compiz fails with Xgl not present error....

[Michael Fothergill <mikef20000@hotmail.com>]

Dear Debianists,

I installed my 8500GT nvidia card successfully on my amd64 sempron box running Debian Lenny:

spc1-burn4-0-0-cust452:/etc/X11# glxinfo |grep rendering
direct rendering: Yes

I followed the advice kindly provided by Hans Ullrich in a recent post and after modifying the xorg.conf file I installed compiz using apt-get install compiz and ran compiz --replace & instead of trying to use the session startup method.

The result was an "Xgl not present error".  I looked around on google to see what this error means but I didn't get much clue. 

Is there a debian Xgl package I need to install for example?

Your comments are appreciated.

I included a copy of my xorg.conf after this output.

Regards

Michael Fothergill 
	
spc1-burn4-0-0-cust452:/etc/X11# compiz --replace &
[1] 4093
spc1-burn4-0-0-cust452:/etc/X11# Checking for Xgl: not present. 
Detected PCI ID for VGA: 
Checking for texture_from_pixmap: present. 
Checking for non power of two support: present. 
Checking for Composite extension: present. 
Comparing resolution (1024x768) to maximum 3D texture size (8192): Passed.
Checking for nVidia: present. 
No nvidia-settings program available to determine VideoRam.Checking for FBConfig: present. 
Checking for Xgl: not present. 
Starting gtk-window-decorator
/usr/bin/compiz.real (core) - Warn: SmcOpenConnection failed: Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed


spc1-burn4-0-0-cust452:/etc/X11# more xorg.conf
# xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "Files"
EndSection

Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"kbd"
	Option		"CoreKeyboard"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"pc105"
	Option		"XkbLayout"	"gb"
EndSection

Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
	Option		"CorePointer"
	Option		"Device"		"/dev/input/mice"
	Option		"Protocol"		"ImPS/2"
	Option		"Emulate3Buttons"	"true"
EndSection

Section "Device"
	Identifier	"nVidia Corporation GeForce 8500 GT"
	Option		"AllowGLXWithComposite"	    "true"
	Option		"RenderAccel"		    "true"
	Driver		"nvidia"
	BusID		"PCI:2:0:0"
EndSection

Section "Monitor"
	Identifier	"Generic Monitor"
	Option		"DPMS"
	HorizSync	30-60
	VertRefresh	55-75
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Option		"XAANoOffscreenPixmaps"	"true"
	Option		"AddARGBGLXVisuals"	"true"
	Device		"nVidia Corporation GeForce 8500 GT"
	Monitor		"Generic Monitor"
	DefaultDepth	24
	SubSection "Display"
	Modes		"1280x768"
	EndSubSection
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
	Option		"AIGLX"	 "on"
	Screen		"Default Screen"
	InputDevice	"Generic Keyboard"
	InputDevice	"Configured Mouse"
EndSection

Section	"Extensions"
	Option		"Composite"	"Enable"
EndSection
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