Arch Linux

walp

Member

Registered: 2010-08-23

Posts: 23

High CPU usage on X

I use KDE 4.5 and a NVidia card (8400M G) with the official driver.

Sometimes I get high CPU usage on X (around 50% usage) when using the computer, particularly when viewing PDF with Okular making the scroll a bit sluggish. Is this normal behaviour?

My system is up to date.

lagagnon

Member

From: an Island in the Pacific...

Registered: 2009-12-10

Posts: 1,087

Website

Re: High CPU usage on X

Depends on the PDF file. I have seen some PDF files react like that. Do you have all the fancy eye candy of KDE turned on also? If so try reducing the eye candy crap and see what happens.

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Philosophy is looking for a black cat in a dark room. Metaphysics is looking for a black cat in a dark room that isn't there. Religion is looking for a black cat in a dark room that isn't there and shouting "I found it!". Science is looking for a black cat in a dark room with a flashlight.

karol

Archivist

Registered: 2009-05-06

Posts: 25,440

Re: High CPU usage on X

Try viewing that pdf outside KDE, try the nouveau drivers - this way you can (hopefully) nail down what the problem is. Cairo, poppler, pango - are you using the stock packages or some AUR/modified ones?