How can I reduce the delay of the appearance of the thumbnails over grouped windows in the taskbar upon mouse hover?

How can I reduce the delay of the appearance of the thumbnails over grouped windows in the taskbar upon mouse hover? Thanks in advance.

System:
  Kernel: 5.10.59-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.10-x86_64 
  root=UUID=4bb82163-e9d9-4438-a428-ae1683dedddf rw quiet apparmor=1 
  security=apparmor resume=UUID=310f0340-c29f-4e7a-bef7-0f2dbbcf4994 
  udev.log_priority=3 
  Desktop: KDE Plasma 5.22.4 tk: Qt 5.15.2 wm: kwin_x11 vt: 1 dm: SDDM 
  Distro: Manjaro Linux base: Arch Linux 
Machine:
  Type: Desktop Mobo: Micro-Star model: Z590-A PRO (MS-7D09) v: 1.0 
  serial: <filter> UEFI: American Megatrends LLC. v: 1.00 date: 01/14/2021 
Battery:
  Message: No system battery data found. Is one present? 
Memory:
  RAM: total: 31.19 GiB used: 9.25 GiB (29.7%) 
  RAM Report: permissions: Unable to run dmidecode. Root privileges required. 
CPU:
  Info: 6-Core model: 11th Gen Intel Core i5-11600K bits: 64 type: MT MCP 
  arch: Rocket Lake family: 6 model-id: A7 (167) stepping: 1 microcode: 40 
  cache: L2: 12 MiB bogomips: 93924 
  Speed: 800 MHz min/max: 800/4900 MHz Core speeds (MHz): 1: 800 2: 801 3: 801 
  4: 800 5: 800 6: 801 7: 801 8: 801 9: 801 10: 800 11: 800 12: 800 
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat arch_capabilities 
  arch_perfmon art avx avx2 avx512_bitalg avx512_vbmi2 avx512_vnni 
  avx512_vpopcntdq avx512bw avx512cd avx512dq avx512f avx512ifma avx512vbmi 
  avx512vl bmi1 bmi2 bts clflush clflushopt cmov constant_tsc cpuid 
  cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts ept ept_ad erms est f16c 
  flexpriority flush_l1d fma fpu fsgsbase fsrm fxsr gfni ht hwp hwp_act_window 
  hwp_epp hwp_notify hwp_pkg_req ibpb ibrs ibrs_enhanced ida intel_pt invpcid 
  invpcid_single lahf_lm lm mca mce md_clear mmx monitor movbe mpx msr mtrr 
  nonstop_tsc nopl nx ospke pae pat pbe pcid pclmulqdq pdcm pdpe1gb pebs pge 
  pku pln pni popcnt pse pse36 pts rdpid rdrand rdseed rdtscp rep_good sdbg 
  sep sha_ni smap smep smx ss ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall 
  tm tm2 tpr_shadow tsc tsc_adjust tsc_deadline_timer tsc_known_freq umip vaes 
  vme vmx vnmi vpclmulqdq vpid x2apic xgetbv1 xsave xsavec xsaveopt xsaves 
  xtopology xtpr 
  Vulnerabilities: Type: itlb_multihit status: Not affected 
  Type: l1tf status: Not affected 
  Type: mds status: Not affected 
  Type: meltdown status: Not affected 
  Type: spec_store_bypass 
  mitigation: Speculative Store Bypass disabled via prctl and seccomp 
  Type: spectre_v1 
  mitigation: usercopy/swapgs barriers and __user pointer sanitization 
  Type: spectre_v2 mitigation: Enhanced IBRS, IBPB: conditional, RSB filling 
  Type: srbds status: Not affected 
  Type: tsx_async_abort status: Not affected 
Graphics:
  Device-1: Intel RocketLake-S GT1 [UHD Graphics 750] vendor: Micro-Star MSI 
  driver: i915 v: kernel bus-ID: 00:02.0 chip-ID: 8086:4c8a class-ID: 0300 
  Display: x11 server: X.Org 1.20.13 compositor: kwin_x11 driver: 
  loaded: intel unloaded: modesetting alternate: fbdev,vesa display-ID: :0 
  screens: 1 
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2") 
  s-diag: 582mm (22.9") 
  Monitor-1: HDMI1 res: 1920x1080 dpi: 96 size: 510x290mm (20.1x11.4") 
  diag: 587mm (23.1") 
  OpenGL: renderer: Mesa Intel Graphics (RKL GT1) v: 4.6 Mesa 21.1.6 
  direct render: Yes 
Audio:
  Device-1: Intel Tiger Lake-H HD Audio vendor: Micro-Star MSI 
  driver: snd_hda_intel v: kernel alternate: snd_sof_pci bus-ID: 00:1f.3 
  chip-ID: 8086:43c8 class-ID: 0403 
  Sound Server-1: ALSA v: k5.10.59-1-MANJARO running: yes 
  Sound Server-2: JACK v: 1.9.19 running: no 
  Sound Server-3: PulseAudio v: 15.0 running: yes 
  Sound Server-4: PipeWire v: 0.3.33 running: yes 
Network:
  Device-1: Intel Ethernet I225-V vendor: Micro-Star MSI driver: igc v: kernel 
  port: efa0 bus-ID: 03:00.0 chip-ID: 8086:15f3 class-ID: 0200 
  IF: enp3s0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
  IP v4: <filter> type: dynamic noprefixroute scope: global 
  broadcast: <filter> 
  IP v6: <filter> type: noprefixroute scope: link 
  WAN IP: <filter> 
Bluetooth:
  Message: No bluetooth data found. 
Logical:
  Message: No logical block device data found. 
RAID:
  Message: No RAID data found. 
Drives:
  Local Storage: total: 931.51 GiB used: 95.18 GiB (10.2%) 
  SMART Message: Unable to run smartctl. Root privileges required. 
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung model: SSD 980 PRO 1TB 
  size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 63.2 Gb/s 
  lanes: 4 type: SSD serial: <filter> rev: 2B2QGXA7 temp: 34.9 C scheme: GPT 
  Message: No optical or floppy data found. 
Partition:
  ID-1: / raw-size: 60 GiB size: 58.76 GiB (97.93%) used: 14.53 GiB (24.7%) 
  fs: ext4 dev: /dev/nvme0n1p1 maj-min: 259:1 label: N/A 
  uuid: 4bb82163-e9d9-4438-a428-ae1683dedddf 
  ID-2: /boot/efi raw-size: 512 MiB size: 511 MiB (99.80%) 
  used: 288 KiB (0.1%) fs: vfat dev: /dev/nvme0n1p4 maj-min: 259:4 
  label: NO_LABEL uuid: F6B6-147A 
  ID-3: /home raw-size: 838.01 GiB size: 823.78 GiB (98.30%) 
  used: 80.66 GiB (9.8%) fs: ext4 dev: /dev/nvme0n1p3 maj-min: 259:3 
  label: N/A uuid: 1eb4b03f-089f-45f9-82a4-c43398b99a7b 
Swap:
  Kernel: swappiness: 10 (default 60) cache-pressure: 100 (default) 
  ID-1: swap-1 type: partition size: 33 GiB used: 8 KiB (0.0%) priority: -2 
  dev: /dev/nvme0n1p2 maj-min: 259:2 label: N/A 
  uuid: 310f0340-c29f-4e7a-bef7-0f2dbbcf4994 
Unmounted:
  Message: No unmounted partitions found. 
USB:
  Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 16 rev: 2.0 
  speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
  Device-1: 1-2:14 info: Micro Star MYSTIC LIGHT type: HID 
  driver: hid-generic,usbhid interfaces: 1 rev: 1.1 speed: 12 Mb/s 
  power: 500mA chip-ID: 1462:7d09 class-ID: 0300 serial: <filter> 
  Hub-2: 1-4:3 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s 
  power: 100mA chip-ID: 05e3:0608 class-ID: 0900 
  Hub-3: 1-4.3:5 info: Dell USB 2.0 Hub [MTT] ports: 4 rev: 2.0 
  speed: 480 Mb/s power: 100mA chip-ID: 413c:1010 class-ID: 0900 
  Device-1: 1-4.3.4:7 info: Dell Dell Wired Multimedia Keyboard 
  type: Keyboard,Mouse driver: hid-generic,usbhid interfaces: 2 rev: 1.1 
  speed: 1.5 Mb/s power: 98mA chip-ID: 413c:2110 class-ID: 0301 
  Device-2: 1-4.4:6 info: SINOWEALTH Game Mouse type: Mouse,Keyboard 
  driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 12 Mb/s 
  power: 256mA chip-ID: 258a:1007 class-ID: 0301 
  Hub-4: 1-13:4 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s 
  power: 100mA chip-ID: 05e3:0608 class-ID: 0900 
  Hub-5: 2-0:1 info: Full speed (or root) Hub ports: 9 rev: 3.1 speed: 10 Gb/s 
  chip-ID: 1d6b:0003 class-ID: 0900 
Sensors:
  System Temperatures: cpu: 27.8 C mobo: N/A 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 298 Uptime: 1d 2h 58m wakeups: 5 Init: systemd v: 248 
  tool: systemctl Compilers: gcc: 11.1.0 Packages: pacman: 1321 lib: 361 
  flatpak: 0 Shell: Bash v: 5.1.8 running-in: konsole inxi: 3.3.06 

