Fedora three monitor xorg.conf configuration

I found my old xorg.conf configuration file to have three monitors in Fedora Linux. I found if I used Nvidia's extra monitor configuration options, it would turn two monitors into one screen, instead of one screen for one monitor. The difference is when you maximize a window. Using Nvidia's, maximizing Firefox would spread the window over two monitors, which isn't what I wanted.

I discovered with my quad-head Quadro 400NVS I could use each chip on the card for a separate screen in Xinerama and put in a third card (in this case a GeForce 2 GTS) to make three screens for three monitors.

# Xorg configuration created by system-config-displaySection "ServerLayout" Identifier "Multihead layout" Screen "Screen0" LeftOf "Screen1" Screen "Screen1" Screen "Screen2" RightOf "Screen1" InputDevice "Mouse0" "CorePointer" InputDevice "Keyboard0" "CoreKeyboard" Option "Xinerama" "on" Option "Clone" "off" Option "StandbyTime" "20" Option "SuspendTime" "30" Option "OffTime" "40"EndSectionSection "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"EndSectionSection "Module" Load "dbe" Load "extmod" Load "v4l" Load "fbdevhw" Load "glx" Load "record" Load "freetype" Load "type1"# Load "dri"EndSectionSection "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"EndSectionSection "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "IMPS/2" Option "Device" "/dev/input/mice" Option "ZAxisMapping" "4 5" Option "Emulate3Buttons" "no"EndSectionSection "Monitor" Identifier "Monitor0" VendorName "Monitor Vendor" ModelName "Dell D1025TM" HorizSync 30.0 - 85.0 VertRefresh 50.0 - 100.0 Option "dpms"EndSectionSection "Monitor" Identifier "Monitor1" VendorName "Monitor Vendor" ModelName "ViewSonic VP181b-2" HorizSync 30.0 - 92.0 VertRefresh 50.0 - 85.0 Option "dpms"EndSectionSection "Monitor" Identifier "Monitor2" VendorName "Monitor Vendor" ModelName "Dell D1025TM" HorizSync 30.0 - 85.0 VertRefresh 50.0 - 120.0 Option "dpms"EndSectionSection "Device" Identifier "Videocard0" Driver "nvidia" VendorName "Videocard vendor" BoardName "NVIDIA Quadro 4 (generic)" BusID "PCI:3:0:0" VideoRam 32768EndSectionSection "Device" Identifier "Videocard1" Driver "nvidia" VendorName "Videocard Vendor" BoardName "NVIDIA Quadro 4 (generic)" BusID "PCI:3:4:0" VideoRam 32768EndSectionSection "Device" Identifier "Videocard2" Driver "nvidia" VendorName "Videocard Vendor" BoardName "NVIDIA Geforce2 GTS" BusID "PCI:1:5:0" VideoRam 65536EndSectionSection "Screen" Identifier "Screen0" Device "Videocard0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480" EndSubSectionEndSectionSection "Screen" Identifier "Screen1" Device "Videocard1" Monitor "Monitor1" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480" EndSubSectionEndSectionSection "Screen" Identifier "Screen2" Device "Videocard2" Monitor "Monitor2" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480" EndSubSectionEndSection#Section "DRI"# Group 0# Mode 0666#EndSection

» deekayen's blog

how to find busid?

Submitted by Anonymous (not verified) on Thu, 05/01/2008 - 2:53pm.

so, i guess i'm trying to do something similar on fedora 8...

agp nvidia 6600, dual-dvi
pci nvidia mx440, dvi+agp

i see that you have a dualhead quadro, and you're able to refer to each chip on your quadro with different busid's (right?)...

if i do a lspci, i only get one busid for each of my devices... how do i go about finding out the busid's of each chip on my 6600?

thanks,
ted

lspci is correct

Submitted by deekayen on Thu, 05/01/2008 - 6:42pm.

Your card will only have one bus id because it only has one chip. Nvidia is able to drive two monitors from one chip through twinview. The Quadro 440NVS I have is *quad* head, which means it has two chips on it, which is why I have two bus ids to refer to and why I can use Xinerama instead of twinview.

Ubuntu 8.04 was the first time ever I was able to get an auto configuration script to configure my nvidia card correctly and it even did so with a decent GUI. I did sudo apt get nvidia-settings and ran sudo nvidia-settings. This is the first time I'm saying it's worth giving a try.