Random freezes when doing search in KDE Application Launcher

Support KDE Plasma
1

It doesn’t happen every time, but typing into the search box in the Application Launcher often freezes the system for a minute. The freeze seems to be limited to Plasma processes because I can still work in my virtual machine, and call up a terminal via keyboard shortcut.

I do have a second panel, but it does not have an Application Launcher.

inxi -F                            ✔ 
System:
  Host: shmuel-manjaro
    Kernel: 5.15.65-1-MANJARO arch: x86_64
    bits: 64 Desktop: KDE Plasma v: 5.25.5
    Distro: Manjaro Linux
Machine:
  Type: Desktop Mobo: ASUSTeK
    model: PRIME B365M-A v: Rev X.0x
    serial: <superuser required>
    UEFI: American Megatrends v: 1203
    date: 10/10/2019
CPU:
  Info: 8-core model: Intel Core i7-9700
    bits: 64 type: MCP cache: L2: 2 MiB
  Speed (MHz): avg: 4317 min/max: 800/4700
    cores: 1: 4074 2: 4064 3: 4475 4: 4293
    5: 4433 6: 4297 7: 4457 8: 4445
Graphics:
  Device-1: Intel CoffeeLake-S GT2 [UHD
    Graphics 630] driver: i915 v: kernel
  Device-2: Microdia USB Live camera
    type: USB driver: snd-usb-audio,uvcvideo
  Display: x11 server: X.Org v: 21.1.4
    with: Xwayland v: 22.1.3 driver: X:
    loaded: modesetting gpu: i915 resolution:
    1: 1920x1080~120Hz 2: 1600x900~60Hz
  OpenGL: renderer: Mesa Intel UHD Graphics
    630 (CFL GT2) v: 4.6 Mesa 22.1.7
Audio:
  Device-1: Intel 200 Series PCH HD Audio
    driver: snd_hda_intel
  Device-2: Microdia USB Live camera
    type: USB driver: snd-usb-audio,uvcvideo
  Sound Server-1: ALSA v: k5.15.65-1-MANJARO
    running: yes
  Sound Server-2: PulseAudio v: 16.1
    running: yes
  Sound Server-3: PipeWire v: 0.3.57
    running: yes
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI
    Express Gigabit Ethernet driver: r8169
  IF: enp3s0 state: up speed: 1000 Mbps
    duplex: full mac: a8:5e:45:e2:87:3c
  Device-2: Realtek 802.11ac NIC type: USB
    driver: rtl8821cu
  IF: wlp0s20f0u1u1 state: down
    mac: 2e:22:8b:21:c4:3d
Bluetooth:
  Device-1: Cambridge Silicon Radio Bluetooth
    Dongle (HCI mode) type: USB driver: btusb
  Report: rfkill ID: hci0 state: up
    address: see --recommends
Drives:
  Local Storage: total: 2.26 TiB used: 893.99
    GiB (38.7%)
  ID-1: /dev/sda vendor: Kingston
    model: SA400S37480G size: 447.13 GiB
  ID-2: /dev/sdb vendor: Toshiba
    model: HDWD120 size: 1.82 TiB
Partition:
  ID-1: / size: 63.25 GiB used: 41.28 GiB
    (65.3%) fs: ext4 dev: /dev/sda6
  ID-2: /boot/efi size: 96 MiB used: 37.8 MiB
    (39.3%) fs: vfat dev: /dev/sda1
Swap:
  Alert: No swap data was found.
Sensors:
  System Temperatures: cpu: 45.0 C mobo: N/A
  Fan Speeds (RPM): N/A
Info:
  Processes: 359 Uptime: 13h 10m
  Memory: 15.49 GiB used: 11.28 GiB (72.8%)
  Shell: Zsh inxi: 3.3.21
2

could be related to the latest plasma, since its buggy … or it could be because of baloo … go to system settings/search/file search and uncheck all the options there, click apply and see if it helped …
if not, create a new test user, login with it and see if you have freezes there too

3

I’d say your first test is to do ‘mv .config .configOLD’ and log out/log in - a fairly fresh desktop.

This has cured nearly all ills for me, then waste a half hour carefully putting things back until you think the problem came back.

The last file to cause me a problem - no idea why - was khotkeysrc… but there have been a few.

4

Have you tried Application Menu, and if so does it happen there too? It’s what I use and I don’t seem to have your issue.

5

Thanks to all for your suggestions, I will have to try them out. The suggestion from @Ben sounds like a softer version of the second suggestion from @brahma .