Dual Monitor Problem / Bug with Fedora Core 3

Analog Kid sid.dev at gmail.com
Mon Jan 17 21:24:53 UTC 2005


Hi,

   I have a laptop and have Fedora Core 3 installed on it. Through the
VGA port at the back of my laptop I have my display connected to an
external monitor.

  I configured my /etc/X11/xorg.conf file to allow Dual Monitor Set-Up
(That is, my laptop LCD screen and my external monitor will "behave"
like ONE LONG/BIG monitor). The xorg.conf file is attached with this
email (also cut-and-pasted at the end of this email). I am able to
have various applications open in the two displays and everything
works great as if I had one big monitor!

 However, there is a BUG! When I minimize an application (say the
mozilla browser) from the Laptop screen (i.e. my primary display)
everything works fine! That is, the minimized window goes and sits on
the  "task bar" (i.e. the GNOME panel). Now, I can click on the
minimized window in the GNOME panel (i.e. "task bar") and it pops back
right up for me to continue using the application (i.e. Mozilla in
this case). HOWEVER, when I minimize an application window from the
SECONDARY DISPLAY (i.e. my external monitor), the application window
JUST DISAPPEARS (i.e. I can no longer find it sitting on the task bar
as a minimized window). Hence, if I minimize any application from the
secondary display, I LOSE the application. That is, if I minimize
Mozilla while browsing the net in the secondary display (i.e. my
external monitor), the window just disappears and I cannot find it
anywhere!!!!

 Can someone help me fix this bug/problem?

Thanks,
Sid
-- 
Siddharth Devarajan
Graduate Student
ECSE Department,
Rensselaer Polytechnic Institute, NY.

xorg.conf file:
#--------------------------
#--------------------------

# Xorg configuration created by system-config-display

Section "ServerLayout"
	Identifier     "Multihead layout"
	Screen      0  "Screen0" LeftOf "Screen1"
	Screen      1  "Screen1" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
	InputDevice    "Synaptics" "AlwaysCore"
	Option	    "Xinerama" "on"
	Option	    "Clone" "off"
EndSection

Section "Files"

# RgbPath is the location of the RGB database.  Note, this is the name of the 
# file minus the extension (like ".txt" or ".db").  There is normally
# no need to change the default.
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Red Hat 6.0 and later now use a font server independent of
# the X server to render fonts.
	RgbPath      "/usr/X11R6/lib/X11/rgb"
	FontPath     "unix/:7100"
EndSection

Section "Module"
	Load  "dbe"
	Load  "extmod"
	Load  "fbdevhw"
	Load  "glx"
	Load  "record"
	Load  "freetype"
	Load  "type1"
	Load  "synaptics"
	Load  "dri"
EndSection

Section "InputDevice"

# Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
#	Option	"Xleds"		"1 2 3"
# To disable the XKEYBOARD extension, uncomment XkbDisable.
#	Option	"XkbDisable"
# To customise the XKB settings to suit your keyboard, modify the
# lines below (which are the defaults).  For example, for a non-U.S.
# keyboard, you will probably want to use:
#	Option	"XkbModel"	"pc102"
# If you have a US Microsoft Natural keyboard, you can use:
#	Option	"XkbModel"	"microsoft"
#
# Then to change the language, change the Layout setting.
# For example, a german layout can be obtained with:
#	Option	"XkbLayout"	"de"
# or:
#	Option	"XkbLayout"	"de"
#	Option	"XkbVariant"	"nodeadkeys"
#
# If you'd like to switch the positions of your capslock and
# control keys, use:
#	Option	"XkbOptions"	"ctrl:swapcaps"
# Or if you just want both to be control, use:
#	Option	"XkbOptions"	"ctrl:nocaps"
#
	Identifier  "Keyboard0"
	Driver      "kbd"
	Option	    "XkbModel" "pc105"
	Option	    "XkbLayout" "us"
EndSection

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "IMPS/2"
	Option	    "Device" "/dev/input/mice"
	Option	    "ZAxisMapping" "4 5"
	Option	    "Emulate3Buttons" "yes"
EndSection

Section "InputDevice"
	Identifier  "Synaptics"
	Driver      "synaptics"
	Option	    "Device" "/dev/input/mice"
	Option	    "Protocol" "auto-dev"
	Option	    "Emulate3Buttons" "yes"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Unknown monitor"
	HorizSync    31.5 - 37.9
	VertRefresh  50.0 - 70.0
	Option	    "dpms"
EndSection

Section "Monitor"
	Identifier   "Monitor1"
	VendorName   "Monitor Vendor"
	ModelName    "Unknown monitor"
	HorizSync    31.5 - 37.9
	VertRefresh  50.0 - 70.0
	Option	    "dpms"
EndSection

Section "Device"
	Identifier  "Videocard0"
	Driver      "radeon"
	VendorName  "Videocard vendor"
	BoardName   "ATI Radeon Mobility 7500"
EndSection

Section "Device"
	Identifier  "Videocard1"
	Driver      "radeon"
	VendorName  "Videocard Vendor"
	BoardName   "ATI Radeon Mobility 7500"
	BusID       "PCI:1:0:0"
	Screen      1
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Videocard0"
	Monitor    "Monitor0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     16
		Modes    "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1024x768"
	EndSubSection
EndSection

Section "Screen"
	Identifier "Screen1"
	Device     "Videocard1"
	Monitor    "Monitor1"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1024x768"
	EndSubSection
EndSection

Section "DRI"
	Group        0
	Mode         0666
EndSection
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