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Old 11-19-2009, 07:12 PM   #1
MadSkillzMan
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Registered: Jul 2004
Distribution: SuSE, Mandrake
Posts: 142

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Cannot for the life of me get dual monitors working!


Ok guys. I know, hot topic..ive searched..i've followed the Xinerama tutorial..but no go

I'm guessing just something isn't loading in general or what

My Dual G5's psu blew up this weekend, and i refuse to go back to windows, so until i can come up with the $$$ for a new PSU i installed Fedora 10 on an old Dell GX270.

Now, ive got 3 video cards to play with. An Nvidia Geforce4MX, an ancient matrox PCI, and the onboard intel VGA out.

Mind you, ALL of these cards work just fine on their own. All of these will work dual and even tripple monitors in XP. But i hate XP.

Now when following th xinerama tutorial, i took bits and peices from the XORG.conf files of each card to make my own..and ALL I GET on boot is "No Screens Found" so i have to remove matrox card (If plugged in) and reconfigure the X server. otherwise if i dont remove the card i get a blank screen.

Now heres the config Fedora gave me for the working NVidia card (singlehead mind you)

Code:
# Xorg configuration created by system-config-display

Section "ServerLayout"
	Identifier     "single head configuration"
	Screen      0  "Screen0" 0 0
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

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

Section "Device"
	Identifier  "Videocard0"
	Driver      "nv"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Videocard0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1280x960" "1152x864" "1024x768" "800x600" "640x480"
	EndSubSection
EndSection
Now heres the one i came up with for the AGP and Matrox PCI Card:

Code:
# Xorg configuration created by system-config-display

Section "ServerLayout"
	Identifier     "Default Layout"
	Screen      0  "Main Screen"
	Screen      1   "Second Screen" LeftOf "Main Screen"
	InputDevice    "Keyboard0" "CoreKeyboard"
	Option "Xinerama" "true"
EndSection

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

Section "Device"
	Identifier  "Videocard0"
	Driver      "nv"
	BusID	"PCI:01:00.0"
	Screen 0
	Option	"DDCMode" "True"
EndSection

Section "Device"
	Identifier  "Videocard1"
	Driver      "mga"
	BusID "PCI:01:08.0"
	Screen 1
	Option	"DDCMode" "True"
EndSection

Section "Screen"
	Identifier "Main Screen"
	Device     "Videocard0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1400x1050" "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
	EndSubSection
EndSection

Section "Screen"
	Identifier "Second Screen"
	Device     "Videocard1"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection

Whats interesting is, is when i run the grep command to get the PCI id, it only shows the one card. Same when i run system-config-display, it will only detect one card/one monitor. So that leads me to beleive i have to force Fedora SOMEWHERE before it reads Xorg to detect more than one VGA card.
So right now as i type, i'm running the Nvidia, and the Intel...but the intel is just blank. i checked the log file on Xorg, but see NO intel/Matrox anywhere in the file, which makes me wonder if the system is even seeing it.

Any insight guys? id really appreciate it. I do NOT want to go back to windows...and actually when i get my mac back, i think i'll keep this linux machien chugging on the 2nd LCD channels, just because its been so pleasant to deal with.
 
Old 11-19-2009, 08:33 PM   #2
jhwilliams
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Registered: Apr 2007
Location: Portland, OR
Distribution: Debian, Android, LFS
Posts: 1,168

Rep: Reputation: 208Reputation: 208Reputation: 208
This looks similar to something I tried in like 2004. Check out this thread: http://www.linuxforums.org/forum/lin...onf-issue.html

Last edited by jhwilliams; 11-19-2009 at 08:34 PM.
 
Old 11-19-2009, 08:38 PM   #3
GrapefruiTgirl
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Registered: Dec 2006
Location: underground
Distribution: Slackware64
Posts: 7,594

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Even though I'm using Slackware, AND even though I've not done much that involves mixing different types of cards with Xinerama, you might find this thread to be a helpful reference: http://www.linuxquestions.org/questi...ight=xorg.conf

I posted it a while back in the hopes that more folks would put some working xorg.conf files there too, but that hasn't happened. Even so, there are several of my own files there, which I have used with various combinations of 2, 3, and maybe the 4 monitors, with Xinerama.

Currently I'm running two monitors, as I simply don't have the space for any more, but when we eventually get a new flat-screen TV I'll be switching back to one of the 3-monitor setups, to drive the TV for watching movies and stuff.

Hope you find something useful over there

Sasha
 
  


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