Bug 29360

Summary:	Plasmashell memory leak when using slideshow
Product:	Mageia	Reporter:	Emmanuel ROBERT <temporis56>
Component:	RPM Packages	Assignee:	KDE maintainers <kde>
Status:	NEW ---	QA Contact:
Severity:	normal
Priority:	Normal	CC:	marja11
Version:	8
Target Milestone:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Source RPM:		CVE:
Status comment:

Description Emmanuel ROBERT 2021-08-11 22:25:24 CEST

Description of problem:
- Memory leak of the plasmashell process when using a slideshow 
- Plasmashell's memory occupation increases continuously
- Selecting a static background image as a replacement for the slideshow fixes the problem

Version-Release number of selected component :
- KDE Plasma 5.20.4
- One desktop, 4 activities including a slideshow
- KDE Frameworks 5.76.0
- Qt 5.15.2
- Kernel 5.10.56-desktop-.mga8
- OS 64-bit
- 16 Go RAM

How reproducible:
All the time

Steps to Reproduce:
1. create a folder containing two big pictures (2Mo each for instance)
2. create 4 activities with a slideshow (time 15s) pointing to the picture folder
3. visit all activities one time to start the leak
3. survey the memory consumption with the plasmoid

Comment 1 Emmanuel ROBERT 2021-08-11 23:52:28 CEST

I reboot the computer after step 2

Comment 2 Marja Van Waes 2021-08-12 16:58:51 CEST

Assigning to our KDE maintainers

Assignee: bugsquad => kde
CC: (none) => marja11

Comment 3 Emmanuel ROBERT 2021-08-17 10:40:52 CEST

I have launched kcmshell5 qtquicksettings 
set Render loop to "Basic"
and Rendering backend to "Software".
I noticed a degradation of the Plasma rendering : I can no longer see the text below my desktop icons, only the picture, but it stopped the leak. 
I can no longer reproduce the leak problem. Everything looks stable.

What is the explanation ?
Which software is the culprit ?
When will it be fixed in Mageia8 ?