[Intrepid KDE4] with r300 kwin shows artefact making compositing hardly usable

[Olivier]

Binary package hint: kwin

I am using an up to date Intrepid with KDE4 and am experiencing the linked-bug more thoroughly described on the KDE bug tracking system.

The ball has been bouncing between kwin, mesa and radeon on which was the culprit. Unfortunately, the issue has not been resolved and jeopardizes the KDE4-compositing experience for ATI card users.uru

If one of you graphic gurus would have a look at it, that would be great.

Please feel free to ask for any information that may track down the issue, I'll do my best to provide it.

[Michel-tungstengraphics (michel-tungstengraphics)]

Probably driver specific.

Again, it would be good to get some input from KDE developers as to what kwin does differently from compiz. It could be quite tedious to track this down for somebody unfamiliar with the kwin code.

[Tehfoo (tehfoo)]

I see the same thing here. I also noticed something about those artifacts while using Xv -- the lines of windows on top are composed of elements of the video while the rest of the video's window is black. I'm having trouble generating a screenshot of this right now, but as soon as I catch it I'll get it up. (running kwin alone -- when running kde I should have no problem)

[Olivier (olivier-lacroix)]

Binary package hint: kwin

I am using an up to date Intrepid with KDE4 and am experiencing the linked-bug more thoroughly described on the KDE bug tracking system.

The ball has been bouncing between kwin, mesa and radeon on which was the culprit. Unfortunately, the issue has not been resolved and jeopardizes the KDE4-compositing experience for ATI card users.uru

If one of you graphic gurus would have a look at it, that would be great.

Please feel free to ask for any information that may track down the issue, I'll do my best to provide it.

[Michel-tungstengraphics (michel-tungstengraphics)]

Fixed on the master and 7.0 branches.

commit 57aea290e1e0a26d1e74df6cff777eb9f038f1f8
Author: Michel Dänzer <email address hidden>
Date: Mon Jul 28 10:49:43 2008 +0200

    r300: Fix off-by-one error in calculation of scissor cliprect.

    Fixes http://bugs.freedesktop.org/show_bug.cgi?id=16123 .

[Olivier (olivier-lacroix)]

The issue has been resolved. See the kde bug report for details. Please apply the relevant patches to ubuntu packages.

[Harald Sitter (apachelogger)]

Moving bug to Mesa since it is not caused by KDE/KWin.

[Olivier (olivier-lacroix)]

As of today, the problem is gone. Great !