https://bugs.kde.org/show_bug.cgi?id=439361
Bug ID: 439361
Summary: Plasma Notification slows down apps refresh rate
Product: plasmashell
Version: 5.22.1
Platform: openSUSE RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Notifications
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
On my systems the refresh rate drops significantly while a plasma notification
is shown on the screen so that the system feels super slow then. I don't know
the boundary condition, but I can describe some way where at least I can
somehow observe and reproduce it.
STEPS TO REPRODUCE
1. I have a Spotify instance open (flatpak)
2. I have a Firefox instance open
3. Open a Website in Firefox and scroll threw it (works fine)
4. Change the title, so that a notification is shown
5. Scroll the website while the notification is present: It is stuttering until
the notification has purged
(I was also able to make that happen with a notification caused by a "ping"
from the mobile in kde connect instead of Spotify and observed the stuttered
scrolling also e. g. in Dolphin. Also videos are stuttering while a
notification is present on screen.)
OBSERVED RESULT
System is stuttering
EXPECTED RESULT
System should stay smooth
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: openSUSE Tumbleweed 20210626
(available in About System)
KDE Plasma Version: 5.22.1
KDE Frameworks Version: 5.83.0
Qt Version: 5.12.2
Kernel 5.12.12-1
X11
GeForce GTX 1070
If this could be a reproduction criteria: widescreen Display with high
resolution (5120x1440)
Addition: Sometimes I have the feeling that a similar slow down is observed
when starting new apps. But there I have difficulties to reproduce up to
now...)
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