Hi,

I'm encountering a problem with very high cpu usage from xorg (40-60% just moving a window) and KWin (10-20% moving a window). My setup is:
Hardware: Laptop with P7450 CPU (Core2Duo 2.13ghz), 4Gb RAM
Software: Windows 7 x64 host, running Opensuse 11.3 KDE (4.4.4) as a guest inside a Virtualbox (3.2.10)

I've tried just about everything I can find on the matter, including:
Making sure every package is up-to-date
Compiling latest kernel (2.6.36)
Recompiling VBox guest additions
Checking kernel tick (100hz)
Increasing vmalloc to 192mb
Disabling desktop effects
Closing all applets in system tray
Disabling compositing with shift-alt-f12
Forcing update of xorg packages

But none have had a noticeable impact. I still get an extremely laggy OS, where if I drag a simple dialog about, I get 20 copies of it on the desktop before it refreshes, and XOrg jumps from 1% to 40-60% CPU, and usually kwin to 10-15%, and plasma-desktop to 5-10%.

Any help or pointers on the issue would be massively appreciated, thanks.

EDIT: I noticed that if I remove the Pager widget, the slow refresh of dialogs when moved is fixed, however the CPU usage is still high.

Have you installed the VirtualBox Guest Additions in openSUSE 11.3?

Thanks for the reply.
I believe so, I installed them and they didnt fail. The auto-resizing and mouse integration is working, but I'm not sure how you can tell if the VBox graphics driver is working properly?

It should be working then. Are Desktop Effects enabled in the virtual machine? Open System Settings > Desktop Effects to find out.