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Old 06-19-2009, 10:40 AM   #1
rmwlaw
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RESOLUTION - nVidia 9600GT, Samsung LCD & Onkyo Receiver


I have the equipment specified above, with HDMI cable going from nVidia 9600GT video card hdmi output port to hdmi input port #4 on an Onkyo Receiver (Sony BluRay to hdmi input port #1, Motorola Cable Box to hdmi input port #3) then from hdmi output port to hdmi input port #1 of my Samsung SN4696LN 46" LCD TV (sorry if I have the model number somewhat inaccurate, not at home).

I am using Ubuntu 9.04 32-bit at the moment, and fixed the lack of audio by updating alsa to 1.0.20.

Now, remaining problem is that video screen is larger than the television screen. I believe that might be what is termed overscanning, not sure. The LCD television is approximately 3 years old. Nvidia Monitor Utility finds the Onkyo Receiver as the Display/Monitor (do not recall at the moment the term used by the utility), and does not reference the Samsung TV.

Note that I am able to resize the screen resolution in MS Win XP with Nvidia Control Panel to 1808 x 1004 at 60hz, and everything fits perfectly on the screen. That resolution however is not available with the linux Nvidia Monitor Utility. In Win it also lists the Onkyo Receiver as the Display/Monitor. In both Win and Linux, if I hook video card directly to TV, it reflects Samsung 1920x1080 as Display/Monitor (but screen resolution is still messed up).

Have searched and searched online for a solution, but am stuck. Hoping if I provide my xorg.conf it might help others figure this out. Here's the file content from xorg.conf:

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 1.0 (buildmeister@builder63) Wed May 27 03:15:36 PDT 2009

Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection

Last edited by rmwlaw; 06-20-2009 at 11:57 AM. Reason: Make post more likely to receive response.
 
Old 06-20-2009, 05:13 PM   #2
GrapefruiTgirl
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Code:
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
option "modes" "1808x1004"
SubSection "Display"
Depth 24
EndSubSection
EndSection
Maybe adding a modes line as I show above, will produce the desired output? And I think you can also add an @60 to that line, inside the quotes, but probably you won't need it, hopefully.

It does look like a weird (nonstandard) mode so you may want also to look at using a 'modeline generator' to create custom modelines. Sorry, I had a link to a good one but I can't find it; Google will help you look.

Sasha

Last edited by GrapefruiTgirl; 06-20-2009 at 05:15 PM.
 
Old 06-20-2009, 08:09 PM   #3
rmwlaw
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Little further research, need a little more help.

GrapefruiTgirl:

In WinXP, going to Control Panel, Display, and Settings, the Color Quality is listed as "32". Do you know whether this correlates to a Depth 32 for xorg.conf? If so, should I add a second Depth for 32?

Btw - came across an online modeline generator, and downloaded the file, xtiming-3.3.0.tar. Is that the application you were thinking of? Also, have you used gtf?

Have the manual for my LCD television, and it includes a chart for IBM and VESA for windows. Does not include linux listings or non-vesa drivers. Should I use those settings in a non-VESA environment? Using NVIDIA-Linux-x86-185.18.14-pkg1.run.
 
Old 06-20-2009, 08:26 PM   #4
GrapefruiTgirl
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AFAIK, using 24bpp color in Linux is equivalent to the 32bpp setting in WinXP. I don't think trying 32bpp in Linux will get you anywhere, but by all means if it does something different, you can correct me on this.

As for modeline generators, they are typically web-based, as in websites where you enter in the resolution you want, hit GO, and it returns a modeline for you. I have never actually downloaded software for the purpose; seems like overkill to me.

VESA settings will (or ideally *should* always work), on ALL hardware that is VESA compliant, which is just about any video hardware that is not ancient. Your 9600GT is definitely VESA compliant. I can't really speak to the capabilities of your other video appliances, as I don't have any of them; but the settings in the VESA area of the manuals you have, will apply regardless what sort of computer or OS you are using.

Hope this helps,

Sasha
 
Old 06-20-2009, 08:26 PM   #5
GrapefruiTgirl
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deleted dupe post.

Last edited by GrapefruiTgirl; 06-20-2009 at 08:28 PM. Reason: my post posted in duplicate.
 
Old 06-21-2009, 08:24 AM   #6
rmwlaw
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GrapefruiTgirl (others feel free to chiime in if you know the answers to any or all of the following):

Do you know whether it make any difference to my usage of the VESA settings listed in TV's manual for WinXP in light of the fact that:

(1) I am using the HDMI output port from the video card with sound via SPDIF passthrough, and not the VGA or DVI output ports on the video card?

(2) I am not using the stock video driver from WinXP?

(3) I am not using the stock driver that comes in Ubuntu, but rather NVIDIA-Linux-x86-185.18.14-pkg1.run (or if I use a 64 bit version with Ubuntu 9.04 amd64?

Hope to get a chance to experiment with xorg.conf this afternoon, family time aside on father's day. I look forward to your input on these questions.

rmwlaw
 
  


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