I found two different solutions with different approaches.
Shift your present XGL enabled session into a separate Window and launch a nonXGL window manager on the main Xsession. I found this approach funny, but works.
Create this script and copy it to ~/bin for single user only or /usr/bin for global access. Give it a name like noxgl(u can change this to your liking)
if [ "$1" = "-h" ] || [ "$1" = "--help" ] || [ $# -eq 0 ] ; then
echo "Usage : noxgl
echo " noxgl -b
echo " (-b option means 'border' so it adds a window border)"
if [ "$1" = "-b" ]; then
if [ -x /usr/bin/kwin ]; then
Now u can launch ur app as noxgl -b appname [options]
The second approach is to launch a nested Xserver using Xnest and launch ur app into the Xnest. You need to install Xnest for this.
Use the following commands:
Xnest -ac -terminate -geometry 1280x1024+0+0 :3 &
This will launch Xnest which is an Xserver as well as a Client.
Now launch ur app into this:
DISPLAY=:3 appname [options] &
A word of caution: By default Xnest will not allow Window borders, so it will be a hell to manage multiple windows(if your app uses them). So before launching ur app launch metacity using the above command and then launch ur app.