Guys in short words, Jaunty is screwed please downgrade to intrepid or use
another distro like Fedora 11 which is due release in a short time.

On Tue, May 5, 2009 at 2:15 AM, Chris Drost <email address hidden> wrote:

> > How can you say that you cannot narrow down the possible culprits?
>
> Because the .tar.gz of the qt4.5 source is 100 MB in size. If we had a
> crash report saying "there was a segmentation fault right here," we
> could maybe figure out where in that beast of a source code it was --
> but just asking "what line in the KDE 4.2 source is calling the wrong
> function in the Qt 4.5 source which is also misusing EXA when it
> repaints the screen" is a question that can't be answered without much
> more information than the problem itself provides.
>
> > So, waiting for an yet unstable alpha release is the solution?
>
> I'm not saying that you should jump on the Karmic alpha -- once people
> have solid Karmic-4.3 integration, there will almost surely be a .deb
> posted to the jaunty-backports repository.
>
> > How about proposing KDE 4.2 compiled against qt4.4 (shipped by
> default) and package qt4.5 as an alternative with a BIG FAT WARNING? I
> haven't seen anything preventing such a strategy on a release-update.
>
> You can get KDE 4.2 + Qt 4.4 + Kubuntu! However, you will have to use
> Intrepid to do it. As jaunty-backports will probably eventually contain
> KDE 4.3, so too the intrepid-backports repository contains, right now,
> KDE 4.2. And Intrepid has not been retrofitted to use Qt 4.5 -- 4.5 is
> strictly Jaunty and up.
>
> > According to this changelog this bug might have already been solved in
> qt.
>
> I don't see anything in that changelog to suggest a fix for anything
> EXA-specific, much less rendering artifacts. What line are you referring
> to, specifically? (I'm not really a Kubuntu dev, so don't take my word
> as gospel here. The Debian unstable repository (sid) contains a .deb for
> Qt 4.5.1, and ScottK on IRC says that the current plan is to merge this
> into Karmic, but keep it out of Jaunty. It might get backported later; I
> don't know.)
>
> > Which KDE bug are you referring to?
>
> I was referring to this comment (comment #21) by Aaron J. Seigo:
>
> https://bugs.kde.org/show_bug.cgi?id=187356#c21
>
> > Are you referring to the KDE 4.3 fix? What if the bug is really in Qt
> 4.5?
>
> I was referring to using UXA. (More specifically, since it looks like
> nobody has placed these instructions explicitly here, adding the line [
> Option    "AccelMethod"    "UXA"] to the "Device" section in
> /etc/X11/xorg.conf .) So far UXA has been working for me, but the
> problem was much less prevalent for me than it apparently is for you.
>
> >using a "better" version of Qt within Jaunty (perhaps using an optional
> repository?)
>
> Jaunty has already shipped with Qt 4.5, and my amateurish attempts to
> simulate a downgrade to Qt 4.4 with aptitude and the Intrepid
> repositories have not looked promising. I don't think anyone can provide
> you with a PPA (an optional repository) that would solve the multitude
> of dependencies. Everything (?) in Kubuntu Jaunty was built with the
> idea, "okay, we're releasing a Qt 4.5 operating system this April." Much
> of it breaks when you try to pull the tablecloth out from under it.
>
> If you want KDE 4.2 + Kubuntu, and you cannot enable UXA for some reason
> or another (or if UXA doesn't solve the problem), then it looks like
> your only option is Intrepid at the moment. Karmic may offer a backport
> of KDE 4.3 in a couple weeks if you're willing to wait.
>
> --
> (Needs UXA) painting artifacts after qt4.5 upgrade on intel chipset
> https://bugs.launchpad.net/bugs/338669
> You received this bug notification because you are a direct subscriber
> of the bug.
>



-- 
Regards
Jithin Emmanuel
http://spotm.in
Emo Philips <http://www.brainyquote.com/quotes/authors/e/emo_philips.html>
- "I got some new underwear the other day. Well, new to me."