https://bugs.kde.org/show_bug.cgi?id=439512
Bug ID: 439512
Summary: "Show tooltips" will make plasmashell very
unresponsive if the thumbnail is read very slowly
(e.g. a slow net disk mounted by rclone)
Product: plasmashell
Version: 5.22.2
Platform: openSUSE RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Task Manager and Icons-Only Task Manager
Assignee: h...@kde.org
Reporter: qydwhotm...@gmail.com
CC: plasma-b...@kde.org
Target Milestone: 1.0
SUMMARY
If "Show tooltips" option is checked, when hovering over some programs (like
Audacious), plasmashell will freeze for several seconds and then show the
thumbnail image, because the thumbnail is read very slowly (located in a
network disk mounted by rclone or similar programs).
STEPS TO REPRODUCE
1. Check "Show tooltips" in task manager settings.
2. Move your mouse over any program which uses thumbnail from a slow web drive
(e.g. Audacious playing music file from a web drive mounted by rclone)
OBSERVED RESULT
plasmashell freezes for several seconds and then show the thumbnail image. If
network is bad, plasmashell is likeyly to hang forever.
EXPECTED RESULT
Showing the thumbnail should not block other actions.
SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20210702
KDE Plasma Version: 5.22.2
KDE Frameworks Version: 5.83.0
Qt Version: 5.15.2
Kernel Version: 5.12.13-1-default (64-bit)
Graphics Platform: X11
Processors: 8 × AMD Ryzen 7 4700U with Radeon Graphics
Memory: 15.0 GiB of RAM
Graphics Processor: AMD RENOIR
ADDITIONAL INFORMATION
If I enable debug log, I can see outputs like "qt.quick.image:
QUrl("file:///<image path located in slow web drive mounted by rclone>")" when
the freeze happens.
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