I have the same problem of Tomasz in Kubuntu Itrepid Ibex.= My window become blank
only with theb borders of some windows in GeForc= e FX 5200.

I want to send data of my hardware and drivers configurat= ion for the developers
and also help. Is here a default app to do that?

Thanks

PS. = Thats my first post I'm trying to participate!

On Sat, Sep 13, 2008 at 5:40 AM, A.J. Venter &l= t;aj@outkastsolutions.co.za> wrote:

> Btw, Sebastian, you say that with beta drivers your KDE on 7600 f= lies. Just
> wanted to ask whether "flies" =3D=3D "much better than = before" or "flies" =3D=3D
> "as fast as kde3" ? Because I experience here the former rel= ationship ;)

For me it is definitely the former case. On Bluewhite64-current (and = probably
on plain slackware too) it used to be entirely unusable. With the new beta<= br> drivers the window rendering issues disappeared, I could use compositing effects, I could actually use the scrollbar in the folderview... but kwin w= as
chewing up 40% or more CPU in general use, and that number just kept growin= g
over time. This is on an AMD sempron 3200 with 1Gb of ram.

At this stage, I run kde4.1.1 on Bluewhite64-current using openbox as windo= w
manager, with that, it's fast and usable, but of course I lose all the<= br> advanced kwin features. Some things like virtual desktops also don't wo= rk
exactly the way KDE expects them too - virtualbox switches when you get to = the
edge of the screen - and in doing so doesn't play nice with xinerama. S= o if
you were to right-click on the taskbar entry for a window on the right-hand=
screen and select move, when you go to drag it to this screen, it ends up o= n a
different desktop.
These are not terrible problems, just minor inconveniences so for now this<= br> works better for me than kwin. I have also heard that some people are using= it
successfully using compiz rather than virtualbox but I haven't tried th= at
(compiz has always been excruciatingly unstable for me so I haven't bee= n up to
checking the latest versions yet).
Basically, even with KWIN_NVIDIA_HACK=3D1, all the NVidia settings suggesti= ons
from techbase and the latest drivers you can use KDE4.1.1 on nvidia - if yo= u
have enough CPU to waste. Kwin seems to do something that makes nvidia use = a
ton of normal CPU (which is odd, I would have expected it to be offloading<= br> almost everything to the GPU instead).
This may very well still be NVidia bugs, or it may be something in kwin tha= t
should be handled differently.
On various other systems without nvidia drivers however, kwin performs
beautifully, I have even done kwin-effects using XRender on an FBDev driver= and
it worked okay (provided of course the CPU was quite powerful since that me= ans
doing effects with no GPU involvement whatsoever) - but kwin+nvidia remains=
just about the single worst performing setup you can get for KDE.

I'm mostly giving this information in the hopes of helping to track dow= n the
problem - if it is with nvidia, it may help somebody know what to report to=
them, if there is a setting that will remove the problem, maybe somebody ca= n
tell me what it is. Just to make sure I'm clear, the CPU problem persis= ts with
or without effects, effects in OpenGL mode with all the "fastest"= options
selected doesn't seem to affect the CPU usage, so I believe they are in= fact
rendered by the GPU.

Ciao
A.J.

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--
tinti@linux= :>whoami
Tinti :: CEFET padawan :: level 4/10
Kubuntu Hardy Heron = 8.04 User - DRBL & LTSP User - L.A.M.P. user
"Computers are lik= e air conditioners -- they stop working properly if you open WINDOWS"<= br> "This is Linux land. In silent nights you can hear the Windows machine= s rebooting."

Eng. Computa=E7=E3o . Wiknowledge Helper
Kubun= tu Intrepid Ibex @ 10 2008

"Here Goes Nothing"
"Am= are et sapere vix deo conceditur"
"Beware of bugs in the above code; I have only proved it correct, not = tried it."
"Only those who attempt the absurd can achieve the = impossible."