Created attachment 132521 [details] system load when viewing the file indexer tab SUMMARY The tab in Kinfo showing status of File Indexer takes 50%+ CPU load even when showing just "File Indexer is not running" with button "Start File Indexer". (that is 50%+ on *all* 16 cores of AMD Ryzen 7) STEPS TO REPRODUCE 1. disable file indexing service 2. launch kinfo - normal ~0% CPU usage, showing version of KDE 3. switch to File Indexer Monitor = half the CPU used for "nothing" OBSERVED RESULT ~35% CPU is used by process kinfocenter EXPECTED RESULT ~0-1% CPU usage would be expected, when it just reports that the file indexing is not running SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE neon 5.20 (available in About System) KDE Plasma Version: 5.20.0 KDE Frameworks Version: 5.75.0 Qt Version: 5.15.0 ADDITIONAL INFORMATION kernel: 5.9.1-050901-generic CPU: 16x AMD Ryzen 7 4800H
Hm, seems to be gone after going down to kernel 5.8.0-23 (after noticing some other strange things, like `dmesg` not working, reporting something about denied access). And also meanwhile I removed the "nomodeset" from grub config (leftover from booting the live image), which seems to help to init the GPU driver correctly during the boot sequence, which may be another change to original report. So I **guess** that kinfocenter tab may be sensitive either to being denied some system file (like dmesg), or to the SW mode of gfx. (or maybe it's something completely different, as it usually goes with programming and bug reports)
Can confirm. The CPU spike is not as dramatic on my machine, but it is still noticeable. How odd.
Seems to be a Neon specific problem, can´t reproduce with Tumbleweed, almost same package versions (Qt is 5.15.1).
I can reproduce on Tumbleweed (with all KDE stuff compiled from source).
File Indexer Monitor module was removed from Plasma 5.22 beta.
Yep, this page is long dead, its UI having been moved to the relevant page in System Settings. And I can't reproduce the issue there.