https://bugs.kde.org/show_bug.cgi?id=478361
Bug ID: 478361
Summary: Window previews spam log and introduce lag in task
manager
Classification: Plasma
Product: plasmashell
Version: 5.27.10
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: Task Manager and Icons-Only Task Manager
Assignee: plasma-b...@kde.org
Reporter: markus.wallerber...@gmx.at
CC: qydwhotm...@gmail.com
Target Milestone: 1.0
SUMMARY
On Wayland and pipewire, using the standard Task Manager and having "show small
window previews when hovering over tasks" enabled, the mouse starts lagging as
soon as I hover over a task. At the same time, the pipewire starts spamming the
syslog with the following warning messages:
Dec 10 19:40:42 hopper pipewire[1590]: mod.client-node: 0x56018f5de1a0: unknown
peer 0x56018f6628b0 fd:126
Dec 10 19:40:43 hopper pipewire[1590]: mod.client-node: 0x56018f6803d0: unknown
peer 0x56018f685a50 fd:69
Dec 10 19:40:45 hopper pipewire[1590]: mod.client-node: 0x56018f6528a0: unknown
peer 0x56018f64fac0 fd:67
...
As a workaround, disabling this setting removes both the lag and the messages.
STEPS TO REPRODUCE
1. Start a Wayland shell. Make sure you have pipewire active.
2. (if not already present) Add a task manager to some panel on Plasma.
3. In the task manager's settings, make sure "show small window previews when
hovering over tasks" is enabled
4. Hover over some tasks
OBSERVED RESULT
1. Task manager lags slightly (mouse movement...)
2. Warning messages appear in syslog
EXPECTED RESULT
None of the above happening.
SOFTWARE/OS VERSIONS
Linux: 6.6.5
KDE Plasma Version: 5.27.10
KDE Frameworks Version: 5.112.0
Qt Version: 5.15.11
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