Successful triple head Xinerama configuration with nVidia 8400 GS and on-board intel.
Pat Kane
pekane52 at gmail.com
Wed Jan 26 05:57:12 PST 2011
Awesome experiment, thanks for the fun story.
Which nVidia driver are you using?
I've got an old Dell Vostro with an on-board Intel
that refuses to work when my nVidia card is in
the box.
Pat
----
On Wed, Jan 26, 2011 at 1:46 AM, Mihai Draghicioiu
<mihai.draghicioiu at gmail.com> wrote:
> Hi guys. It took me a few days to get it right, but i finally got it
> to work. I have a PCI-Express (Gigabyte?) nVidia 8400GS with a vga
> output and a DVI output. The way to get it and the on-board intel to
> work together was to set the on-board intel as primary graphics board
> from the BIOS Setup. I had also tried using a PCI nVidia board but I
> got some PCI/IRQ conflicts. I'm not sure what it was but i was unable
> to get that one to work. The next issue I had was getting the monitor
> connected to the DVI port to work. I tried a number of things, even
> switching it with the other monitor connected to the nVidia board, but
> no matter what I did, the DVI port wouldn't make the monitor turn on.
> It did detect that there is a monitor, and probably even its
> resolution and such, but the monitor wouldn't turn on. There was a DVI
> to VGA converter on that port, so I tried changing that, but it didn't
> fix it. So I fiddled with xorg.conf and just when I was about to give
> up, I placed these two lines in the Device section:
>
> Option "ConnectedMonitor" "CRT-0, CRT-1"
> Option "UseDisplayDevice" "CRT-0, CRT-1"
>
> And lo! The second monitor had started working.
>
> My next issue was with maximizing windows. Since I used TwinView on
> the two screens connected to the nVidia board, windows would maximize
> on both monitors, and since one of the monitors was smaller, there was
> a dead area, invisible to me, only visible in screenshots. So I
> decided to set it up as two separate screens. After some more
> miscellaneous issues (I need to mention that each of these steps took
> a few hours of fudging around), such as the cursor not showing up and
> others, I got the nVidia device to act as if there were two screens
> (This is explained in the nVidia README).
>
> My final issue was alignment. The screens are as such: two small LCD's
> with 1024x768 native resolution, and another LCD with 1280x1024 native
> resolution. The small monitors are placed to the left and right of the
> large monitor. The small monitors do not align at the top or bottom,
> rather their top edge is about two inches below the large monitor's
> top edge, and the lower edge is almost an inch above the large
> monitor's bottom edge. The grunt solution would have been placing the
> small monitors on stands, but I wanted to make the config work for me
> before I tried that.
>
> So now I had three X screens that I could configure any way I wanted
> in terms of position relative to each other. In order to have the
> correct position, the leftmost monitor needed to be offset from the
> top 192 pixels (origin at 0, 192). The large center monitor needed to
> be placed at 1024, 0, and the rightmost monitor needed to be at
> 1024+1280=2304, 192. I tried using "LeftOf", "RightOf" and "Relative"
> positioning, and the best I got this way was that the rightmost screen
> was aligned properly relative to the middle large monitor, but the
> leftmost monitor was still at the top edge:
>
> # Screen1 is leftmost screen
> # Screen0 is middle large screen
> # Screen2 is rightmost screen
> Section "ServerLayout"
> Identifier "X.org Configured"
> Screen 0 "Screen0" 0 0
> Screen 1 "Screen1" LeftOf "Screen0"
> Screen 2 "Screen2" Relative "Screen0" 2304 192
> InputDevice "Mouse0" "CorePointer"
> InputDevice "Keyboard0" "CoreKeyboard"
> EndSection
>
> I asked on the xorg irc channel and someone suggested:
>
> <Triskelios> vampi-the-frog: what if you make all of the positions absolute?
>
> So I tried that and sure nuff it worked great! I even noticed that
> glxgears can be held between the two nVidia monitors and still run
> well. If it's held between the nVidia and intel screen, the intel half
> is black. That's alright, I don't use 3D apps too much. Also I
> adjusted from 192 to 196 to get more precision in the alignment
> (though still not perfect).
