Bug 469453

Summary:	Weird display behavior: flickering and lagging.
Product:	[Applications] digikam	Reporter:	xplosionmind <surfing>
Component:	Bundle-FlatPak	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED DOWNSTREAM
Severity:	normal	CC:	caulier.gilles, surfing
Priority:	NOR	Keywords:	wayland-only
Version:	8.0.0
Target Milestone:	---
Platform:	Flatpak
OS:	Linux
Latest Commit:		Version Fixed In:	8.1.0
Sentry Crash Report:

Description xplosionmind 2023-05-07 15:11:32 UTC

SUMMARY

All of a sudden, sometimes digiKam starts to behave as the attachment shows, and the only way to make it stop is closing and reopening it.


STEPS TO REPRODUCE
1. Open digiKam
2. Start clicking on buttons, randomly
3. Sometimes after clicking something the screen starts behaving like this

OBSERVED RESULT

Screen lagging and flickering, as shown in the attachment

EXPECTED RESULT

Normally viewing the app

SOFTWARE/OS VERSIONS
OS: Fedora 38 with GNOME 44.1 and wayland
KDE Plasma Version: n/a
KDE Frameworks Version 5.105.0
Qt Version 5.15.9 (built against 5.15.9)

Comment 1 xplosionmind 2023-05-07 15:25:25 UTC

[attachment](https://cloud.tommi.space/s/Dxg9r23dXtfAMzZ)

Comment 2 caulier.gilles 2023-05-07 16:29:39 UTC

This is probably due to wayland. There is no problem like this with X11 based distro.

Please also try the AppImage bundle that we provide instead the Flatpak, just to see if the problem remain.

https://docs.digikam.org/en/getting_started/installation.html#digikam-on-linux

Gilles Caulier

Comment 3 xplosionmind 2023-05-07 21:29:24 UTC

> This is probably due to wayland.
> Please also try the AppImage bundle

So you mean that there is nothing that could be done by using the Flatpak + Wayland?

Comment 4 caulier.gilles 2023-05-08 05:44:03 UTC

Certainly, but digiKam team do not maintains the FlatPak bundle. Report the problem as DOWNDTREAM bug to the FlatPak project.

Look this entry for ex :

https://github.com/flathub/org.kde.digikam/issues/36

Best

Gilles Caulier

Comment 5 xplosionmind 2023-05-08 07:19:50 UTC

Thanks a lot for sharing! I did not know this. I added a comment to the Flatpak bug.