Clone to track the specific error message from https://api.kde.org/frameworks/plasma-framework/html/theme_8cpp_source.html#l00280 +++ This bug was initially created as a clone of Bug #442011 +++ SUMMARY *** NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** STEPS TO REPRODUCE 1. 2. 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION SUMMARY In some cases (exact reproducible steps not found yet), Plasma will fail to display any application icon on Fedora Kinoite. On Fedora Kinoite, all files in /usr are set with the UNIX timestamp of 0. Running plasmashell in a terminal will show that line repeatedly: kf.plasma.core: findInCache with a lastModified timestamp of 0 is deprecated Updating the timestamps on those files and running kbuildsyscoca5 temporarily fixes the issue. This is most likely due to a confusion in: https://api.kde.org/frameworks/plasma-framework/html/theme_8cpp_source.html#l00280 where lastModified is here truly 0 and not left to the default value. An option would be to use 1 instead when looking at a file with a 0 timestamp in the calling code but I have not found where this function is called yet. STEPS TO REPRODUCE 1. Clean icon cache 2. Set an application icon file, desktop entry, etc. timestamp to UNIX time 0 3. plasma-shell --replace OBSERVED RESULT Lots of: kf.plasma.core: findInCache with a lastModified timestamp of 0 is deprecated Application has no icon. EXPECTED RESULT Applications has an icon. SOFTWARE/OS VERSIONS Fedora Linux 35 & Rawhide Linux/KDE Plasma: 5.22.4 KDE Plasma Version: 5.22.4 KDE Frameworks Version: 5.85 Qt Version: 5.15.2 ADDITIONAL INFORMATION This is similar to https://bugs.kde.org/show_bug.cgi?id=429196 but I could not get this working with the same workaround.
This is https://invent.kde.org/ravier/plasma-framework/-/blob/master/src/plasma/theme.cpp#L279. Essentially we need to keep accepting 0 as a valid value. We can still make the lastModified argument non optional in KF6.
Copied from https://bugs.kde.org/show_bug.cgi?id=442011: My journal STILL is spammed by "kf.plasma.core: findInCache with a lastModified timestamp of 0 is deprecated" messages. If it's benign, it has no business being logged. But right now it's being written 50+ times per second, judging from journal logs, which is a bug in and of itself, and makes using the journal an unnecessary pain in the butt. ``` ~ % journalctl -b > out.txt ~ % uptime 17:12:54 up 4 days, 1:04, 2 users, load average: 4.16, 4.04, 4.00 ~ % grep 'kf.plasma.core: findInCache with' out.txt | wc -l 553628 ``` Right now it's being written 138,000 times PER DAY on my machine.
I have the message also over and over in the log. Operating System: Fedora Linux 40 KDE Plasma Version: 6.0.4 KDE Frameworks Version: 6.1.0 Qt Version: 6.7.0 Kernel Version: 6.8.7-300.fc40.x86_64 (64-bit)
There are now 2 (!) patches for this issue: https://invent.kde.org/frameworks/ksvg/-/merge_requests/46 by Timothée https://invent.kde.org/frameworks/ksvg/-/merge_requests/47 by myself They were submitted within a few hours of each other, I didn't see theirs before submitting mine. They do take different approaches to solving this bug.