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Old 12-07-05, 10:53 PM   #1
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Join Date: Dec 2005
Posts: 3
Lightbulb Using DVI on Nvidia 6150 in Linux

This is a fix for using the DVI output on the ASUS A8N-VM CSM motherboard (Nvida 6150) with the Nvidia driver version 1.0-8174 for Linux FC4-x86_64. From the look of some of the other threads i've seen on this forum, it may have broader application.

The specific problem seems to be that the Nvidia driver by default disables the DVI output when X loads, and there is no way i've found to explicitly tell it to use DVI as the primary interface. The VESA driver has no such problem, so i assume it is a driver issue, not a BIOS probelm.

Below are my hardware configuration and my xorg.conf. The key seems to be enabling TwinView to get the driver to turn on the DVI output, and setting TwinViewOrientation to "Clone" to produce the same output on the DVI as on the VGA. Interestingly, TwinView Clone mode does not appear in the --advanced-help for nvidia-xconfig, so it may need to be done manually.

Note on screen resolution: Since this configuration relies on TwinView being enabled, i think the available modes are set by the option "MetaModes" instead of the Modes line in the Display Subsection.

Hardware Configuration:
Motherboard: ASUS A8N-VM CSM
Chipset: Nvidia 6150 / 430
Graphics: Nvidia 6150 integrated
Monitor: ViewSonic VP201s connected to integrated DVI-D
CPU: Athlon64 3200+ (Rev. E)
Linux: Fedora Core 4 (FC4-x86_64)
Video Driver: Nvidia 1.0-8174

xorg.conf (Section "InputDevice" omitted):
Section "ServerLayout"
Identifier "single head configuration"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"

Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
FontPath "unix/:7100"

Section "Module"
Load "dbe"
Load "extmod"
Load "fbdevhw"
Load "glx"
Load "record"
Load "freetype"
Load "type1"
# Load "dri"

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "ViewSonic VP201s"
HorizSync 30.0 - 95.0
VertRefresh 50.0 - 85.0
Option "dpms"

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "Nvidia"
BoardName "Nforce 6150"

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "True"
Option "TwinViewOrientation" "Clone"
Option "UseEdidFreqs" "True"
Option "MetaModes" "1600x1200, 1600x1200"
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1600x1200" "1400x1050" "1280x960" "1280x800" "1280x1024" "1152x864" "1152x768" "1024x768" "800x600" "640x480"

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Old 12-08-05, 03:14 AM   #2
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Posts: 711
Default Re: Using DVI on Nvidia 6150 in Linux

Option "ConnectedMonitor" "DFP-0"

to your device section
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Old 12-08-05, 01:44 PM   #3
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Posts: 3
Default Re: Using DVI on Nvidia 6150 in Linux

Yes, i tried that fix first after seeing it on this thread http://www.nvnews.net/vbulletin/show...t=57791&page=7 but then the X on FC4 would only run in 8-bit color mode even though it was set to 24-bit in xorg.conf.

The TwinView Clone mode seems to work better for me, as now X recognizes all the available resolutions / color depths for my monitor, and allows me to run 1600x1200 24-bit.

Thanks for the input
- ed
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