Proper configuration for dual-headed nVidia 7800GT
Michal Varga
varga.michal at gmail.com
Wed Apr 1 21:29:47 PDT 2009
On Thu, Apr 2, 2009 at 12:56 AM, Kevin Oberman <oberman at 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.
More information about the freebsd-x11
mailing list