[olug] Multiple video cards and X11...

[Jay Swackhamer]

Here's a working example xorg.conf from one of my machines with a  
dual-out ati card. Once you have all of the cards in, you can use  
xrandr to list whats available, and the names. You can then turn the  
other monitors on/off and use the information to build your config.

$xrandr --output DVI-0 --left-of VGA-0

$ xrandr
Screen 0: minimum 320 x 200, current 2560 x 1024, maximum 2560 x 1024
VGA-0 connected 1280x1024+0+0 (normal left inverted right x axis y  
axis) 338mm x 270mm
    1280x1024_60.00   60.0*+
    1280x1024      60.0     75.0     59.9
    1152x864       74.8
    1024x768       75.1     60.0
    800x600        75.0     60.3
    640x480        75.0     60.0
    720x400        70.1
DVI-0 connected 1280x1024+1280+0 (normal left inverted right x axis y  
axis) 338mm x 270mm
    1280x1024      60.0*+   75.0     59.9
    1152x864       74.8
    1024x768       75.1     60.0
    800x600        75.0     60.3
    640x480        75.0     60.0
    720x400        70.1


------------------------

Section "InputDevice"
         Identifier      "Generic Keyboard"
         Driver          "keyboard"
         Option          "CoreKeyboard"
         Option          "XkbRules"      "xorg"
         Option          "XkbModel"      "pc101"
         Option          "XkbLayout"     "us"
EndSection

Section "InputDevice"
         Identifier      "Configured Mouse"
         Driver          "mouse"
         Option          "CorePointer"
         Option          "Device"                "/dev/input/mice"
         Option          "Protocol"              "ImPS/2"
         Option          "Emulate3Buttons"       "true"
         Option          "ZAxisMapping"          "4 5"
EndSection

# external DVI with DisplaySize and preferred mode overriden
Section "Monitor"
         Identifier      "External DVI"
         Option          "RightOf" "VGA LCD"
EndSection

Section "Monitor"
         Identifier      "VGA LCD"
         DisplaySize     304 228
         Modeline "1280x1024_60.00"  108.88  1280 1360 1496 1712  1024  
1025 1028
1060  -HSync +Vsync
         Option "PreferredMode" "1280x1024_60.00"
EndSection

Section "Device"
         Identifier      "ATI Technologies, Inc. M22 [Radeon Mobility M300]"
         Driver          "ati"
         BusID           "PCI:1:5:0"
         Option          "AccelMethod"   "EXA"
         Option          "Monitor-VGA-0" "VGA LCD"
         Option          "Monitor-DVI-0" "External DVI"
EndSection

Section "Screen"
         Identifier      "Default Screen"
         Device          "ATI Technologies, Inc. M22 [Radeon Mobility M300]"
         DefaultDepth    24
         SubSection "Display"
                 Depth           24
                 # big virtual screen to place
                 Virtual         2560 1024
         EndSubSection
EndSection

Section "ServerLayout"
         Identifier      "Default Layout"
         Screen          "Default Screen"
         InputDevice     "Generic Keyboard"
         InputDevice     "Configured Mouse"
EndSection

-- 
Jay Swackhamer
Reboot The User
13416 A Street
Omaha, NE 68144
402-933-6449
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Quoting Dan Linder <dan at linder.org>:

> On Mon, Aug 25, 2008 at 5:14 PM, Adam Lassek <adam at doubleprime.net> wrote:
>> Dan, the nvidia driver is the same for all cards 5200 and newer, so you
>> should be able to add another nvidia card without changing your
>> configuration very much. I have not done it myself, though.
>
> Thanks for the feed-back - didn't know about the 5200 cutoff version
> (should'a used the release notes).  Anyway, when I finally get some
> spare time and money burning a hole in my pocket I'll have to buy the
> 6200 and try it.
>
> When I get around to playing with this I'll let everyone know my results.
>
> Dan
>
> --
> "Quis custodiet ipsos custodes?" (Who can watch the watchmen?) -- from
> the Satires of Juvenal
> "I do not fear computers, I fear the lack of them." -- Isaac Asimov (Author)
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