Bug 358156

Summary:	Clock doesn't update after switching back from tty
Product:	[Plasma] plasmashell	Reporter:	Federico Kereki <fkereki>
Component:	Digital Clock widget	Assignee:	Martin Klapetek <mklapetek>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	plasma-bugs
Priority:	NOR
Version:	master
Target Milestone:	1.0
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Display after switching back, with digits missing Display after changing font properties

Description Federico Kereki 2016-01-18 10:33:36 UTC

I opened a console with ALT+CTRL+F1.
I left it open.
After a (longish) while, I went back with ALT+CTRL+F7.
The clock date was missing some digits.
This also happens (sometimes) in the system tray.
Also, sometimes digits are missing in the time itself.

Reproducible: Sometimes

Steps to Reproduce:
1. Switch to tty with ALT+CTRL+F1
2. Wait (possibly a while)
3. Switch back with ALT+CTRL+F7


Actual Results:  
Clock time or clock date is missing some digits.


Expected Results:  
All digits (time, date) should have appeared.

If you change font attributes (for example, apply bold or italics, or remove those if already checked) display goes back to normal.
However, if you go back to the original font settings, digits will be missing again.

Comment 1 Federico Kereki 2016-01-18 10:35:28 UTC

Created attachment 96707 [details]
Display after switching back, with digits missing

This is a partial screenshot, after having gone back with ALT+CTRL+F7.
In this case, digits are missing in the date part.
(Other times, digits are missing in the time part.)
I had switched to tty the night before.
Next morning, I switched back.

Comment 2 Federico Kereki 2016-01-18 10:36:55 UTC

Created attachment 96708 [details]
Display after changing font properties

Display after changing some font properties (in this case, I opted for bold text)
All digits are back again.
Changing to italics also works.
If you go back to the original font settings, digits disappear as earlier.

Comment 3 Martin Klapetek 2016-01-18 17:45:09 UTC

Thanks for the report

So it is only missing digits, but it does not actually stop updating, correct?

Comment 4 Federico Kereki 2016-01-18 22:50:12 UTC

(In reply to Martin Klapetek from comment #3)
> Thanks for the report
> 
> So it is only missing digits, but it does not actually stop updating,
> correct?

Agreed - it seems like some digits are "cached", so only changed digits are shown. In the case I showed, the date changed from "2016-01-17" to "2016-01-18" -- and only the changed "8" was shown. I've seen similar effects with dates: some digits get updated and changed, and others are not visible until it's their turn to change.

Comment 5 Martin Klapetek 2016-01-27 02:49:38 UTC


*** This bug has been marked as a duplicate of bug 356290 ***