[ubuntu-x] Xserver-XGL

Daniel techknow at internalkernel.com
Tue Sep 29 05:13:59 BST 2009


I'm hoping someone can help me... I have three monitors and Xinerama 
enabled. From what I've read Xserver-XGL is the only way to get 
compositing effects, i.e. compiz, going with Xinerama enabled. I like 
Xinerama since it's one big desktop, and I also like compiz. :)

My goal is to get my cake... and eat it too.

I grabbed the xserver-xgl package out of the hardy repos... installed it 
on my jaunty box. I can get it to launch as an overlay on display :1, 
but am having a horrible time getting it to properly launch with GDM.

This is what I've done so far... if someone can point me in the right 
direction that would be fantastic. I have a script in 
/usr/bin/startxgl.sh, which contains

Xgl -fullscreen :0.0 -ac -accel glx:pbuffer -accel xv:fbo -br&
sleep 1
export DISPLAY=:0.0
exec dbus-launch --exit-with-session gnome-session

I then created /usr/share/xsessions/xgl.desktop which pointed towards 
the above script, selected that from GDM when I logged in.

And... it's not working... I'll be honest I really have no idea what I'm 
doing. :) Although when I launch the Xgl command above while logged in, 
I launch it to display :1 of course - it works fine. Well, it launches 
as root and it appears as an overlay... not ideal but functional.

If someone can point me in the proper direction, it would be much 

Also, since I'm on the subject... Why was xserver-xgl dropped from 
ubuntu after hardy? It seems to be the only method of getting one big 
desktop (Xinerama) across multiple GPUs.

Thanks for the time,

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