1 Like

:+1: Welcome to Manjaro! :+1:

  1. Please read this:
    How to provide good information
    and press the three dots … below your post and press the :pencil2: to give us more information so we can see what’s really going on.
    Now we know the symptom of the disease, but we need some more probing to know where the origin lies… :grin:
  2. An inxi --admin --verbosity=7 --filter --no-host --width would be the minimum required information for us to be able to help you. (Personally Identifiable Information like serial numbers and MAC addresses will be filtered out by the above command)
    Also, please copy-paste that output in-between 3 backticks ``` at the beginning and end of the code/text.

:+1:

Sorry I didn’t provide the necessary information.

Well, now we know you’ve got KDE Plasma: You can’t do that as it’s hardcoded.

The only things you can do is:

  • install another task manager that has this option
  • get your hands dirty and develop the UI yourself, as it used to be faster, but users complained that it was too fast, and they wanted a delay, so the change was rolled back.

:sob:

Apparently this was resolved in the meantime. See solution

1 Like

I apologize for continuing the thread beyond the point of solution, but I’m very curious.

You say “install other task manager”. Do you mean desktop environment? Or is it possible to install something else within KDE Plasma to solve this?

Which DEs have this option?

Also, is there a theoretical possibility for this to become customizable in KDE Plasma later?

EDIT I find it interesting that thumbnails are treated as tooltips. When I disable the tooltips, I don’t get the window thumbnail popups.

Latte dock

Most of them

In theory, practice and theory are equal; in practice, they’re not!!

:joy:

I apologize for not having done my research properly, but I found a solution. It affects not only the thumbnail previews but also all other tooltips.

This command sets the popup delay to 1 milisecond.

kwriteconfig5 --file ~/.config/plasmarc --group PlasmaToolTips --key Delay 1```
2 Likes

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