Desktop effects slow

[Guest]

So, im running the new Kubuntu. I've had no problems until now, my Desktop effects(any of them) Just my CPU usage by about 30-40% each time i activate one. So far here are my settings

Compositing Type: OpenGL
Disable Functionality Checks = True
OpenGL mode : Texture from Pixmap
Texture Filter: Nearest
Direct Rendering, Vsync = False
Smooth Scaling = False

I mean, I have a pretty good computer here.
Sony Vaio : VGN-FW480J
When i had windows 7 installed, it could play Battlefield Badcompany 2 on almost all high graphics.

Sidenote: I also have the ATI Driver installed.

[oblivion]

Re: Desktop effects slow

I have an ATI card (X1K series) and had the same experience on KK LL LTS, sometimes even the effects and compositing were disabled altogether. So, the problem you experience might be due to the kernel mode settings used by plymouth. There is a workaround for this.

run konsole fist.

then open grub file.

kdesudo kate /etc/default/grub

then, add below line to the file

radeon.modeset=0

When finished, update grup using this command:

sudo update-grub

It might also work for you. But BEWARE: this will result in an ugly bootscreen. There is a workaround for that too. But unfortunately I don't remember the steps to be taken. So try to google it.

Regards