Bug 21257

Summary: Qt applications strange behavior
Product: xorg Reporter: Luiz Angelo Daros de Luca <luizluca>
Component: Driver/nouveauAssignee: Nouveau Project <nouveau>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: 7.4 (2008.09)   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
xorg log
none
Yast on startup (normal)
none
Yast after some hours none

Description Luiz Angelo Daros de Luca 2009-04-17 11:22:05 UTC 
Hello,

I'm having a problem with Qt applications and nouveau. I filled a bug in kde (4.2.2) for some drawing problems. However, as it occurs also with virtualbox, I think this might be related to nouveau with Qt.

I use updated nouveau git + drm git without 3d. Alfter some time, plasma and virtualbox, independently, stops to draw some parts randomly. For example, when I pass the mouse over icons, they disapear and reapear (maybe reapers using cache image).

If I kill plasma or vbox and open it again, it works for some time before the same problem reocurs. This happens also with other kde aplications like kterminal.

I also tested with nv without being able to reproduce the problem.

For plasma I got a lot of this error:

QPainter::begin: Paint device returned engine == 0, type: 3                     
QPainter::setCompositionMode: Painter not active    
QPainter::end: Painter not active, aborted                                      

I also reported this in:
https://bugs.kde.org/show_bug.cgi?id=189059

PS: I'm not attaching the kernel log as it has only the normal startup info.
Do I need to attach "drm+debug" ?
Comment 1 Younes Manton 2009-04-17 17:20:59 UTC 
Can you attach your Xorg.0.log?
Comment 2 Luiz Angelo Daros de Luca 2009-04-20 11:03:01 UTC 
Created attachment 24977 [details]
xorg log

(Sorry, I forget to press "Attach" on bug openning)
Comment 3 Luiz Angelo Daros de Luca 2009-04-25 14:14:52 UTC 
From my KDE bug report about this problem:
 
"According to the Plasma developers both Plasma and Konsole have something in
 common: ARGV visuals. So this is probably a graphics driver issue."

Sorry for my ignorance but I just know ARGV from "int main(argc,argv)" ;)

You guys might know what is it. I hope that this is useful.
Comment 4 Younes Manton 2009-04-25 17:05:46 UTC 
Probably means ARGB visuals.

You said it started happening a few weeks ago, what did you update to cause it? Are you compiling the driver yourself and can you bisect it? I can't run Plasma or Konsole at the moment so I can't really look at it.
Comment 5 Luiz Angelo Daros de Luca 2009-04-26 17:41:21 UTC 
For some time, I was compiling but installing 64 bits libs in /usr/lib/ (nouveau default dir even on x86_64) and not /usr/lib64/. Sometime in the past, I fixed this forcing this in configure script. This brought another bug (already fixed) and so, I can't say which came first: my compilation fix or this bug in git.

If this bug could be rapidly reproduced, I could try something like "git bisect"

Is there any other way I can help?
Comment 6 Luiz Angelo Daros de Luca 2009-04-29 10:59:31 UTC 
Some more news:

I cannot reproduce this on a single screen setup. I removed my second monitor and the problem seems to vanish. When I readded it, it came back.

I have an unsual setup with a 21' lcd and a 15' lcd rotated to right and left of the first screen. The main reason to use nouveau is the randr1.2 support.
Comment 7 Younes Manton 2009-04-29 13:07:56 UTC 
Can you try without rotation?
Comment 8 Luiz Angelo Daros de Luca 2009-05-14 15:06:45 UTC 
It happens also without rotation and with simple apps like Yast
Comment 9 Luiz Angelo Daros de Luca 2009-05-14 15:07:27 UTC 
Created attachment 25873 [details]
Yast on startup (normal)
Comment 10 Luiz Angelo Daros de Luca 2009-05-14 15:08:18 UTC 
Created attachment 25874 [details]
Yast after some hours

Here, the icons are gone.
Comment 11 Martin Peres 2013-08-13 03:07:12 UTC 
Nouveau has no problems with KDE on any of my cards. Let's close this bug.

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