[mythtv-users] Accuracy of HDTV processor requirements statement in HOWTO

[Jarod Wilson]

On Feb 09, 2006, at 19:40, Steven Adeff wrote:

> On 2/9/06, Jesse Guardiani <jesse at wingnet.net> wrote:
>> Len Reed wrote:
>>>> I'm pushing HD through a Duron 1.8 with a FX5200 (7676 w/ no  
>>>> XvMC).  This is a
>>>> frontend only and it comes close to pegging the cpu @1080i on  
>>>> some content.
>>>> Every now and then, I get "prebuffering pause" messages if the  
>>>> content gets
>>>> really busy.  I've currently got an issue with my XvMC install,  
>>>> once that is
>>>> resolved, I hope to have a few more free cpu cycles :)
>>>>
>>>> I was having sound problems during playback, but that got  
>>>> resolved during a
>>>> recent svn change (Daniel commited a change to help the cpu  
>>>> challenged).
>>>> Sound is on sync and crackle free.
>>>>
>>>
>>> What modeline are you using for these cards?  I've not been able  
>>> to get
>>> 1080i working.
>>>
>>
>> How does that work? Wouldn't you just use the VGA input whenever
>> possible and set the resolution
>> to the native pixel resolution of the TV? Why do you need a modeline?
>>
>
> because X requires a modeline

A more in depth explanation is that X is always using a modeline, but  
its often a built-in one, instead of a custom one. Custom modelines  
are necessary in many cases when outputting to a TV though, because  
many TVs provide broken EDID info (if any at all), so the "right"  
modeline can't be auto-detected.

I have to use a modeline for my DVI-connected 1920x1080p LCD HDTV,  
though that could be a case of there not being a functional 1080p  
modeline built in already. Without a modeline, I wind up with a FUGLY  
800x600 mode. :)


-- 
Jarod Wilson
jarod at wilsonet.com


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