Underscan with S-Video - AVS Forum
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post #1 of 3 Old 12-17-2007, 07:06 PM - Thread Starter
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Hi - I just got a Mac Mini and have used the apple DVI to S-Video adapter to hook it up to my TV. I either have a problem with underscan or I check the overscan button in 10.5 and have an overscan problem (duh).

I read the tutorial about SwitchResX on that one page here in AVS forums (thread 751713 - sorry, AVS it won't let me post a hyperlinks because I'm new).

but when I click on Export DDC I get

Code:
DDC block report generated by SwitchResX for display
NTSC/PAL

      0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
-----------------------------------------------------
0  | 00 FF FF FF FF FF FF 00 06 10 08 9D 01 01 01 01
1  | 07 0C 01 03 10 00 00 96 30 67 A9 A0 56 47 99 26
2  | 11 48 4C 00 00 61 01 01 01 01 01 01 01 01 01 01
3  | 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
4  | 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
5  | 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
6  | 01 01 01 01 01 01 01 01 01 01 01 01 00 00 00 FC
7  | 00 4E 54 53 43 2F 50 41 4C 0A 20 20 20 20 00 38

-----------------------------------------------------
        Valid DDC block: checksum passed

EDID Version........1.3
Manufacturer........APP
Product Code........2205 (089D) (9D08) 
Serial Number.......16843009

Manufactured........Week 7 of year 2002
Max H Size..........0 cm
Max V Size..........0 cm
Gamma...............2.50

DPMS Supported Features:
------------------------ 
Active off  

Display type:
------------- 
Non RGB color display


Input signal & sync:
-------------------- 
Analog input with:      0.700V / 0.300V
        Blank to black setup


Color info:
------------ 
Red x = 0.626  Green x = 0.278  Blue x = 0.150  White x = 0.283
Red y = 0.338  Green y = 0.601  Blue y = 0.068  White y = 0.298

Established Timings:
-------------------- 

Manufacturer Reserved Timings:
------------------------------ 
                Unknown timing 7
                Unknown timing 2
                Unknown timing 1

Standard Timing Identification:
------------------------------- 

Monitor Description blocks:
--------------------------- 
        Descriptor #0 is Empty descriptor

        Descriptor #1 is Empty descriptor

        Descriptor #2 is Empty descriptor

        Descriptor #3 is Monitor name:
                        NTSC/PAL
Which doesn't seem to match the tutorial - Descriptior doesn't have any information in it. Any ideas on what I am doing wrong? It isn't a big deal, I hope to get a HDTV in the next few months if I can get HD off the air. But it would be nice to get this working properly.

Speaking of new TVs is there a guide that tells me what TVs work well with Macs so I don't have this problem again when I do go looking for a new TV?

Thanks!
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post #2 of 3 Old 12-18-2007, 02:26 AM
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Quote:
Originally Posted by dtmetz View Post

Speaking of new TVs is there a guide that tells me what TVs work well with Macs so I don't have this problem again when I do go looking for a new TV?

Take a look in the stickies at the top of this page.
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post #3 of 3 Old 12-19-2007, 08:48 AM
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The EDID data you have posted comes from a ROM embedded in the Apple adapter, not from your TV. When the adapter is plugged into a Mac, it tells the Mac that a standard TV is attached and preconfigures certain timings and options within OS X accordingly.

Yes, your TV will have overscan if it is an old CRT tube type of TV. If you really want to try and get rid of it, there is a good tutorial that can be found on the developer's website for DisplayConfigX.
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