[mythtv-users] Vertical scaling in HD shows - FIXED!

[DaveD]

That did it!  I added the following to the Monitor section of xorg.conf:
    DisplaySize  487 304

Thanks!

DaveD.

Michael T. Dean wrote:
> On 03/31/2008 07:44 AM, Doug Larrick wrote:
>   
>> DaveD wrote:
>>     
>>>   dimensions:    1920x1200 pixels (524x321 millimeters)
>>>       
>> I think this is your problem.  MythTV computes the screen aspect ratio
>> from the display size (524x321 mm).  In your case this is somewhere
>> between 16:9 (which would be ~524x295 mm) and 16:10 (which would be
>> ~524x328 mm)  It is probably snapping the display's aspect ratio to 16:9
>> instead of 16:10.  Inserting a "DisplaySize" directive in your xorg.conf
>> in the appropriate location (Google is your friend) should fix it up.
>>     
>
> See:
> http://www.mythtv.org/wiki/index.php/Display_Size
> http://www.mythtv.org/wiki/index.php/Specifying_DPI_for_NVIDIA_Cards
>
> And, if you (or anyone else) would like to do a good deed for the
> community, you could update those pages and:
>
> http://www.mythtv.org/wiki/index.php/Frequently_Asked_Questions#All_my_fonts_look_like_they_are_the_wrong_sizes.2C_how_can_I_correct_this.3F
>
> for 0.21 to get rid of all mention of the requirement for 100x100DPI and
> instead specify that the only requirement is that the display be
> configured with the appropriate aspect ratio as determined by the
> physical measurement of the screen.  Therefore, the DisplaySize or DPI
> can be adjusted as desired so that fonts appear at a size that's
> readable.  (I.e. though many would claim my using 100x100DPI on my 67"
> HDTV, which actually has a 33x33DPI, is wrong, I would argue that anyone
> who configures X to use 33x33DPI is wrong as an 8pt font would be only
> 3.67pixels high, 10pt is 4.583, 12pt is 5.5, etc.--all of which are
> unreadable, and since many apps use these font sizes by default...)
>
> For the DisplaySize, it's as simple as choosing any 2 values that are
> multiples of the aspect ratio (i.e. for 16:9, you could use "16 9", "32
> 18", "128 72", "160 90", "320 180", "480 270", or whatever--even, to get
> good font sizes, using the values in the table of DisplaySizes that give
> 100x100DPI with square pixels).
>
> For the DPI setting that NVIDIA allows, it's more difficult as the user
> would have to do the math to determine what values to use.  Therefore,
> it's more appropriate to use DisplaySize (which means that DPI must
> /not/ be specified) for 0.21 and above.  However, you can mention that
> for a display with square pixels (i.e. whose pixel aspect ratio equals
> the screen's physical aspect ratio), simply choosing the same DPI value
> for X and Y will work--e.g. 100x100DPI, 80x80DPI, 133x133DPI, or whatever.
>
> You may want to explicitly mention that choosing to use a DisplaySize
> that results in a DPI near 100 will likely make fonts in all apps (even
> xterms, etc.) readable even with the 10-foot user interface.
>
> Mike
>
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