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Old 13th January 2009, 02:12 PM
sweetrain Offline
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Join Date: Feb 2005
Location: CANADA
Posts: 113
Dual-head, intel graphics card, compiz-fusion causing white screen.

I am not sure if there is the right board to ask this question. It might be a hardware related problem

My computer have an Intel graphics card, connected to two widescreen LCD panels. When the two monitors are working in a clone mode (i.e. automatically detected by the system), compiz-fusion works flawlessly.

The problem came when I managed to make dual head configuration work, following this TUT:

http://www.graphics-muse.org/wp/?p=314

Whenever, I enable compiz-fusion by typing
Code:
fusion-icon
Both screen go completely white, with keyboard and mouse still responding, by nothing else happen. I have to ctrl-alt-del, and then startx again.

After some researching, I found that:
Code:
fusion-icon -n
can get me started, but all the special effects are no longer available.

I knew there is a bug in Intel driver in F9 causing similar white screen, is this the same bug in F10 again?

Code:
fusion-icon -n
will output the following warning message:

Code:
 * Detected Session: unknown
 * Searching for installed applications...
 * No GLX_EXT_texture_from_pixmap with direct rendering context
 ... present with indirect rendering, exporting: LIBGL_ALWAYS_INDIRECT=1
 * Setting option Indirect Rendering to True
 * Using the GTK Interface
 * Decorator "" is invalid.
 * Setting decorator to Emerald ("emerald --replace")
 * Setting window manager to Metacity
Window manager warning: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://www.gnome.org/projects/gconf/ for information. (Details -  1: Failed to get connection to session: dbus-launch failed to autolaunch D-Bus session: Failed to waitpid() for babysitter intermediate process: No child processes
)
And my xorg.conf file is:
Code:
# Xorg configuration created by system-config-display

Section "ServerLayout"
	Identifier     "single head configuration"
	Screen      0  "Screen0" 0 0
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
	ModulePath "/usr/local/Xorg/lib/xorg/modules/"
	ModulePath "/usr/lib64/xorg/modules/"
	FontPath "catalogue:/etc/X11/fontpath.d"
	FontPath "built-ins"
EndSection

Section "InputDevice"
# keyboard added by rhpxl
	Identifier  "Keyboard0"
	Driver      "kbd"
	Option	    "XkbModel" "pc105+inet"
	Option	    "XkbLayout" "us"
EndSection


Section "Device"
	Identifier  "Videocard0"
	Driver      "intel"
        BusID       "PCI:00:2:0" 
	Option          "monitor-VGA" "vga"
        Option          "monitor-TMDS-1" "dvi"
EndSection

#Section "Device"
#	Identifier  "Videocard1"
#	Driver      "intel"
#        BusID       "PCI:00:2:0" 
#EndSection

Section "Monitor"
	Identifier   "vga"
	Option       "PreferredMode"   "1680x1050"
	Option       "Position" "0 0"
	Option	    "dpms"
EndSection

Section "Monitor"
	Identifier   "dvi"
	Option       "PreferredMode"   "1680x1050"
	Option       "RightOf" "vga"
	Option       "Enable" "true"
	Option	    "dpms"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Videocard0"
	Monitor    "vga"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth      24
		Virtual    3360 1050
	EndSubSection
EndSection
__________________
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Fedora 10/x86_64@
Intel Core 2 Quad Q6600
4G ram
320G sATA
----------------------
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card, causing, compizfusion, dualhead, graphics, intel, screen, white

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