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Massive X cpu usage


Chris H
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2009, KDE4.

 

My laptop has always had instances where X freezes, ever since switching from kernel 2.4. This shows itself in the graphical system being unresponsive for a second or two, maybe happening every couple of minutes.

 

Since upgrading from 2008/kde3.10 I have noticed this occurring but also sending any audio and video into a 'judder' as well. Also playing a dvd for the first time it was unwatchable as this interruption became more frequent, like every 6 or 7 seconds.

 

Opening a terminal and using top it appears that when I'm playing audio or a dvd then X uses about 60% cpu and plasma uses about 30% :o

 

Having no extra processes with the system 'at rest' then x uses about 3% ( what I'd expect ) with plasma flipping from below 1% to about 15%.

 

There would seem to be an errata regarding this here but looking through the xorg.0.log file I don't see what would appear to be the tell-tale evidence to suggest this is the issue.

 

I'm not able to tinker with the linux-nonfb boot until later tonight but was wondering if anyone had some insight into this before I go fiddling?

 

Ta.

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