https://bugs.kde.org/show_bug.cgi?id=436796
Bug ID: 436796
Summary: Seconds skip or update irregularly at minute change
Product: plasmashell
Version: 5.21.4
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Digital Clock
Assignee: plasma-b...@kde.org
Reporter: yule2...@live.com
Target Milestone: 1.0
SUMMARY
Clock plasmoids (including Digital Clock and its forks) would skip or briefly
display the first second of each minute (e.g. 12:34:00). In rare cases, clock
plasmoids would randomly skip/briefly display other seconds as well.
STEPS TO REPRODUCE
1. Add any clock plasmoid that supports displaying seconds to the desktop or
any panel, if there isn't one
2. Configure the plasmoid to show seconds (in the case of Digital Clock, right
click the plasmoid, click "Configure Digital Clock", check "Show seconds" under
the Appearance tab, and apply changes)
3. Observe that the clock updates irregularly when the minute increments (e.g.
12:00:59 -> 12:01:00)
OBSERVED RESULT
Within the last few seconds of any minute, the clock would slow down (i.e. one
of the seconds would not update for more than 1 second). When the minute
changes, the next second (e.g. 12:01:00) is shown for about half a second or
not at all.
EXPECTED RESULT
The clock would consistently display each second in uniformly spaced intervals.
SOFTWARE/OS VERSIONS
Linux: Kernel 5.11 on Manjaro (I also have kernel versions 5.10 LTS and 5.4 LTS
as fallbacks)
KDE Plasma Version: 5.21.4
KDE Frameworks Version: 5.81.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
This behavior can be inconsistent, at least in recent Plasma releases, as clock
plasmoids would sometimes display the first second of each minute properly. I
can also work around this by restarting plasmashell over and over until the
irregular updates stop, but after a while, the irregular updates return in the
same plasmashell instance.
This behavior affects ALL clock plasmoids (built-in Analog Clock, Zren's Event
Calendar, etc.) but is most noticable with a digital clock. This behavior also
occurs when the plasmoid is loaded into Latte Dock, which I no longer use as of
submitting this ticket.
I believe this is likely related to Bug #392476 since that ticket also deals
with clock updates.
My Linux kernel version and distro are likely irrelevant, but they may still be
helpful. This bug has persisted since I started using Plasma daily on the same
machine with version 5.16. Additionally, I first spotted this behavior when I
first tried Plasma on a Linux machine running Fedora 24 back in 2016!
I am frustrated that this annoyance has not been fixed in the past 5 years or
so, and that I've never seen this oddity happen in other desktop environments
(including Windows and macOS).
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