Bug 430992

Summary:	Krunner returns empty item
Product:	[Plasma] krunner	Reporter:	elman <elman>
Component:	filesearch	Assignee:	baloo-bugs-null
Status:	REPORTED ---
Severity:	normal	CC:	alexander.lohnau, arnaud.vergnet, plasma-bugs-null
Priority:	NOR
Version First Reported In:	5.20.4
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	empty result

Description elman 2020-12-30 23:43:38 UTC

SUMMARY
https://bugs.kde.org/show_bug.cgi?id=409499 was closed, but reported issue is not fixed so as requested I created new issue with same problem.

SUMMARY
When I use krunner and search for certain string, empty / null item is among results. It is always reproducible on one of my computers, but others work fine. Sometimes this empty item is image, sometimes folder, sometimes video. However it is consistent with search strings. Eg. when I search for "spo", it is always image. When I search for "a", it is always archive, when I search for "b" it is always video.

If I disable plugin "Desktop Search", empty items do not appear in results.

When I click empty item, I get error Malformed URL.

I understand this is weird issue. Is there anything I could use to add more detailed information? Can I somehow call krunner query from console?

STEPS TO REPRODUCE
1. Open krunner (I have Win key to open krunner)
2. Search for string spo

OBSERVED RESULT
Empty item appears. See attachment in bug 409499.

EXPECTED RESULT
No empty item.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro
(available in About System)
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION

Comment 1 elman 2020-12-30 23:46:36 UTC

Created attachment 134409 [details]
empty result

manjaro color theme is not exactly great...

Comment 2 elman 2021-01-04 17:27:19 UTC

I can reproduce it on different computer. Most of the time I search for, there is always empty image result. Plasma 5.20.4, KF 5.77.0, Qt 5.12.2.

Comment 3 Arnaud 2021-10-24 18:09:12 UTC

I can reproduce the bug on only one computer with an old install (running KDE neon 5.23.1, KDE Frameworks 5.87.0, Qt 5.15.3, Kernel 5.11.0-38-generic), but not on my other one with a fresh one (running KDE manjaro 5.22.5, KDE Frameworks 5.87.0, Qt 5.15.2, Kernel 5.14.10-1-MANJARO).

Both have desktop search enabled in Krunner settings. As reported above, disabling this option removes the empty file from the results, and the file type changes with each search.

I noticed the empty file appears only when I type more than 2 characters, and disappears when I type around 6 to 10 characters (this number varies).

I would say this bug has been around for more than two years, if not more (been so long I got used to it).

But as explained in https://bugs.kde.org/show_bug.cgi?id=430891, running `balooctl purge` and then rebooting fixed the issue. Would be nice to fix it with an update tho, as not everyone will know to do this.