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List: kde-devel
Subject: Re: KDE4 and nvidia -> strange panel effects?
From: Tinti <vtintipo () gmail ! com>
Date: 2008-09-18 2:54:57
Message-ID: 1ba80b480809171954v4118c697xcc5bbb92ec612d06 () mail ! gmail ! com
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I have the same problem of Tomasz in Kubuntu Itrepid Ibex. My window become
blank
only with theb borders of some windows in GeForce FX 5200.
I want to send data of my hardware and drivers configuration 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 <aj@outkastsolutions.co.za>wrote:
> > Btw, Sebastian, you say that with beta drivers your KDE on 7600 flies.
> Just
> > wanted to ask whether "flies" == "much better than before" or "flies" ==
> > "as fast as kde3" ? Because I experience here the former relationship ;)
> 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
> drivers the window rendering issues disappeared, I could use compositing
> effects, I could actually use the scrollbar in the folderview... but kwin
> was
> chewing up 40% or more CPU in general use, and that number just kept
> growing
> 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
> window
> manager, with that, it's fast and usable, but of course I lose all the
> advanced kwin features. Some things like virtual desktops also don't work
> 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. So 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
> on a
> different desktop.
> These are not terrible problems, just minor inconveniences so for now this
> 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 that
> (compiz has always been excruciatingly unstable for me so I haven't been up
> to
> checking the latest versions yet).
> Basically, even with KWIN_NVIDIA_HACK=1, all the NVidia settings
> suggestions
> from techbase and the latest drivers you can use KDE4.1.1 on nvidia - if
> you
> 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
> almost everything to the GPU instead).
> This may very well still be NVidia bugs, or it may be something in kwin
> that
> 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
> means
> 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 down
> 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
> can
> tell me what it is. Just to make sure I'm clear, the CPU problem persists
> 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.
>
> >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to
> unsubscribe <<
>
--
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 like air conditioners -- they stop working properly if you
open WINDOWS"
"This is Linux land. In silent nights you can hear the Windows machines
rebooting."
Eng. Computação . Wiknowledge Helper
Kubuntu Intrepid Ibex @ 10 2008
"Here Goes Nothing"
"Amare 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."
[Attachment #5 (text/html)]
<div dir="ltr">I have the same problem of Tomasz in Kubuntu Itrepid Ibex. My window \
become blank<br>only with theb borders of some windows in GeForce FX 5200.<br><br>I \
want to send data of my hardware and drivers configuration for the developers <br> \
and also help. Is here a default app to do that?<br><br>Thanks <br><br>PS. Thats my \
first post I'm trying to participate!<br><br><div class="gmail_quote">On Sat, Sep \
13, 2008 at 5:40 AM, A.J. Venter <span dir="ltr"><<a \
href="mailto:aj@outkastsolutions.co.za">aj@outkastsolutions.co.za</a>></span> \
wrote:<br> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, \
204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="Ih2E3d">> \
Btw, Sebastian, you say that with beta drivers your KDE on 7600 flies. Just<br>
> wanted to ask whether "flies" == "much better than before" \
or "flies" ==<br> > "as fast as kde3" ? Because I experience \
here the former relationship ;)<br> </div>For me it is definitely the former case. On \
Bluewhite64-current (and probably<br> 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<br> effects, I could actually use the scrollbar in the \
folderview... but kwin was<br> chewing up 40% or more CPU in general use, and that \
number just kept growing<br> over time. This is on an AMD sempron 3200 with 1Gb of \
ram.<br> <br>
At this stage, I run kde4.1.1 on Bluewhite64-current using openbox as window<br>
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 work<br>
exactly the way KDE expects them too - virtualbox switches when you get to the<br>
edge of the screen - and in doing so doesn't play nice with xinerama. So if<br>
you were to right-click on the taskbar entry for a window on the right-hand<br>
screen and select move, when you go to drag it to this screen, it ends up on a<br>
different desktop.<br>
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<br>
successfully using compiz rather than virtualbox but I haven't tried that<br>
(compiz has always been excruciatingly unstable for me so I haven't been up \
to<br> checking the latest versions yet).<br>
Basically, even with KWIN_NVIDIA_HACK=1, all the NVidia settings suggestions<br>
from techbase and the latest drivers you can use KDE4.1.1 on nvidia - if you<br>
have enough CPU to waste. Kwin seems to do something that makes nvidia use a<br>
ton of normal CPU (which is odd, I would have expected it to be offloading<br>
almost everything to the GPU instead).<br>
This may very well still be NVidia bugs, or it may be something in kwin that<br>
should be handled differently.<br>
On various other systems without nvidia drivers however, kwin performs<br>
beautifully, I have even done kwin-effects using XRender on an FBDev driver and<br>
it worked okay (provided of course the CPU was quite powerful since that means<br>
doing effects with no GPU involvement whatsoever) - but kwin+nvidia remains<br>
just about the single worst performing setup you can get for KDE.<br>
<br>
I'm mostly giving this information in the hopes of helping to track down the<br>
problem - if it is with nvidia, it may help somebody know what to report to<br>
them, if there is a setting that will remove the problem, maybe somebody can<br>
tell me what it is. Just to make sure I'm clear, the CPU problem persists \
with<br> or without effects, effects in OpenGL mode with all the "fastest" \
options<br> selected doesn't seem to affect the CPU usage, so I believe they are \
in fact<br> rendered by the GPU.<br>
<br>
Ciao<br>
<font color="#888888">A.J.<br>
</font><div><div></div><div class="Wj3C7c"><br>
>> Visit <a href="http://mail.kde.org/mailman/listinfo/kde-devel#unsub" \
target="_blank">http://mail.kde.org/mailman/listinfo/kde-devel#unsub</a> to \
unsubscribe <<<br> </div></div></blockquote></div><br><br clear="all"><br>-- \
<br>tinti@linux:>whoami<br>Tinti :: CEFET padawan :: level 4/10<br>Kubuntu Hardy \
Heron 8.04 User - DRBL & LTSP User - L.A.M.P. user<br>"Computers are like \
air conditioners -- they stop working properly if you open WINDOWS"<br> \
"This is Linux land. In silent nights you can hear the Windows machines \
rebooting."<br><br>Eng. Computação . Wiknowledge Helper<br>Kubuntu Intrepid Ibex \
@ 10 2008<br><br>"Here Goes Nothing"<br>"Amare et sapere vix deo \
conceditur"<br> "Beware of bugs in the above code; I have only proved it \
correct, not tried it."<br>"Only those who attempt the absurd can achieve \
the impossible."<br> </div>
>> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to unsubscribe <<
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