This patch DOES NOT WORK with compiz 0.9.12.1 or later, as the underlying code that makes it work was removed. Getting this to work with current compiz would require finding all of the code it uses that was removed between 0.9.12.0 and 0.9.12.1 and adding it back along with the patch. This was more than I was able to do at the time, and yes, I did try. Due to this mess, I took the old patched 0.9.12.0 version, replaced the gtk directory with one from a post gtk3.16 version so it could build the window decorator with later versions of gtk3 and metacity. and stashed both the modded source and debian packages built from it on Archive at: https://archive.org/details/DebianPackagesForMate-desktopWityGtk3AndCustomPanelTheme Where I offer debs for mate built with gtk3 and two built versions of compiz: one for Ubuntu, and one for Debian with a forced restart to get the window decorator working. Getting anything newer to work will require either reverting the removal of that underlying code or else writing entirely new code to tell gtk 3.16 and later that compiz is in fact a compositor! The issue seems to be that gtk3.16 and later do not recognize Compiz as being a compositor and therefore default to not supporting composition with it. Compositio can be forced in the application code, so I included that in my mate theme support patches which went upstream for 1.12.0 and later. On 2/4/2016 at 1:16 AM, "Khurshid Alam"