I was trying to fix the `direct rendering: no` problem from earlier.  I think this is what fixed the problem:

1. Download the NVidia drivers from NVidia.
2. Modify the XGL startup file (`sudo gedit /usr/local/bin/startxgl.sh`):

   #!/bin/sh
   /usr/bin/Xgl :0 -fullscreen -ac -accel xv:fbo -accel glx:pbuffer &
   sleep 4  
   export DISPLAY=:0
   cookie="$(xauth -i nextract - :0 | cut -d ' ' -f 9)"
   xauth -i add :1 . "$cookie"
   exec /etc/X11/Xsession gnome-session

3. Modify the xorg.conf file (`sudo gedit /etc/X11/xorg.conf`):
1. Find `Section “Device”
2. Add `Option “AddARGBGLXVisuals” “True”`
3. Should read like

   Section "Device"
   Identifier   "NVidia GeForce 7600"
   Driver       "nvidia"
   Option "AddARGBGLXVisuals" "True"
   EndSection

4. Drop down to the terminal: [Ctrl] + [Alt] + [F1]
5. Stop the Xserver: `sudo /etc/init.d/gdm stop`
6. Run the NVidia drivers: `sudo /home//Desktop/NVidia+[Tab]`
7. Go through the installation
8. Restart the Xserver: `sudo /etc/init.d/gdm restart`
9. If it doesn’t automatically take you to the GNOME login, hit [Ctrl] + [Alt] + [F7]
10. Be sure to choose `Options (or F10) | Select Session | Xgl` before logging in.
11. You should be able to open a terminal window and run `glxinfo | grep direct` and it should return `direct rendering: yes`.
12. For fun, run `glxgears` and you should see smooth gear movement.
13. Now you can run `beryl-manager` (or `Applications | System Tools | Beryl Manager`)
14. Everything works!

Read on for what I had to do to get Beryl working.

First of all, here are the relevant components of my setup:

• Ubuntu 6.10 (Edgy)
• GeForce 7600 PCI-Express (256MB RAM)
• 20.1″ ViewSonic vx2025wm
• 2GB RAM

First off, there’s a great guide posted on the Beryl Project wiki. Follow those instructions as best you can.

A few things I had to do to get things working, though:

1. Get the latest Nvidia drivers: `sudo apt-get install nvidia-glx`.
2. Drop to the command line: [Ctrl]+[Alt]+[F1].
3. Enable the Nvidia drivers: `sudu nvidia-glx-config enable`.
4. Configure X: sudo dpkg-reconfigure xserver-xorg.
5. Go through all the questions on xserver configuration.
6. My monitor’s max resolution is 1680×1050@60Hz. I had to edit my Xserver configuration to respect that maximum refresh for that resolution.
   1. `sudo vi /etc/X11/xorg.conf`.
   2. Look for `Section “Screen”`.
   3. In each `SubSection “Display”`, change “1680×1050″ to “1680x1050_60″.
   4. Save the file.
7. Restart the GNOME display manage: `sudo /etc/init.d/gdm restart`.
8. You can now go back to the GDM: [Ctrl]+[Alt]+[F7].
9. Create a script to start XGL on login. Open a terminal window and enter: `gksudo gedit /usr/local/bin/startxgl.sh`
10. Put the following in the file and save it:

    #!/bin/sh
    
    /usr/bin/Xgl :1 -fullscreen -ac -br -accel xv:pbuffer -accel glx:pbuffer &
    
    sleep 4
    
    export DISPLAY=:1
    
    cookie="$(xauth -i nextract - :0 | cut -d ' ' -f 9)"
    
    xauth -i add :1 . "$cookie"
    
    exec /etc/X11/Xsession gnome-session

11. Now create the entry on login page:
    1. `sudo mkdir /etc/X11/sessions`
    2. `sudo gedit /etc/X11/sessions/xgl.dekstop`
    3. Paste this into the file:

       [Desktop Entry]
       
       Encoding=UTF-8
       
       Name=Xgl
       
       Exec=/usr/local/bin/startxgl.sh
       
       Icon=
       
       Type=Application

    4. Save the file.
12. Reboot
13. On startup, click Options then Sessions, and you should see “XGL” in the list. Use that session. Beryl should be working for you!
14. You should have a Beryl Manager application in your Applications / System Tools menu. Use that to start Beryl.