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List:       kde-devel
Subject:    Re: Problem with KDE3.5 and Audacity
From:       Lubos Lunak <l.lunak () suse ! cz>
Date:       2005-11-28 12:58:24
Message-ID: 200511281358.24191.l.lunak () suse ! cz
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On Monday 28 November 2005 06:15, Pavel Troller wrote:
> Hi!
>   Thanks for KDE3.5! I've successfully compiled it yesterday and it really
> ROCKZ!!!
>   However, I wanted to use it for my everyday's life and I was a bit
> disappointed because I've discovered a big problem.
>   It is very strange. I'm using Audacity to grab audio track from
> cassettes/ vinyls etc. and making wavs/mp3s from them. The problem is that
> when I start audacity in KDE 3.5 and then switch desktops forth and back
> (which is my standard behaviour, I'm using 12 desktops very intensively :-)
> ), the system becomes very unresponsive and CPU load goes to very high
> values. Running top discovers that X server eats almost all the CPU cycles.
> Even a dual machine with 2x Athlon MP 1800+ cannot handle this and the
> recording becomes unusable because of buffer overruns.

 Hmm ... how can one X process hog two CPUs?

>   This CPU overload terminates only by quitting Audacity. After that, all
> returns to normal. Switching to text console also temporarily frees the CPU
> but switching back to X restores the overload condition.
>   I was doing this work regularly under KDE 3.4.x and I've never
> encountered such a problem.
>   Could it be some interaction of kwin with audacity ? Did something change
> in kwin from 3.4 days ?

 Not that much.

>   Any help would be greatly appreciated. I don't have any idea how to
> discover more about the problem.

 You could try running it with another window manager in KDE, or running it in 
GNOME.

-- 
Lubos Lunak
KDE developer
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