Kubuntu: No more file search results in Krunner or Kickoff after Hirsute Upgrade

[halmholz]

I just upgraded from Kubuntu 20.10 to 21.04 and now I no longer get any file search results ("Desktop search") in Krunner or Kickoff ("Application Launcher"). For example type "testfile" in Krunner gives zero results although there this file in the home directory.

However baloosearch in the terminal works fine. Desktop search / file search is also enabled in the settings for Krunner and in system settings.

If I create a new user account the file search does work. I assume that some setting in the home directory must have been changed during the upgrade.

Please let me know which logs or files I could upload that could be of use to debug this problem.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: xorg 1:7.7+22ubuntu1
ProcVersionSignature: Ubuntu 5.11.0-18.19-generic 5.11.17
Uname: Linux 5.11.0-18-generic x86_64
ApportVersion: 2.20.11-0ubuntu65.1
Architecture: amd64
BootLog: Error: [Errno 13] Keine Berechtigung: '/var/log/boot.log'
CasperMD5CheckResult: unknown
CompositorRunning: None
CurrentDesktop: KDE
Date: Wed Jun 9 20:10:40 2021
DistUpgraded: 2021-06-06 22:12:52,319 DEBUG Running PostInstallScript: '/usr/lib/ubuntu-advantage/upgrade_lts_contract.py'
DistroCodename: hirsute
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 6.1.18, 5.11.0-18-generic, x86_64: installed
 virtualbox, 6.1.18, 5.8.0-55-generic, x86_64: installed
ExtraDebuggingInterest: I just need to know a workaround
GraphicsCard:
 Intel Corporation HD Graphics 630 [8086:5912] (rev 04) (prog-if 00 [VGA controller])
   Subsystem: Fujitsu Technology Solutions HD Graphics 630 [1734:121c]
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 046d:c326 Logitech, Inc. Washable Keyboard K310
 Bus 001 Device 002: ID 046d:c404 Logitech, Inc. TrackMan Wheel
 Bus 001 Device 004: ID 8087:0a2b Intel Corp. Bluetooth wireless interface
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: FUJITSU ESPRIMO Q556/2
ProcEnviron:
 LANGUAGE=de
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-18-generic root=UUID=8f3a8bfd-584a-4e11-a2f8-984c6e293255 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to hirsute on 2021-06-06 (2 days ago)
dmi.bios.date: 02/12/2020
dmi.bios.release: 1.26
dmi.bios.vendor: FUJITSU // American Megatrends Inc.
dmi.bios.version: V5.0.0.12 R1.26.0 for D3403-U1x
dmi.board.name: D3403-U1
dmi.board.vendor: FUJITSU
dmi.board.version: S26361-D3403-U1
dmi.chassis.type: 3
dmi.chassis.vendor: FUJITSU
dmi.modalias: dmi:bvnFUJITSU//AmericanMegatrendsInc.:bvrV5.0.0.12R1.26.0forD3403-U1x:bd02/12/2020:br1.26:svnFUJITSU:pnESPRIMOQ556/2:pvr:rvnFUJITSU:rnD3403-U1:rvrS26361-D3403-U1:cvnFUJITSU:ct3:cvr:
dmi.product.family: ESPRIMO-FTS
dmi.product.name: ESPRIMO Q556/2
dmi.sys.vendor: FUJITSU
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.104-1build1
version.libgl1-mesa-dri: libgl1-mesa-dri 21.0.1-2
version.libgl1-mesa-glx: libgl1-mesa-glx 21.0.1-2
version.xserver-xorg-core: xserver-xorg-core 2:1.20.11-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200714-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-1

[Scarlett Gately Moore (scarlettmoore)]

This bug is very old, if it is still an issue please update the bug with info from a supported release.

[halmholz (halmholz)]

Apparently nobody else is having this problem, so it isn't a Ubunutu-bug I guess. But to this day I can't search from the "start menu". Running 23.10 in the meantime. I have no idea how to fix this without reinstalling the system.