>
> So here's my config:
>
> Pastebin: http://pastebin.com/Zd87UK9b
> Pastemail:
>
> Section "ServerLayout"
> Identifier "X.org Configured"
> Screen 0 "Screen0" 1024 0
> Screen 1 "Screen1" 0 196
> Screen 2 "Screen2" 2304 196
> InputDevice "Mouse0" "CorePointer"
> InputDevice "Keyboard0" "CoreKeyboard"
> EndSection
>
> Section "ServerFlags"
> Option "Xinerama" "True"
> EndSection
>
> Section "Files"
> ModulePath "/usr/lib/xorg/modules"
> FontPath "/usr/share/fonts/X11/misc"
> FontPath "/usr/share/fonts/X11/cyrillic"
> FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
> FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
> FontPath "/usr/share/fonts/X11/Type1"
> FontPath "/usr/share/fonts/X11/100dpi"
> FontPath "/usr/share/fonts/X11/75dpi"
> FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
> FontPath "built-ins"
> EndSection
>
> Section "Module"
> Load "glx"
> Load "extmod"
> Load "record"
> Load "dri2"
> Load "dbe"
> Load "dri"
> EndSection
>
> Section "InputDevice"
> Identifier "Keyboard0"
> Driver "kbd"
> EndSection
>
> Section "InputDevice"
> Identifier "Mouse0"
> Driver "mouse"
> Option "Protocol" "auto"
> Option "Device" "/dev/input/mice"
> Option "ZAxisMapping" "4 5 6 7"
> EndSection
>
> Section "Monitor"
> Identifier "Monitor0"
> VendorName "Monitor Vendor"
> ModelName "Monitor Model"
> EndSection
>
> Section "Monitor"
> Identifier "Monitor1"
> VendorName "Monitor Vendor"
> ModelName "Monitor Model"
> EndSection
>
> Section "Monitor"
> Identifier "Monitor2"
> VendorName "Monitor Vendor"
> ModelName "Monitor Model"
> EndSection
>
> Section "Device"
> Identifier "Card0"
> Driver "nvidia"
> VendorName "nVidia Corporation"
> BoardName "G86 [GeForce 8400 GS]"
> BusID "PCI:1:0:0"
> Screen 0
> Option "ConnectedMonitor" "CRT-0, CRT-1"
> Option "UseDisplayDevice" "CRT-0"
> EndSection
>
> Section "Device"
> Identifier "Card1"
> Driver "nvidia"
> VendorName "nVidia Corporation"
> BoardName "G86 [GeForce 8400 GS]"
> BusID "PCI:1:0:0"
> Screen 1
> Option "ConnectedMonitor" "CRT-0, CRT-1"
> Option "UseDisplayDevice" "CRT-1"
> EndSection
>
> Section "Device"
> ### Available Driver options are:-
> ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
> ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
> ### [arg]: arg optional
> #Option "AccelMethod" # [<str>]
> #Option "DRI" # [<bool>]
> #Option "ColorKey" # <i>
> #Option "VideoKey" # <i>
> #Option "FallbackDebug" # [<bool>]
> #Option "Tiling" # [<bool>]
> #Option "Shadow" # [<bool>]
> #Option "SwapbuffersWait" # [<bool>]
> #Option "XvMC" # [<bool>]
> #Option "XvPreferOverlay" # [<bool>]
> #Option "DebugFlushBatches" # [<bool>]
> #Option "DebugFlushCaches" # [<bool>]
> #Option "DebugWait" # [<bool>]
> Identifier "Card2"
> Driver "intel"
> VendorName "Intel Corporation"
> BoardName "4 Series Chipset Integrated Graphics Controller"
> BusID "PCI:0:2:0"
> EndSection
>
> Section "Screen"
> Identifier "Screen0"
> Device "Card0"
> Monitor "Monitor0"
> EndSection
>
> Section "Screen"
> Identifier "Screen1"
> Device "Card1"
> Monitor "Monitor1"
> EndSection
>
> Section "Screen"
> Identifier "Screen2"
> Device "Card2"
> Monitor "Monitor2"
> EndSection
>
> Hope this helps someone. Cheers!
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