Poor composting performance in KDE 4.3

[Thierry de Coulon]

On Thursday 15 October 2009, Dotan Cohen wrote:
> The wife's desktop is running KDE 4.3 on a fairly decent homebuilt
> machine: 2 gHz dual-core processor, 2 GB RAM, ATI graphics:
> $ lspci | grep ati
> 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8
> [Athlon64/Opteron] HyperTransport Technology Configuration
> 01:05.0 VGA compatible controller: ATI Technologies Inc Radeon HD 3200
> Graphics
>
> The composting effects are terribly slow, and many effects (Wobby
> Windows, Cover Switch) refuse to start. I have tried googling KDE4
> composting problems, but all I find are complaints and no solutions.
> Where can I start troubleshooting? The distro is Kubuntu 9.04, same as
> I run on my daily driver laptop with inferior hardware and no
> problems.
>
> Thanks in advance for any ideas.

I think you are looking at the wrong place. I'd bet this is not a KDE 4 
problem, but an ATI problem.

Support for the AMD/ATI Radeon HD 3200 seems to be poor at best, I found many 
reports of problems with this card.

I tend to avoid ATI card...

Thierry

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