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Date:      Thu, 2 Apr 2009 05:56:34 +0200
From:      Michal Varga <varga.michal@gmail.com>
To:        Kevin Oberman <oberman@es.net>
Cc:        x11@freebsd.org
Subject:   Re: Proper configuration for dual-headed nVidia 7800GT
Message-ID:  <3f1fd1ea0904012056pd083583k8786f6813c404b6@mail.gmail.com>
In-Reply-To: <20090401225645.8004F1CC0B@ptavv.es.net>
References:  <20090401225645.8004F1CC0B@ptavv.es.net>

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On Thu, Apr 2, 2009 at 12:56 AM, Kevin Oberman <oberman@es.net> wrote:
> I have been unable to get both heads of my nVidia 7800GT to work. I
> start with the output of 'Xorg --configure' and add the second Monitor
> and a display set for a 2560x1024 display. I get the proper display on
> one monitor and the other just displays "Cannot Display This Video
> Mode".
>[...]
>
You didn't mention what kind of drivers do you use, but you can use
TwinView for official nvidia-driver (don't know about nv and nouveau,
never used them in this role).

Few examples from my 7600GT config (see commented values too):

Section "Monitor"
  Identifier    "Default Monitor"
  ModelName     "Default"
  Option        "DPMS"
  # Standard GTF timings (man gtf):
  Modeline      "1280x1024_100" 190.96  1280 1376 1520 1760  1024 1025
1028 1085  -HSync +Vsync
  Modeline      "1280x1024_85"  159.36  1280 1376 1512 1744  1024 1025
1028 1075  -HSync +Vsync
  Modeline      "1024x768_120"  139.05  1024 1104 1216 1408  768 769
772 823  -HSync +Vsync
  Modeline      "1024x768_100"  113.31  1024 1096 1208 1392  768 769
772 814  -HSync +Vsync
  Modeline      "800x600_120"   83.95    800  856  944 1088  600 601
604 643  -HSync +Vsync
  Modeline      "800x600_100"   68.18    800  848  936 1072  600 601
604 636  -HSync +Vsync
  Modeline      "640x480_120"   55.43    640  672  880  912  480 487
497 505  -HSync +Vsync
  Modeline      "640x480_100"   43.99    640  672  832  864  480 488
496 505  -HSync +Vsync
EndSection

Section "Device"
  Screen        0
  Identifier    "Nvidia"
  Driver        "nvidia"
  Option        "DPMS"
  Option        "Coolbits"              "1"
#  Option       "RenderAccel"           "True"
#  Option       "AddARGBGLXVisuals"     "True"
#  Option       "UseEdidDpi"            "False"
  Option        "UseEdidFreqs"          "True"
  Option        "DPI"                   "96 x 96"
  Option        "TwinView"              "Yes"
#  Option        "ConnectedMonitors"     "DFP, DFP"
  Option        "ConnectedMonitors"     "CRT, CRT"
#  Option        "TwinViewOrientation"  "CRT-0 LeftOf CRT-1"
  Option        "TwinViewOrientation"   "Clone"
  Option        "HorizSync"             "CRT-1: 30-130; CRT-0: 30-98"
  Option        "VertRefresh"           "CRT-1: 48-170; CRT-0: 50-160"
  Option        "MetaModes"             "1280x1024_85, 1280x1024_85;
1280x1024_85, NULL; 1024x768_100, 1024x768_100; 1024_768_100, NULL;
800x600_100, 800x600_120; 800x600_100, NULL; 640x480_100, 640x480_120;
640x480_100, NULL;"
#  Option       "MetaModes"             "NULL, 1280x1024_85; NULL,
1024x768_100; NULL, 800x600_100; NULL, 640x480_100;"
EndSection

m.



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