Hi,
Did you reproduce recently this problem with compiz refusing to replace another window manager (KDE here)?
This is in my case: $ compiz --replace GLX_EXT_texture_from_pixmap is available with direct rendering./usr/bin/gtk-window-decorator: Could not acquire decoration manager selection on screen 0 display ":0.0" /usr/bin/compiz.real: decoration: property ignored because version is 20061011 and decoration plugin version is 20070319 /usr/bin/compiz.real: decoration: property ignored because version is 20061011 and decoration plugin version is 20070319 /usr/bin/compiz.real: decoration: property ignored because version is 20061011 and decoration plugin version is 20070319
/usr/bin/compiz.real: Failed to load slide: freedesktop Beryl is working fine on the same setup. -- Radu Spineanu