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Re: Translucency in KDE too slow (Composite)



[KS] wrote:
Hello all,

I was trying to enable translucency(in KDE) on my debian unstable box.
After editing the xorg.conf for using the composite extension, I
restarted X and it worked. However, I was a bit dismayed with the
performance. It is so slow that I can actually "see" that KDE is trying
to redraw a window. Are there any specific settings that I need to
adjust to get a better performance?

My system is a PIV 2.0GHz based machine with 256+512MB RAM and a Nvidia
Geforce 5700LE (256MB vRAM), KDE is 3.5.2.

ii  libxcomposite1   6.9.0.dfsg.1-6   X off-screen compositing library
ii  libxdamage1      6.9.0.dfsg.1-6   X region 'damage' library

You need the proprietary nvidia driver (version 1.0-8xxx), then you can
activate the following two options in the device section of your
graphics card:

Option     "AllowGLXWithComposite" "true"
Option     "RenderAccel"   "true"

I just checked the nvidia website and it seems that there was a new
version of the driver (1.0-8756) released yesterday which enables these
options by default. AFAIK you have to set them yourself with older drivers.

If it works it will make all translucency/compositing effects much
faster; if it does not work it can lock up your computer. (Normally you
can still log in via ssh and kill X, or you can use "at" to make sure X
will get killed after five minutes when you try it for the first time.)

Regards,
           Florian



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