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António Albuquerque


On Fri, Dec 19, 2008 at 11:33, Launchpad Bug Tracker <
<email address hidden>> wrote:

> You have been subscribed to a public bug:
>
> Binary package hint: kubuntu-kde4-desktop
>
> I'm running KDE 4.1 from the ppa listed at kubuntu.org, but I've had
> this issue ever since the first 4.0 betas. This is on a Hardy machine.
>
> Whenever a new object is drawn, such as the application menu or any
> application whatsoever, the space in which it will be drawn is first
> allocated with video garbage. After a brief delay - perhaps 200ms - the
> garbage is properly replaced with the real object contents. It looks as
> if it's displaying "old" video memory, if that makes sense. It is
> hard/impossible to get a proper screenshot depicting this.
>
> Restoring a minimized Firefox is a surefire way of reproducing it; every
> other time it will be video garbage, every other time it will just be a
> black box. And again, application menu, right-click menus, titlebar
> menus; *anything* KDE4 draws. After having once spawned the object, the
> next time it will draw "garbagelessly", with some exceptions (such as
> Firefox, for some reason).
>
> I've tried and gotten this on two machines running Intel integrated
> graphics (with the xserver-xorg-video-intel driver), and one with the
> proprietary Nvidia driver; both exhibit the same behavior. I've had some
> other people confirming it at the Ubuntu forums, too. Please see:
>
> http://ubuntuforums.org/showthread.php?t=788023&highlight=drawn+time&p=5009121
> and the following few replies.
>
> Enabling or disabling Desktop Effects doesn't seem to make any
> difference, and I've tried enabling random video options in xorg.conf
> but I can't say I've had much luck. For instance, on this intel machine:
>
>        Option          "XAANoOffscreenPixmaps" "true"
>        Option          "InitialPixmapPlacement" "2"
>        Option          "DRI" "true"
>        Option          "AccelMethod" "EXA"
>        Option          "ExaNoComposite" "false"
>        Option          "MigrationHeuristic" "greedy"
>        Option          "BackingStore" "true"
>        Option          "PageFlip" "true"
>        Option          "TripleBuffering" "true"
>
> Again, even with a vanilla xorg.conf with no explicit video options
> defined, the behavior persists.
>
> Some other info:
>
>        $ apt-cache policy kdebase-bin-kde4 kde-window-manager
>        kdebase-bin-kde4:
>          Installed: 4:4.1.0-0ubuntu1~hardy1~ppa2
>          Candidate: 4:4.1.0-0ubuntu1~hardy1~ppa2
>          Version table:
>         *** 4:4.1.0-0ubuntu1~hardy1~ppa2 0
>                500 http://ppa.launchpad.net hardy/main Packages
>                100 /var/lib/dpkg/status
>             4:4.0.5-0ubuntu1~hardy1 0
>                500 http://se.archive.ubuntu.com hardy-backports/main
> Packages
>             4:4.0.3-0ubuntu2 0
>                500 http://se.archive.ubuntu.com hardy/universe Packages
>        kde-window-manager:
>          Installed: 4:4.1.0-0ubuntu1~hardy1~ppa2
>          Candidate: 4:4.1.0-0ubuntu1~hardy1~ppa2
>          Version table:
>         *** 4:4.1.0-0ubuntu1~hardy1~ppa2 0
>                500 http://ppa.launchpad.net hardy/main Packages
>                100 /var/lib/dpkg/status
>
> ** Affects: xorg (Ubuntu)
>     Importance: Undecided
>         Status: Confirmed
>
> --
> [KDE4] momentary video garbage upon drawing new objects
> https://bugs.launchpad.net/bugs/254468
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>