<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/4.0.2"> </HEAD> <BODY> Perhaps Rui has got an idea: <A HREF="http://sourceforge.net/mailarchive/forum.php?thread_name=1322249141.3009.55.camel%40debian&forum_name=qtractor-devel">http://sourceforge.net/mailarchive/forum.php?thread_name=1322249141.3009.55.camel%40debian&forum_name=qtractor-devel</A> What driver do you use for the ATI graphics? Does it use/share main RAM for framebuffer? I still suspect your post is about the graphics ;)?! Quiet now! Ralf </BODY> </HTML>