https://bugs.kde.org/show_bug.cgi?id=463278
Bug ID: 463278
Summary: "Time from now" alarms are unexpectedly imprecise
Classification: Applications
Product: kalarm
Version: 3.3.6
Platform: Kubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: djar...@kde.org
Reporter: rwest...@bredband.net
Target Milestone: ---
STEPS TO REPRODUCE
1. Open the dialog box for a new display alarm.
2. For the alarm time, select "Time from now" with a period of 1 minute, but
don't click OK immediately.
3. Wait until the system time is 5 seconds before a whole minute, then click
OK.
OBSERVED RESULT
The display alarm is triggered after 5 seconds, rather than the requested 1
minute.
EXPECTED RESULT
I expected the display alarm to trigger after 1 minute, precise to the second
or so.
SOFTWARE/OS VERSIONS
Linux distribution: Kubuntu 22.04.1 LTS
KDE Plasma Version: 5.24.7
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3
ADDITIONAL COMMENTS
I assume the alarm trigger time is always converted to an absolute time, and
that the truncation to whole minutes takes place because absolute times are
only kept with minute precision. Fine for absolute trigger times, but not
really adequate for relative times which could reasonably be a small number of
minutes. For minimal changes, perhaps store the time with second precision and
use that for triggering, but round to nearest minute when shown/edited as an
absolute time in the UI?
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