https://bugs.kde.org/show_bug.cgi?id=486228
Bug ID: 486228
Summary: Extremely slow UI on Application Launcher hovering
immediately after opening as well as after swiping the
mouse cursor not too fast on the menu
Classification: Plasma
Product: plasmashell
Version: 6.0.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Application Launcher (Kickoff)
Assignee: plasma-b...@kde.org
Reporter: zackme...@outlook.com
CC: mikel5...@gmail.com, noaha...@gmail.com
Target Milestone: 1.0
SUMMARY
Upon opening Application Launcher (start menu) using either direct clicking on
it or using the super-key,
then proceeding to immediately hover on any place on the menu to select he
desired app, the UI of the menu hangs for a second or two once or a couple of
times as well as a bit of CPU usage spike. If the UI is back to responsive and
I swipe the mouse cursor over the menu items very quickly to see which
applications show on the right side of the menu for each menu item, the UI
freezes again after moderate swiping speed and CPU usages increases A LOT!.
It's like many loops were spawned for each menu item and all are processing at
the same time as the swiping happens.
Please note:
If I increase the swiping motion, the UI freezes for duration of 5 to more
seconds and CPU usages increases, then it respond again after the CPU usage is
decreased and if no further swiping motion was detect on the menu items.
STEPS TO REPRODUCE
1. Open start menu using the panel applet/widget/icon
2. Immediately start hovering over the menu and immediately experience UI
freeze
3. Wait for 2 seconds for UI to respond
4. Swipe the mouse cursor in a moderate speed over the menu items and
experience slow UI response and high CPU usage (about 6% on my CPU)
OBSERVED RESULT
Experience one or more UI freezes in the menu as well as a bit of CPU usage
spike.
EXPECTED RESULT
Experience no freezes/delays nor CPU usage spikes either after swiping cursor
motion or opening the application launcher.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.0.4
(available in About System)
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0
ADDITIONAL INFORMATION
OS: Arch Linux x86_64
Host: ASRock X570 Phantom Gaming 4
Kernel: 6.8.7-2-cachyos-eevdf-lto
Uptime: 1 hour, 28 mins
Packages: 1538 (pacman)
Shell: fish 3.7.1
Resolution: 1920x1080, 2560x1440
DE: Plasma 6.0.4 (Wayland)
WM: kwin_wayland_wr
Theme: Breeze-Dark [GTK2], Breeze [GTK3]
Icons: breeze-dark [GTK2/3]
Terminal: konsole
Terminal Font: Fira Code 10
CPU: AMD Ryzen 7 5800X3D (16) @ 3.400GHz
GPU: AMD ATI PULSE RX 7900 XTX
Memory: 10672MiB / 64226MiB
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