https://bugs.kde.org/show_bug.cgi?id=435968
Bug ID: 435968
Summary: Kernel 5.11.14-200.fc33.x86_64 Causes KDE Digital
Clock Display to Miss (Lag) 1 Second Every 2 to 3
Seconds
Product: frameworks-kwidgetsaddons
Version: 5.20.0
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: general
Assignee: cf...@kde.org
Reporter: richard.shadb...@btinternet.com
CC: kdelibs-b...@kde.org
Target Milestone: ---
SUMMARY
The digital clock in the system tray has a lag every 2 to 3 seconds, which
causes 1 second display to be skipped. That is the display is 16:28:50, then
16:28:51, then a lag, then 16:28:53, so the time 16:28:52 has been missed, or
not displayed.
Plasmashell --version is : 5.20.5
Using Fedora 33 and this occurs with kernel 5.11.14, but does NOT occur with
kernel 5.11.13 and 5.11.12.
STEPS TO REPRODUCE
1. Boot system with kernel 5.11.14 and once booted, examine the digital clock
2. Digital clock exhibits a lag and misses displaying the correct second count
every 2 to 3 seconds
3. Reboot with kernel 5.11.12, or 5.11.13, and issue not encountered.
OBSERVED RESULT
Lag issue experienced where times skip one of the seconds, caused by a
lag/stall.
EXPECTED RESULT
Digital clock should be updated every second
SOFTWARE/OS VERSIONS
Windows: N/A
macOS: N/A
Linux/KDE Plasma: Fedora 33, 5.20.5
(available in About System)
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.79.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
Raised redhat bug report :
https://bugzilla.redhat.com/show_bug.cgi?id=1950975
This has occurred in previous Fedora version and kernel :
https://bugzilla.redhat.com/show_bug.cgi?id=1838790
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