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Old 11-30-10, 11:28 AM   #1
williammanda
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Default 8400GS overscan problem

I have two computers that run Ubuntu.
1st computer
Ubuntu 10.10 32 bit
8400GS
C2D 6400
Nvidia 260.19.06
LCD TV 42" 1920 x 1080
Problem - overscan

2nd computer
Ubuntu 10.04 64 bit
9600GT
C2Q 9300
Nvidia 195.36.24
LCD monitor 19" 1440 x 900
Problem - none

The 1st computer doesn't have the overscan compensation in the Nvidia server settings but the 2nd computer does but it doesn't have the overscan issue. I decided to swap video cards and the overscan compensation appears in both computers. This is ok and would be fine but I'm having a issue with with the 8400GS in the second computer. So I'm back with the original setup trying to correct the overscan issue in the 1st computer with the 8400 GS card. Can this overscan issue be corrected if I upgrade to the latest Nvidia driver? Please advise.
Thanks
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Old 11-30-10, 12:33 PM   #2
williammanda
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Default Re: 8400GS overscan problem

Well I upgraded to 260.19.21 and no change for the overscan compensation.
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Old 11-30-10, 03:30 PM   #3
williammanda
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Default Re: 8400GS overscan problem

Both computers have the latest version 260.19.21 and no change.
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Old 11-30-10, 03:41 PM   #4
Deanjo
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Default Re: 8400GS overscan problem

Most flat panel tv's have a aspect setting that allow 1:1 pixel mapping. Check your TV settings as "overscan" issues are not usually fixed at a driver level when a digital input is used (DVI or HDMI). It might help to post your TV make and model and the method of hookup (VGA/DVI/Composite/HDMI/Component).
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Old 11-30-10, 03:58 PM   #5
williammanda
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Default Re: 8400GS overscan problem

The LCD TV is an Emerson 42" model # LTDN42V68US. The TV is connected via HDMI / DVI cable to the video card. This is no adjustment for the HDMI connections on the TV. I have tried every possible setting on the TV setup to adjust for the overscan. The setup is very basic.
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Old 11-30-10, 06:45 PM   #6
Deanjo
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Default Re: 8400GS overscan problem

Quote:
Originally Posted by williammanda View Post
The LCD TV is an Emerson 42" model # LTDN42V68US. The TV is connected via HDMI / DVI cable to the video card. This is no adjustment for the HDMI connections on the TV. I have tried every possible setting on the TV setup to adjust for the overscan. The setup is very basic.

There should be a aspect ratio option called "Dot-by-Dot" on the HDMI 1 connection on that TV according to the manual. This is the mode you want to avoid overscan on the display.
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Old 11-30-10, 06:52 PM   #7
Deanjo
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Default Re: 8400GS overscan problem

BTW on a Samsung the picture format is "Just Scan" for anybody else that may want to know.
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Old 12-01-10, 08:37 AM   #8
williammanda
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Default Re: 8400GS overscan problem

Quote:
Originally Posted by Deanjo View Post
There should be a aspect ratio option called "Dot-by-Dot" on the HDMI 1 connection on that TV according to the manual. This is the mode you want to avoid overscan on the display.
I'm not sure which manual you are looking at but the one that comes with the TV is different than yours and the TV operates accordingly. On page 17:
Dot to Dot
Use the function to see the full image without any cutoff, when VGA signal is input
The manual I have says nothing about HDMI nor does the TV menu setup for HDMI.
As I stated before I have tried all available settings to adjust for the overscan. I still have to ask the question again....why doesn't the Nvidia server settings offer overscan compensation option?
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Old 12-01-10, 04:41 PM   #9
williammanda
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Default Re: 8400GS overscan problem

FYI
I managed to get the overscan compensation by chance. I was looking at just using the VGA method vs HDMI and decided to setup twinview using the VGA port and the HDMI input on the TV. Refer to the two screen shots: nvidia1 & 2. This approach doesn't seem right which leads me to believe that there is a bug. The overscan compensation should be there all the time not part of the time. A reply on this issue would be appreciated.
Thanks
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Old 12-02-10, 06:09 PM   #10
williammanda
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Default Re: 8400GS overscan problem

I updated to version 260.19.26 and still have the same result with the 8400GS card (no overscan compensation).
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Old 12-04-10, 09:28 PM   #11
williammanda
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Default Re: 8400GS overscan problem

Any updates?
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Old 12-07-10, 05:22 AM   #12
jpterj
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Default Re: 8400GS overscan problem

Quote:
Originally Posted by williammanda View Post
I'm not sure which manual you are looking at but the one that comes with the TV is different than yours and the TV operates accordingly. On page 17:
Dot to Dot
Use the function to see the full image without any cutoff, when VGA signal is input
The manual I have says nothing about HDMI nor does the TV menu setup for HDMI.
As I stated before I have tried all available settings to adjust for the overscan. I still have to ask the question again....why doesn't the Nvidia server settings offer overscan compensation option?
The Dot to Dot aspect seems to only be available for VGA input on this TV.
I would suggest you try the VGA connection and Dot to Dot aspect on the TV.
In my experience the digital to analog to digital conversion you get with VGA connection without overscan gives a better picture than downscaling then upscaling which is what you get with HDMI and overscan.
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