Bug 323524

Summary:	Visual corruption in information box
Product:	[Unmaintained] apper	Reporter:	Jason H. <ask1dth>
Component:	general	Assignee:	Daniel Nicoletti <dantti12>
Status:	RESOLVED UNMAINTAINED
Severity:	major	CC:	ask1dth, maxim.yegorushkin
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Example of corruption KDE display corruption in Apper KDE display corruption in Google Chrome tooltip Mouse pointer corruption after resume from suspend to ram

Description Jason H. 2013-08-15 04:05:20 UTC

When using Apper to browse packages, if the information panel at the bottom is hidden and you click on a package, then you get visual corruption in the information panel that slides in from the bottom. This can be cleared by clicking on another window and then back on Apper or by clicking the "More" drop-down and selecting a different view.

I've observed this behavior for several months now on two different machines, both running Arch Linux under KDE (with KWin). Since I think this is possibly a graphical bug, I will add that the first machine is using an AMD graphics card and I see the behavior with both the open source and proprietary drivers. The second machine is using an Nvidia graphics card and I have observed this behavior with the proprietary drivers. I have not tested it with the Nouveau driver.

Reproducible: Always

Steps to Reproduce:
1. Open Apper.
2. Navigate to any listing of packages (e.g., search for one or click "installed packages")
3. Click a package and expand the description panel at the bottom
Actual Results:  
Description panel is corrupted. It looks like the expansion animation somehow freezes or sticks (it's hard to describe, see the picture). 

Expected Results:  
Description panel is free of visual corruption.

The corruption can be cleared by clicking on another window and then back on Apper or by selecting a different information item. The glitch immediately reappears if you select a different package.

Comment 1 Jason H. 2013-08-15 04:06:48 UTC

Created attachment 81713 [details]
Example of corruption

Comment 2 Daniel Nicoletti 2013-08-15 23:42:25 UTC

Please use oxygen style, working around this issue isn't cool

Comment 3 Jason H. 2013-08-17 22:17:43 UTC

You're saying it's a bug with the Qt style, then?

Comment 4 Maxim Egorushkin 2015-08-15 13:55:53 UTC

I observe the same issue here with AMD radeon open source driver. In Apper and in Google Chrome.

Comment 5 Maxim Egorushkin 2015-08-15 13:56:39 UTC

Created attachment 94042 [details]
KDE display corruption in Apper

Comment 6 Maxim Egorushkin 2015-08-15 13:57:38 UTC

Created attachment 94043 [details]
KDE display corruption in Google Chrome tooltip

Comment 7 Maxim Egorushkin 2015-08-15 13:59:55 UTC

I also notice that upon resume the mouse pointer is corrupted until the mouse is moved to a place where the pointer has to change.

Comment 8 Maxim Egorushkin 2015-08-15 14:03:10 UTC

Created attachment 94045 [details]
Mouse pointer corruption after resume from suspend to ram

That white-greenish square in the top center is the mouse pointer.

Comment 9 Justin Zobel 2021-03-09 01:00:07 UTC

Thank you for the bug report.

As this report hasn't seen any changes in 5 years or more, we ask if you can please confirm that the issue still persists.

If this bug is no longer persisting or relevant please change the status to resolved.

Comment 10 Christoph Cullmann 2025-06-10 18:22:54 UTC

This project is unfortunately no longer maintained.

If a new maintainer wants to step up and take care, the project is archived here:

https://invent.kde.org/system/apper

You can just clone it in your private namespace on invent.kde.org and if you have started to work on it and fixed/implemented something get it reviewed and the project unarchived.

Sorry for the inconveniences.