windows that were moved to the corners by the Window Aperture effect will show up on the lockscreen. 

STEPS TO REPRODUCE
1. Show desktop by using the Window Aperture effect
2. Lock the screen with a keyboard shortcut (ie Winkey + L) 
3. Look at the corners of your Window displayed on the lockscreen as well

SOFTWARE/OS VERSIONS
SOFTWARE/OS VERSIONS
OS: KDE neon 5.19
Kernel: x86_64 Linux 5.3.0-51-generic
Uptime: 14m
Packages: 2157
Shell: bash 4.4.20
Resolution: 1680x1050
DE: KDE 5.72.0 / Plasma 5.19.4
WM: KWin
GTK Theme: Breeze-Dark [GTK2/3]
Icon Theme: breeze-dark

Comment 1 Bug Janitor Service 2020-08-10 09:34:02 UTC

A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/176

Comment 2 David Redondo 2020-08-10 11:42:02 UTC

Git commit 2a9971fa080876c21332049a0b249c43cc9764c9 by David Redondo.
Committed on 10/08/2020 at 09:34.
Pushed by davidre into branch 'master'.

Disable AnimationEffects when the screen is locked

M  +1    -1    libkwineffects/kwinanimationeffect.cpp

https://invent.kde.org/plasma/kwin/commit/2a9971fa080876c21332049a0b249c43cc9764c9

Comment 3 Nate Graham 2021-01-19 17:15:19 UTC

*** Bug 431527 has been marked as a duplicate of this bug. ***

Comment 4 David Redondo 2021-01-20 14:03:30 UTC

I can reproduce it again

Comment 5 David Redondo 2021-01-20 14:30:59 UTC

Hmm nevermind, after restarting KWin I actually can't

Comment 6 Nicolas Fella 2021-01-20 17:37:17 UTC

I can reproduce this on current master

Comment 7 toluschr 2021-01-30 16:50:57 UTC

Can reproduce

Comment 8 toluschr 2021-01-30 16:51:51 UTC

(In reply to toluschr from comment #7)
> Can reproduce

(on 5.20.5)

Comment 9 Nate Graham 2021-04-19 16:00:31 UTC

*** Bug 435691 has been marked as a duplicate of this bug. ***

Comment 10 Matty R 2021-05-31 11:28:55 UTC

Just discovered that i'm getting this issue also. 

Operating System: Arch Linux
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.82.0
Qt Version: 5.15.2
Kernel Version: 5.12.5-zen1-1-zen
OS Type: 64-bit
Graphics Platform: X11
Processors: 16 × AMD Ryzen 7 5800X 8-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1080 Ti/PCIe/SSE2

Comment 11 Nate Graham 2021-06-01 14:03:41 UTC

This has been effectively fixed  in Plasma 5.22 by reducing the opacity to 0 for the windows in the corner. So even if the underlying problem remains, it will no longer ever manifest in a visual problem.