From kde-devel  Sun Jul 13 17:40:32 2008
From: Pierre <pinaraf () pinaraf ! info>
Date: Sun, 13 Jul 2008 17:40:32 +0000
To: kde-devel
Subject: Re: KDE4 and the nvidia driver
Message-Id: <200807131940.33262.pinaraf () pinaraf ! info>
X-MARC-Message: https://marc.info/?l=kde-devel&m=121597092304669

On Sunday 13 July 2008 19:21:32 Thomas Holzmann wrote:
> Pierre schrieb:
> > On Saturday 12 July 2008 23:51:14 Michael Leupold wrote:
> >> Hi there,
> >>
> >> so far I've been reluctant to use KDE4 as my main desktop because the
> >> performance was pretty sloppy due to my nvidia 8600 GTS. Fortunately
> >> I've stumbled on some instructions on how to improve performance using
> >> those cards [1]:
> >> 1) Install the latest nvidia beta driver (currently 177.13)
> >> 2) Set the following options:
> >> $ nvidia-settings -a InitialPixmapPlacement=2 -a GlyphCache=1
> >>
> >> (Hint: some users reported it worked with InitialPixmapPlacement=1 for
> >> them)
> >>
> >> This worked really well for me (plasma really responsive), so I thought
> >> I'd share it.
> >
> > It does improve the performance a bit for me (GeForce 8600M GT), but
> > that's far from making the system usable.
> > I often have some small X freezes, where nothing answers for a few
> > seconds...
> >
> >> To make kwin work well with those new settings I had to adjust
> >> Settings->Desktop->D. Effects / Advanced Options to:
> >> - Compositing type: OpenGL
> >> - OpenGL mode: Shared Memory
> >
> > Well, this works if you're lucky enough to be able to enable desktop
> > effects ! Often, X freezes for at least 10 seconds when I enable them.
> > That's enough for the "timeout" and KWin decides to disable effects
> > then...
>
> I've also the GeForce 8600M GT, I've installed the newest driver and
> have applied your other proposed tweaks but unfortunately that did not
> lead to much better performance.
>
> Maybe a little bit better, but not much...
>
> BTW: Does anybody know if nvidia will release drivers in the near future
> that work well with my card? If not, I could send my notebook back to
> dell...
On nvnews, a nVidia developer explained they were looking at the non-
accelerated operations that are the source of the problems in KDE4, but they 
don't give any release date...


 
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