Bug 507509

Summary: Excessive 'IFFChunk::innerFromDevice: unkwnown chunk' logging produced by multiple applications.
Product: [Frameworks and Libraries] frameworks-kimageformats Reporter: Chiitoo <chiitoo>
Component: generalAssignee: Alex Merry <alex.merry>
Status: RESOLVED FIXED    
Severity: normal CC: aacid, cdennett, kdelibs-bugs-null, smowtenshi, tsujan2000
Priority: NOR    
Version First Reported In: 6.16.0   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Chiitoo 2025-07-26 13:15:22 UTC 
SUMMARY

After 0a9f9fe1063 [1], several applications will "spam" the following (and possibly similar) line(s):

IFFChunk::innerFromDevice: unkwnown chunk "\x89PNG"

1. https://invent.kde.org/frameworks/kimageformats/-/commit/0a9f9fe106368f8c21645de82c7843947d7bab77

STEPS TO REPRODUCE

1. Run something like Falkon (a clean profile might not trigger the issue, since specific (png?) files are needed, but with some history or speed-dial data it's probably quite likely to see; I did not dig in deeper yet).
2. Type something on the search bar to pick up specific type of icons, or set a background/something else on the speed-dial.

OBSERVED RESULT

Lost and lots of terminal logging output.

EXPECTED RESULT

Not so lots and lots of terminal logging output.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Gentoo Linux (Not a full Plasma install, but using KWin with LXQt.)
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.10 (838d543cd2adddce6419faa91647192653d71088)

ADDITIONAL INFORMATION

Wayland behaviour not tested at all.

See also:

https://github.com/lxqt/lxqt/discussions/2750
Comment 1 Tsu Jan 2025-07-26 16:19:11 UTC 
> Wayland behaviour not tested at all.

Wayland, X11, KDE or LXQt makes no difference in this case. Those warnings clutter the log on launching various kinds of Qt-based apps
Comment 2 Charles Dennett 2025-07-27 15:02:53 UTC 
I'm getting the same spam of my log files whenever I turn on either of my two monitors.

Operating System: Fedora Linux 42
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
Kernel Version: 6.15.7-200.fc42.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 × 13th Gen Intel® Core™ i5-13400
Memory: 16 GiB of RAM (15.4 GiB usable)
Graphics Processor: Intel® Graphics
Comment 3 Albert Astals Cid 2025-07-28 14:53:53 UTC 
Will be fixed in the next release.