Bug 356783

Summary:	Text in Plasma tooltips sometimes becomes a series of smudgy blocks
Product:	[Plasma] plasmashell	Reporter:	Janek Bevendorff <kde>
Component:	Panel	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	dah5aeZe, darkwingbuck13, herowl.somebody9, nate, patrick.rudolph
Priority:	NOR
Version:	5.4.3
Target Milestone:	1.0
Platform:	Other
OS:	Linux
URL:	https://bugreports.qt.io/browse/QTBUG-36976
Latest Commit:		Version Fixed In:
Attachments:	Smudgy text blocks Screenshot (showing both monitors) with the blocky text

Description Janek Bevendorff 2015-12-16 15:57:48 UTC

This bug randomly happens. When I change to font from Oxygen Sans to something else, it goes away, but comes back when I change the font back to Oxygen Sans. Not sure if it really has something to do with the font, though.

I attached an image that shows how it looks.

Reproducible: Always

Comment 1 Janek Bevendorff 2015-12-16 15:58:13 UTC

Created attachment 96131 [details]
Smudgy text blocks

Comment 2 Christian Stadelmann 2016-01-24 11:20:44 UTC

Previous bug #355677 was closed as RESOLVED WORKSFORME.
I had the same issue sporadically appear for months with gnome-shell on X11. There are several bug reports in Fedora's bugzilla for it:
https://bugzilla.redhat.com/show_bug.cgi?id=742776 , especially attachment https://bugzilla.redhat.com/show_bug.cgi?id=742776#attach_550877 .
This issue has gone for me, but I don't know why. Maybe an update in some font rendering library. You could try changing your hinting settings, that sometimes helped.

Comment 3 Christian Stadelmann 2016-01-24 11:22:42 UTC

Also have a look at bug #356680, with upstream bugs https://bugreports.qt.io/browse/QTBUG-42386 and https://bugreports.qt.io/browse/QTBUG-36976

Comment 4 Buck Shockley 2016-03-16 13:16:46 UTC

This also happens to me, but usually in the Menu as opposed to anywhere else. This is on the latest Nvidia drivers.

Comment 5 Buck Shockley 2016-03-16 13:17:27 UTC

Created attachment 97925 [details]
Screenshot (showing both monitors) with the blocky text

Comment 6 Patrick Rudolph 2017-02-21 14:10:36 UTC

Still present in Plasma 5.8.4.
The kickoff plasmoid shows the same rendering errors as in attachment 97925 [details], while the kicker plasmoid is fine.

Comment 7 Nate Graham 2019-11-04 20:54:35 UTC

https://bugreports.qt.io/browse/QTBUG-36976

Comment 8 galder 2022-02-06 17:18:22 UTC

*** Bug 441477 has been marked as a duplicate of this bug. ***