Bug 184149

Summary:	yellow artifacts appeared on the screen fonts
Product:	[Unmaintained] kdelibs	Reporter:	Dmitry <korvin>
Component:	general	Assignee:	Unassigned bugs mailing-list <unassigned-bugs>
Status:	RESOLVED FIXED
Severity:	normal	CC:	andresbajotierra
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Gentoo Packages
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	screenshot illustrating the bug

Description Dmitry 2009-02-12 15:20:35 UTC

Version:            (using KDE 4.2.0)
OS:                Linux
Installed from:    Gentoo Packages

Sometimes fonts became garbaged with some kind of yellow fills which may appear on one window or even a whole desktop. This may be related to font smoothing mechanism, but this is IMHO.

This effect does not take place for a long time, usually it disappears after some desktop/app redraws.

See the attached screenshot. 

P.S: This bug is not related to bug #175834

Comment 1 Dmitry 2009-02-12 15:22:24 UTC

Created attachment 31250 [details]
screenshot illustrating the bug

Comment 2 Dario Andres 2009-02-12 22:30:25 UTC

What is your graphics card/drivers? Does this also happen in non-KDE4/Qt4 applications ?
Thanks

Comment 3 Dmitry 2009-02-13 10:01:03 UTC

(In reply to comment #2)
> What is your graphics card/drivers? 
I have an asus X50N notebook with nVidia GeForce7000M onboard. Nvidia drivers 180.27

> Does this also happen in non-KDE4/Qt4 applications ?

No. This happens only on KDE 4.2. I haven't noticed such things in earlier versions, either 4.x or 3.5.x

P.S: I upgraded drivers to 180.29 yesterday. I'll drop a line here if something changes.

P.P.S: I think drivers is not the case. Problem take place on font rendering only, not the screen bitmap itself.

Comment 4 Dmitry 2009-02-13 18:20:28 UTC

> P.S: I upgraded drivers to 180.29 yesterday. I'll drop a line here if something
> changes.

Well, nothing had changed. I'm just experienced similar effect on a new driver.

Comment 5 Dmitry 2009-02-26 10:19:01 UTC

(In reply to comment #4)
> > P.S: I upgraded drivers to 180.29 yesterday. I'll drop a line here if something
> > changes.
> 
> Well, nothing had changed. I'm just experienced similar effect on a new driver.

P.P.S: After upgrading, symptoms of bug #175834 are existing for me too.

Comment 6 Dario Andres 2009-03-06 15:19:50 UTC

What Qt version are you using now ?

Comment 7 Dmitry 2009-03-06 15:39:53 UTC

(In reply to comment #6)
> What Qt version are you using now ?

Now I'm using 4.4.2

Comment 8 Dario Andres 2009-05-11 02:07:53 UTC

Was your Qt version updated? Do you have any news on this bug?
Thanks

Comment 9 Dmitry 2009-05-20 21:26:38 UTC

Sorry for not answering.. was too busy.

Now I'm using Qt 4.5.1 (from Gentoo portage) and it seemed that all is working ok. I haven't noticed any font artifacts since the upgrade.