Hi

I'm using KDE 4.6 (Qt 4.7.1) on Arch Linux 64bit.
After an update to the xf86-video-ati-6.14.0 driver I get a lot of image disturbances on the desktop, on some apps (in all KDE SC apps, in firefox just a few icons in history and bookmarks) and webpages (like dict.leo.org). I tested it with and without KDE composite.

I tried to clean the cache in /var/tmp/kdecache-*/kpc and in ~/.kde4/cache-xsix/kpc/ but this doesn't help.

Are the other caches to clean or has someone similar problems with this dirver? Any help is welcome.

Image disturbances:



My PC config:
AMD X6, Radeon HD5830, dual head installation
Xorg.0.log
.xsessions-errors
xorg.conf

I'm running the same video driver, but different card (r300) and the 32bit version of Archlinux.

I have these artefacts too, but only in Firefox and only when running in 16bit colour mode.

I have found a workaround, but unfortunately that created other problems.
You may try to disable EXAPixmaps and/or RenderAccel in the Device section of xorg.conf.
It has solved my problem with Firefox, but created other problems (some parts of the screen or window didn't update on time).

Thanks multimedia
Set EXAPixmaps to Off and "clean" the entire ~/.kde4 (kpc only wasn't enough), /var/tmp/kdecache-*/ and the image disturbance are gone

Code: Select all

Section "Device"
   # ...
   Option "EXAPixmaps" "Off"
EndSection


And about 1GB of video RAM is gone too for off screen image rendering
But new image disturbance occur when I move some KDE SC Apps (like Kate) on the screen or scrolling fast in Firefox (moving firefox on the screen doesn't end up in image disturbance). Last but not least the KDE desktop is slowed down.

Maybe I had to ask the upstream driver developers (because the problem doesn't exist with the older driver) or are there other settings in KDE I can switch on off to locate the error?