Too wide of a screen

[Ray Parrish]

On 01/18/2011 02:00 PM, Doug wrote:
> On 01/18/2011 04:34 PM, Ray Parrish wrote:
>> On 01/17/2011 01:21 PM, Ric Moore wrote:
>>> On Mon, 2011-01-17 at 07:57 -0800, Ray Parrish 
>>> wrote:
>>>> Hello,
>>>>
>>>> I have just completed upgrading from 8.04 to 
>>>> 10.04
>>>> and now I have a few problems.
>>>>
>>>> This first problem is that with my resolution 
>>>> set
>>>> to 1024x768 as I normally have it, the screen is
>>>> too wide and runs off the left side. My
>>>> applications menu on the top tool bar is almost
>>>> completely out of sight as it runs off the 
>>>> screen
>>>> on the left side.
>>>
> /snip/
>> OK, I tried that, and there was no change. I'm 
>> wondering if nvidia's driver thinks that I am 
>> running a different sized monitor than the 15 
>> inch TFT LCD Jetway I have?
>>
>> The nvidia settings dialog reports my screen 
>> size as being 313 x 232 millimeters, which I 
>> have no way of measuring to verify as I have no 
>> metric rules to use.
>>
>> It also reports a resolution of 83 x 84 dots 
>> per inch, which I am not sure of either.
>>
>> Is there any way to change the size reported 
>> above to see if the screen shrinks down to the 
>> correct size?
>>
>> I know from previous experience that this 
>> monitor does not correctly report it's data. I 
>> used some of the tools I found in Ubuntu to 
>> query the monitor's information, and it always 
>> told me that the monitor was not returning the 
>> information.
>>
>> Later, Ray Parrish
>>
> To convert from millimeters to inches, divide by 
> 25.4.  Doing this says the screen is just over 
> 15" diagonal, which is what you say you have.
> The conversion also shows that the resolution is 
> ~ 1020 x 760, which is realistic for a small 
> screen in 4 x 3 proportion, which is what the
> screen proportion calculates to--the older 
> (better) screen proportion.  It sounds like you 
> have a driver problem--maybe the wrong one, or 
> maybe you are sending it the wrong information.  
> If there are any manual setup abilities, now is 
> the time to utilize them.
>
> --doug
>
Thank you for providing the conversion factor for 
mm to inches, and doing the calculations you did.

I know how to edit the xorg.conf file, but to my 
eye it looks pretty much the way it did in the 
older version of Ubuntu, and I can not spot any 
errors in the settings that are in it so far.

The modelines have some numbers that I do not 
understand, here is an example -

     ModeLine       "1024x768 at 60" 65.0 1024 1048 
1184 1344 768 771 777 806 -hsync -vsync

I'm not sure why that line lists so many numbers 
in addition to the 1024, and the 768. Are all of 
them alternate heights, and widths for the screen?

I see nothing in the current xorg.conf file which 
could alter the pixel count to make the screen go 
too wide, or anything that would make the pixel 
size be calculated incorrectly, so I am at a loss 
to explain why the visual area of the desktop is 
wider than the display area of my monitor.

Later, Ray Parrish

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